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Wolfenden L, McCrabb S, Barnes C, O'Brien KM, Ng KW, Nathan NK, Sutherland R, Hodder RK, Tzelepis F, Nolan E, Williams CM, Yoong SL. Strategies for enhancing the implementation of school-based policies or practices targeting diet, physical activity, obesity, tobacco or alcohol use. Cochrane Database Syst Rev 2022; 8:CD011677. [PMID: 36036664 PMCID: PMC9422950 DOI: 10.1002/14651858.cd011677.pub3] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
BACKGROUND Several school-based interventions are effective in improving child diet and physical activity, and preventing excessive weight gain, and tobacco or harmful alcohol use. However, schools are frequently unsuccessful in implementing such evidence-based interventions. OBJECTIVES 1. To evaluate the benefits and harms of strategies aiming to improve school implementation of interventions to address student diet, physical activity, tobacco or alcohol use, and obesity. 2. To evaluate the benefits and harms of strategies to improve intervention implementation on measures of student diet, physical activity, obesity, tobacco use or alcohol use; describe their cost or cost-effectiveness; and any harms of strategies on schools, school staff or students. SEARCH METHODS We used standard, extensive Cochrane search methods. The latest search was between 1 September 2016 and 30 April 2021 to identify any relevant trials published since the last published review. SELECTION CRITERIA We defined 'Implementation' as the use of strategies to adopt and integrate evidence-based health interventions and to change practice patterns within specific settings. We included any trial (randomised controlled trial (RCT) or non-randomised controlled trial (non-RCT)) conducted at any scale, with a parallel control group that compared a strategy to implement policies or practices to address diet, physical activity, overweight or obesity, tobacco or alcohol use by students to 'no intervention', 'usual' practice or a different implementation strategy. DATA COLLECTION AND ANALYSIS We used standard Cochrane methods. Given the large number of outcomes reported, we selected and included the effects of a single outcome measure for each trial for the primary (implementation) and secondary (student health behaviour and obesity) outcomes using a decision hierarchy. Where possible, we calculated standardised mean differences (SMDs) to account for variable outcome measures with 95% confidence intervals (CI). For RCTs, we conducted meta-analyses of primary and secondary outcomes using a random-effects model, or in instances where there were between two and five studies, a fixed-effect model. The synthesis of the effects for non-randomised studies followed the 'Synthesis without meta-analysis' (SWiM) guidelines. MAIN RESULTS We included an additional 11 trials in this update bringing the total number of included studies in the review to 38. Of these, 22 were conducted in the USA. Twenty-six studies used RCT designs. Seventeen trials tested strategies to implement healthy eating, 12 physical activity and six a combination of risk factors. Just one trial sought to increase the implementation of interventions to delay initiation or reduce the consumption of alcohol. All trials used multiple implementation strategies, the most common being educational materials, educational outreach and educational meetings. The overall certainty of evidence was low and ranged from very low to moderate for secondary review outcomes. Pooled analyses of RCTs found, relative to a control, the use of implementation strategies may result in a large increase in the implementation of interventions in schools (SMD 1.04, 95% CI 0.74 to 1.34; 22 RCTs, 1917 participants; low-certainty evidence). For secondary outcomes we found, relative to control, the use of implementation strategies to support intervention implementation may result in a slight improvement on measures of student diet (SMD 0.08, 95% CI 0.02 to 0.15; 11 RCTs, 16,649 participants; low-certainty evidence) and physical activity (SMD 0.09, 95% CI -0.02 to 0.19; 9 RCTs, 16,389 participants; low-certainty evidence). The effects on obesity probably suggest little to no difference (SMD -0.02, 95% CI -0.05 to 0.02; 8 RCTs, 18,618 participants; moderate-certainty evidence). The effects on tobacco use are very uncertain (SMD -0.03, 95% CIs -0.23 to 0.18; 3 RCTs, 3635 participants; very low-certainty evidence). One RCT assessed measures of student alcohol use and found strategies to support implementation may result in a slight increase in use (odds ratio 1.10, 95% CI 0.77 to 1.56; P = 0.60; 2105 participants). Few trials reported the economic evaluations of implementation strategies, the methods of which were heterogeneous and evidence graded as very uncertain. A lack of consistent terminology describing implementation strategies was an important limitation of the review. AUTHORS' CONCLUSIONS The use of implementation strategies may result in large increases in implementation of interventions, and slight improvements in measures of student diet, and physical activity. Further research is required to assess the impact of implementation strategies on such behavioural- and obesity-related outcomes, including on measures of alcohol use, where the findings of one trial suggest it may slightly increase student risk. Given the low certainty of the available evidence for most measures further research is required to guide efforts to facilitate the translation of evidence into practice in this setting.
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Affiliation(s)
- Luke Wolfenden
- School of Medicine and Public Health, University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- Hunter New England Population Health, Hunter New England Local Health District, Wallsend, NSW, Australia
| | - Sam McCrabb
- School of Medicine and Public Health, University of Newcastle, Callaghan, NSW, Australia
| | - Courtney Barnes
- School of Medicine and Public Health, University of Newcastle, Callaghan, NSW, Australia
| | - Kate M O'Brien
- School of Medicine and Public Health, University of Newcastle, Callaghan, NSW, Australia
| | - Kwok W Ng
- Physical Activity for Health Research Cluster, Department of Physical Education and Sport Sciences, University of Limerick, Limerick, Ireland
- School of Educational Sciences and Psychology, University of Eastern Finland, Joensu, Finland
| | - Nicole K Nathan
- School of Medicine and Public Health, University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- Hunter New England Population Health, Hunter New England Local Health District, Wallsend, NSW, Australia
| | - Rachel Sutherland
- School of Medicine and Public Health, University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- Hunter New England Population Health, Hunter New England Local Health District, Wallsend, NSW, Australia
| | - Rebecca K Hodder
- School of Medicine and Public Health, University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- Hunter New England Population Health, Hunter New England Local Health District, Wallsend, NSW, Australia
| | - Flora Tzelepis
- School of Medicine and Public Health, University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Erin Nolan
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Christopher M Williams
- School of Medicine and Public Health, University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- Hunter New England Population Health, Hunter New England Local Health District, Wallsend, NSW, Australia
- Musculoskeletal Division, The George Institute for Global Health, Sydney, NSW, Australia
| | - Sze Lin Yoong
- School of Medicine and Public Health, University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- Hunter New England Population Health, Hunter New England Local Health District, Wallsend, NSW, Australia
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An R, Li D, Cole M, Park K, Lyon AR, White NH. Implementation of School Diabetes Care in the United States: A Scoping Review. J Sch Nurs 2022; 38:61-73. [PMID: 34184953 PMCID: PMC9924139 DOI: 10.1177/10598405211026328] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Diabetes management at school demands close collaboration of multiple stakeholders, including students with diabetes and parents, school nurses, teachers/staff, and local health care providers. This scoping review identified and synthesized evidence concerning factors that contributed to the quality and effectiveness of diabetes care implementation in U.S. K-12 schools. Forty-six studies met the eligibility criteria and were included. Five common factors emerged surrounding training and experiences, communications, parent engagement, resource allocations, and school environment. Complex interactions between multiple stakeholders jointly determined the quality of school diabetes care. A conceptual model was established to elucidate the complex interactions between multiple stakeholders and the relevant facilitators and barriers. Future research should improve sample representativeness, contrast school diabetes care practices to the national guidelines, and assess the impact of the social, economic, and political environment at federal, state, local/district levels on school diabetes care implementation.
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Affiliation(s)
- Ruopeng An
- Brown School, 7548Washington University, St. Louis, MO, USA
| | - Danyi Li
- Brown School, 7548Washington University, St. Louis, MO, USA
| | - Marjorie Cole
- Missouri Department of Health & Senior Services, Jefferson City, MO, USA
| | | | - Aaron R Lyon
- Department of Psychiatry and Behavioral Sciences, 7284University of Washington, Seattle, WA, USA
| | - Neil H White
- School of Medicine, Washington University, St. Louis, MO, USA
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Naseeb M, Bruneau ML, Milliron BJ, Sukumar D, Foster GD, Smith SA, Volpe SL. Changes in Dietary Magnesium Intake and Risk of Type 2 Diabetes Mellitus in Middle School Students: Using Data from the HEALTHY Study. J Nutr 2021; 151:3442-3449. [PMID: 34313771 PMCID: PMC8921608 DOI: 10.1093/jn/nxab272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 03/11/2021] [Accepted: 07/23/2021] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The HEALTHY Study was a multicomponent school-based intervention, designed to prevent type 2 diabetes mellitus (T2DM) in middle-school students. OBJECTIVES We examined whether the difference in dietary magnesium intake, BMI percentile, and plasma glucose and insulin concentrations from 6th to 8th grade were related in the intervention schools and in the control schools that participated in the HEALTHY Study. METHODS A total of 2181 ethnically diverse students, from 11.3 to 13.7 y of age, with completed dietary records, BMI percentile, and plasma glucose and insulin concentrations at 6th and 8th grades were included. Dietary magnesium intake was self-reported using the Block Kids FFQ. A hierarchical multiple regression model was used to determine whether the differences in dietary magnesium intake, BMI percentile, and plasma glucose and insulin concentrations from 6th to 8th grades were related, while adjusting for dietary calcium intake and total energy intake. RESULTS The difference in dietary magnesium intake was significantly related to changes in BMI percentile from 6th to 8th grade in intervention and in control schools [intervention: β: -0.07; 95% CI: -0.58, -0.02; P = 0.03; R2 (regression coefficient effect size): 0.14; 95% CI for R2: 0.10, 0.17; control: β: -0.08; 95% CI: -0.63, -0.09; P = 0.01; R2: 0.12; 95% CI for R2: 0.08, 0.15]. The difference in dietary magnesium intake was not related to plasma glucose and insulin concentrations in intervention and in control schools. CONCLUSIONS We conclude that a multicomponent intervention was associated with reduced risk of T2DM, and that this association may be modulated, in part, by magnesium. The differences in dietary magnesium intake from 6th to 8th grade were negatively related to changes in BMI percentile among middle-school students.
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Affiliation(s)
- Manal Naseeb
- Department of Clinical Nutrition, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Michael L Bruneau
- Department of Health Sciences, College of Nursing and Health Professions, Drexel University, Philadelphia, PA, USA
| | - Brandy-Joe Milliron
- Department of Nutrition Sciences, College of Nursing and Health Professions, Drexel University, Philadelphia, PA, USA
| | - Deeptha Sukumar
- Department of Nutrition Sciences, College of Nursing and Health Professions, Drexel University, Philadelphia, PA, USA
| | | | - Sinclair A Smith
- Department of Health Sciences, College of Nursing and Health Professions, Drexel University, Philadelphia, PA, USA
| | - Stella L Volpe
- Department of Human Nutrition, Foods, and Exercise, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
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Neil-Sztramko SE, Caldwell H, Dobbins M. School-based physical activity programs for promoting physical activity and fitness in children and adolescents aged 6 to 18. Cochrane Database Syst Rev 2021; 9:CD007651. [PMID: 34555181 PMCID: PMC8459921 DOI: 10.1002/14651858.cd007651.pub3] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
BACKGROUND Physical activity among children and adolescents is associated with lower adiposity, improved cardio-metabolic health, and improved fitness. Worldwide, fewer than 30% of children and adolescents meet global physical activity recommendations of at least 60 minutes of moderate to vigorous physical activity per day. Schools may be ideal sites for interventions given that children and adolescents in most parts of the world spend a substantial amount of time in transit to and from school or attending school. OBJECTIVES The purpose of this review update is to summarise the evidence on effectiveness of school-based interventions in increasing moderate to vigorous physical activity and improving fitness among children and adolescents 6 to 18 years of age. Specific objectives are: • to evaluate the effects of school-based interventions on increasing physical activity and improving fitness among children and adolescents; • to evaluate the effects of school-based interventions on improving body composition; and • to determine whether certain combinations or components (or both) of school-based interventions are more effective than others in promoting physical activity and fitness in this target population. SEARCH METHODS We searched CENTRAL, MEDLINE, Embase, CINAHL, PsycINFO, BIOSIS, SPORTDiscus, and Sociological Abstracts to 1 June 2020, without language restrictions. We screened reference lists of included articles and relevant systematic reviews. We contacted primary authors of studies to ask for additional information. SELECTION CRITERIA Eligible interventions were relevant to public health practice (i.e. were not delivered by a clinician), were implemented in the school setting, and aimed to increase physical activity among all school-attending children and adolescents (aged 6 to 18) for at least 12 weeks. The review was limited to randomised controlled trials. For this update, we have added two new criteria: the primary aim of the study was to increase physical activity or fitness, and the study used an objective measure of physical activity or fitness. Primary outcomes included proportion of participants meeting physical activity guidelines and duration of moderate to vigorous physical activity and sedentary time (new to this update). Secondary outcomes included measured body mass index (BMI), physical fitness, health-related quality of life (new to this update), and adverse events (new to this update). Television viewing time, blood cholesterol, and blood pressure have been removed from this update. DATA COLLECTION AND ANALYSIS: Two independent review authors used standardised forms to assess each study for relevance, to extract data, and to assess risk of bias. When discrepancies existed, discussion occurred until consensus was reached. Certainty of evidence was assessed according to GRADE. A random-effects meta-analysis based on the inverse variance method was conducted with participants stratified by age (children versus adolescents) when sufficient data were reported. Subgroup analyses explored effects by intervention type. MAIN RESULTS Based on the three new inclusion criteria, we excluded 16 of the 44 studies included in the previous version of this review. We screened an additional 9968 titles (search October 2011 to June 2020), of which 978 unique studies were potentially relevant and 61 met all criteria for this update. We included a total of 89 studies representing complete data for 66,752 study participants. Most studies included children only (n = 56), followed by adolescents only (n = 22), and both (n = 10); one study did not report student age. Multi-component interventions were most common (n = 40), followed by schooltime physical activity (n = 19), enhanced physical education (n = 15), and before and after school programmes (n = 14); one study explored both enhanced physical education and an after school programme. Lack of blinding of participants, personnel, and outcome assessors and loss to follow-up were the most common sources of bias. Results show that school-based physical activity interventions probably result in little to no increase in time engaged in moderate to vigorous physical activity (mean difference (MD) 0.73 minutes/d, 95% confidence interval (CI) 0.16 to 1.30; 33 studies; moderate-certainty evidence) and may lead to little to no decrease in sedentary time (MD -3.78 minutes/d, 95% CI -7.80 to 0.24; 16 studies; low-certainty evidence). School-based physical activity interventions may improve physical fitness reported as maximal oxygen uptake (VO₂max) (MD 1.19 mL/kg/min, 95% CI 0.57 to 1.82; 13 studies; low-certainty evidence). School-based physical activity interventions may result in a very small decrease in BMI z-scores (MD -0.06, 95% CI -0.09 to -0.02; 21 studies; low-certainty evidence) and may not impact BMI expressed as kg/m² (MD -0.07, 95% CI -0.15 to 0.01; 50 studies; low-certainty evidence). We are very uncertain whether school-based physical activity interventions impact health-related quality of life or adverse events. AUTHORS' CONCLUSIONS Given the variability of results and the overall small effects, school staff and public health professionals must give the matter considerable thought before implementing school-based physical activity interventions. Given the heterogeneity of effects, the risk of bias, and findings that the magnitude of effect is generally small, results should be interpreted cautiously.
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Affiliation(s)
| | - Hilary Caldwell
- Department of Kinesiology, Child Health & Exercise Medicine Program, McMaster University, Hamilton, Canada
| | - Maureen Dobbins
- School of Nursing, McMaster University, Hamilton, Canada
- National Collaborating Centre for Methods and Tools, Hamilton, Canada
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Rationale and development of a manualised dietetic intervention for adults undergoing psychological treatment for an eating disorder. Eat Weight Disord 2021; 26:1467-1481. [PMID: 32686057 DOI: 10.1007/s40519-020-00955-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 07/04/2020] [Indexed: 12/21/2022] Open
Abstract
PURPOSE Due to the current dearth of literature regarding dietetic treatment for patients with an eating disorder (ED), no manualised dietetic interventions exist to enable the testing of dietetic treatments in this population. This paper aims to: (1) describe the rationale and development of a manualised dietetic intervention for adults undergoing concurrent psychological treatment for an ED; and (2) provide an overview of the feasibility testing of this intervention. METHODS Current best evidence to date for dietetic treatment in EDs was utilised to develop a manualised dietetic intervention for feasibility testing alongside outpatient psychological 'treatment as usual'. RESULTS The developed intervention consists of five, dietitian-delivered outpatient sessions: (1) getting started; (2) mechanical eating and dietary rules; (3) estimating portion sizes and social eating; (4) maximising your meal plan and meal preparation; and (5) review and treatment planning as well as pre- and post-intervention assessments. CONCLUSION This paper is intended as a resource for clinicians and researchers in the conduct of future studies examining dietetic treatment for patients with an ED. LEVEL OF EVIDENCE Level V, description of a new manualised, reproducible dietetic intervention.
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Farris AR, Mann G, Parks J, Arrowood J, Roy M, Misyak S. School Nutrition Director Perceptions of Flexible Regulations for School Nutrition Programs in One Southeastern State. THE JOURNAL OF SCHOOL HEALTH 2021; 91:298-306. [PMID: 33665846 DOI: 10.1111/josh.13002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 10/29/2020] [Accepted: 11/27/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND Schools are a promising site for influencing the dietary intake of children and adolescents. The US Department of Agriculture recently released flexibilities to requirements for whole-grains, sodium, and low-fat milk in schools who demonstrated difficulty meeting nutrition standards for school meal programs. The support of School Nutrition Directors (SNDs) is vital to the success of school food environment changes; however, few studies have explored SNDs perceptions to changes in nutrition standards. METHODS Experiences and perspectives toward nutrition standards of 10 SNDs, and their satisfaction with flexibilities for whole-grains, sodium, and low-fat milk were explored using a semi-structured interview. Responses were analyzed using an inductive approach with thematic analysis. RESULTS Three broad categories emerged challenges with the Healthy, Hunger-Free Kids Act, food preferences and acceptability, and support and representation. A greater need for internal and external support, assistance in equipment and staff, procurement of foods compliant with regulations and acceptable to students, and more input on federal decisions and policies were perceived as important. CONCLUSIONS Results provide critical insight into the implementation of nutrition standards. Future research and changes to school nutrition programs should consider these challenges as they strive to meet the needs of this important population.
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Affiliation(s)
- Alisha R Farris
- Department of Nutrition and Health Care Management, Appalachian State University, 1179 State Farm Road, ASU Box 32168, Boone, NC, 28608
| | - Georgianna Mann
- Department of Nutrition and Hospitality Management, University of Mississippi, 108 Lenoir Hall, University, MS, 38677
| | - Justin Parks
- Department of Nutrition and Health Care Management, Appalachian State University, 1179 State Farm Road, ASU Box 32168, Boone, NC, 28608
| | - John Arrowood
- Department of Nutrition and Health Care Management, Appalachian State University, 1179 State Farm Road, ASU Box 32168, Boone, NC, 28608
| | - Manan Roy
- Department of Nutrition and Health Care Management, Appalachian State University, 1179 State Farm Road, ASU Box 32168, Boone, NC, 28608
| | - Sarah Misyak
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, 333 Wallace Hall, Blacksburg, VA, 24061
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Naseeb M, Milliron BJ, Bruneau ML, Sukumar D, Foster GD, Smith SA, Volpe SL. Dietary magnesium intake in relation to body mass index and glycemic indices in middle school students from the HEALTHY Study. Nutr Health 2021; 27:211-219. [PMID: 33530870 DOI: 10.1177/0260106020982345] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND Data on dietary magnesium intake on the risk of type 2 diabetes mellitus (T2DM) among children and adolescents is limited. AIM We examined whether dietary magnesium intake was related to body mass index (BMI) percentile, and glycemic indices at baseline and at end of the HEALTHY Study for both intervention and control schools. The HEALTHY Study was a multi-component, school-based intervention, to prevent T2DM in children and adolescents from 6th to 8th grades. METHODS A secondary data analyses of 2181 ethnically diverse students with completed dietary records, BMI percentile, and plasma insulin and glucose concentrations at baseline (6th grade) and end of study (8th grade) were included from the HEALTHY Study. Dietary magnesium intake was self-reported using the Block Kids Food Frequency Questionnaire. A hierarchical multiple regression model was used to determine the relationships between dietary magnesium intake, BMI percentile, and glycemic indices at baseline and end of the HEALTHY Study, adjusting for magnesium intake from supplements, total energy intake, and fitness level. RESULTS Dietary magnesium intake was related to BMI percentile at baseline and at end of the HEATHY Study (β = -0.05, 95% CI = -0.02 to 0, p = 0.04; β = -0.06, 95% CI = -0.02 to -0.003, p = 0.004); R 2 [regression coefficient effect size] = 0.03; R 2 = 0.06). Dietary magnesium intake was not related to plasma insulin and glucose concentrations at baseline and end of the HEALTHY Study. CONCLUSION Dietary magnesium intake was inversely related to BMI percentile among middle school students from the HEALTHY Study. Research is required to evaluate the dose-response relationship between fruit and vegetable consumption (good sources of magnesium) and risk of T2DM in children and adolescents. This relationship also needs to be explored among different BMI categories.
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Affiliation(s)
- Manal Naseeb
- Clinical Nutrition Department, 6527Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Brandy-Joe Milliron
- Department of Nutrition Sciences, 6527Drexel University, Philadelphia, PA, USA
| | - Michael L Bruneau
- Department of Health Sciences, 6527Drexel University, Philadelphia, PA, USA
| | - Deeptha Sukumar
- Department of Nutrition Sciences, 6527Drexel University, Philadelphia, PA, USA
| | | | - Sinclair A Smith
- Department of Health Sciences, 6527Drexel University, Philadelphia, PA, USA
| | - Stella L Volpe
- 1757Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
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Abstract
We have recently been funded by the UK Prevention Research Partnership (UKPRP) to develop a UK school food network. The overarching aim is to build a community working towards a more health-promoting food and nutrition system in UK schools (primary and secondary). Here we describe the current status of school food research, including a review of the literature supporting the health-promoting schools approach and outline the opportunities for intervention and innovation establishment of the network present. Key potential school food research themes are described, and their prioritisation within the network, as well as network activities that have been planned, with the ultimate ambition of reducing socio-economic diet-related inequalities, and, consequently, non-communicable disease risk.
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Napolitano MA, Lynch SB, Mavredes M, Shambon B, Posey L. Evaluating an Interactive Digital Intervention for College Weight Gain Prevention. JOURNAL OF NUTRITION EDUCATION AND BEHAVIOR 2020; 52:890-897. [PMID: 32456988 DOI: 10.1016/j.jneb.2020.04.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 04/14/2020] [Accepted: 04/15/2020] [Indexed: 06/11/2023]
Abstract
OBJECTIVE Pilot a digital interactive intervention for weight gain prevention among college students. METHODS One sample pre-post study reporting on initial usability and changes in theoretical constructs (ie, self-efficacy, behavioral capability, elaboration) and program acceptability. Twenty college freshmen (mean age, 18.25 ± 0.72 years) reviewed a digital program providing self-assessment and brief tailored feedback on 8 behaviors that relate to a healthy weight: physical activity, sedentary behavior, and consumption of sugary beverages, high fat snacks, breakfast, fried foods, fruits and vegetables, and pizza. RESULTS At posttest, improvements in self-efficacy were found for 5 behaviors (ie, physical activity, high fat snacks, breakfast, fried foods, fruits and vegetables); improvements in behavioral capability were found for 3 behaviors (ie, high fat snacks, fried foods, and fruits and vegetables). Acceptability benchmarks included: positive impression (60%), relevance (95%), and ease of comprehension (75%). CONCLUSIONS AND IMPLICATIONS This program demonstrates acceptability for a digital weight gain prevention intervention, with improvements in behavioral mediators of change. Suggestions to simplify messaging and allowing for user control may enhance acceptability and comprehension. There is a need for further testing with larger more diverse populations before broader implementation by universities to address student health.
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Affiliation(s)
- Melissa A Napolitano
- Department of Prevention and Community, Milken Institute School of Public Health, The George Washington University, Washington, DC; Department of Exercise and Nutrition Sciences, Milken Institute School of Public Health, The George Washington University, Washington, DC.
| | | | - Meghan Mavredes
- Department of Prevention and Community, Milken Institute School of Public Health, The George Washington University, Washington, DC
| | - Benjamin Shambon
- Department of Prevention and Community, Milken Institute School of Public Health, The George Washington University, Washington, DC
| | - Laurie Posey
- The George Washington University School of Nursing, Washington, DC
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Napolitano MA, Lynch SB, Mavredes MN, Shambon BD, Posey L. Formative work to design a digital learning self-assessment and feedback tool to prevent weight gain among college students. Digit Health 2020; 6:2055207620979458. [PMID: 33414926 PMCID: PMC7750757 DOI: 10.1177/2055207620979458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 11/18/2020] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE While colleges have implemented brief, tailored interventions for health-risk areas such as alcohol prevention, theoretically-guided digital learning offerings for weight gain prevention have lagged behind in programming and implementation. Thus, the objective was to design and usability test a weight gain prevention digital learning platform for college students with modules targeting key nutrition and physical activity behaviors. METHODS Development occurred in iterative phases: formative research, descriptive normative data collection, prototype development, and usability testing. Formative research consisted of background work and survey administration to incoming and current freshmen. Prototype development was guided by theories of behavior change and cognitive processing, and consisted of brief assessment and feedback using written text, graphs, and videos. Iterative usability testing was conducted. RESULTS Current freshmen reported eating more quick order meals per week than incoming freshman, but fewer high-fat snacks and fewer sugary beverages. Current freshmen reported more sedentary time than incoming freshmen. Based on iterative testing results, eight behavioral targets were established: breakfast, high-fat snacks, fried foods, sugary beverages, fruit/vegetables, physical activity, pizza intake, and sedentary behavior. Initial usability testers indicated the modules were easy to understand, held their attention, and were somewhat novel. Analysis of qualitative feedback revealed themes related to content, layout, structure and suggested refinements to the modules. CONCLUSIONS A gap exists for evidence-based obesity prevention programs targeted to adolescents as they transition into adulthood. Brief, tailored digital learning interventions show promise towards addressing key behavioral nutrition and physical activity targets among students during the transition to college.
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Affiliation(s)
- Melissa A Napolitano
- Department of Prevention and Community Health, The George
Washington University, Milken Institute School of Public Health, Washington,
USA
- Department of Exercise and Nutrition Sciences, The George
Washington University, Milken Institute School of Public Health, Washington,
USA
| | | | - Meghan N Mavredes
- Department of Prevention and Community Health, The George
Washington University, Milken Institute School of Public Health, Washington,
USA
| | - Benjamin D Shambon
- Department of Prevention and Community Health, The George
Washington University, Milken Institute School of Public Health, Washington,
USA
| | - Laurie Posey
- The George Washington University School of Nursing, Washington,
USA
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Hollands GJ, Carter P, Anwer S, King SE, Jebb SA, Ogilvie D, Shemilt I, Higgins JPT, Marteau TM. Altering the availability or proximity of food, alcohol, and tobacco products to change their selection and consumption. Cochrane Database Syst Rev 2019; 9:CD012573. [PMID: 31482606 PMCID: PMC6953356 DOI: 10.1002/14651858.cd012573.pub3] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Overconsumption of food, alcohol, and tobacco products increases the risk of non-communicable diseases. Interventions to change characteristics of physical micro-environments where people may select or consume these products - including shops, restaurants, workplaces, and schools - are of considerable public health policy and research interest. This review addresses two types of intervention within such environments: altering the availability (the range and/or amount of options) of these products, or their proximity (the distance at which they are positioned) to potential consumers. OBJECTIVES 1. To assess the impact on selection and consumption of altering the availability or proximity of (a) food (including non-alcoholic beverages), (b) alcohol, and (c) tobacco products.2. To assess the extent to which the impact of these interventions is modified by characteristics of: i. studies, ii. interventions, and iii. SEARCH METHODS We searched CENTRAL, MEDLINE, Embase, PsycINFO, and seven other published or grey literature databases, as well as trial registries and key websites, up to 23 July 2018, followed by citation searches. SELECTION CRITERIA We included randomised controlled trials with between-participants (parallel group) or within-participants (cross-over) designs. Eligible studies compared effects of exposure to at least two different levels of availability of a product or its proximity, and included a measure of selection or consumption of the manipulated product. DATA COLLECTION AND ANALYSIS We used a novel semi-automated screening workflow and applied standard Cochrane methods to select eligible studies, collect data, and assess risk of bias. In separate analyses for availability interventions and proximity interventions, we combined results using random-effects meta-analysis and meta-regression models to estimate summary effect sizes (as standardised mean differences (SMDs)) and to investigate associations between summary effect sizes and selected study, intervention, or participant characteristics. We rated the certainty of evidence for each outcome using GRADE. MAIN RESULTS We included 24 studies, with the majority (20/24) giving concerns about risk of bias. All of the included studies investigated food products; none investigated alcohol or tobacco. The majority were conducted in laboratory settings (14/24), with adult participants (17/24), and used between-participants designs (19/24). All studies were conducted in high-income countries, predominantly in the USA (14/24).Six studies investigated availability interventions, of which two changed the absolute number of different options available, and four altered the relative proportion of less-healthy (to healthier) options. Most studies (4/6) manipulated snack foods or drinks. For selection outcomes, meta-analysis of three comparisons from three studies (n = 154) found that exposure to fewer options resulted in a large reduction in selection of the targeted food(s): SMD -1.13 (95% confidence interval (CI) -1.90 to -0.37) (low certainty evidence). For consumption outcomes, meta-analysis of three comparisons from two studies (n = 150) found that exposure to fewer options resulted in a moderate reduction in consumption of those foods, but with considerable uncertainty: SMD -0.55 (95% CI -1.27 to 0.18) (low certainty evidence).Eighteen studies investigated proximity interventions. Most (14/18) changed the distance at which a snack food or drink was placed from the participants, whilst four studies changed the order of meal components encountered along a line. For selection outcomes, only one study with one comparison (n = 41) was identified, which found that food placed farther away resulted in a moderate reduction in its selection: SMD -0.65 (95% CI -1.29 to -0.01) (very low certainty evidence). For consumption outcomes, meta-analysis of 15 comparisons from 12 studies (n = 1098) found that exposure to food placed farther away resulted in a moderate reduction in its consumption: SMD -0.60 (95% CI -0.84 to -0.36) (low certainty evidence). Meta-regression analyses indicated that this effect was greater: the farther away the product was placed; when only the targeted product(s) was available; when participants were of low deprivation status; and when the study was at high risk of bias. AUTHORS' CONCLUSIONS The current evidence suggests that changing the number of available food options or altering the positioning of foods could contribute to meaningful changes in behaviour, justifying policy actions to promote such changes within food environments. However, the certainty of this evidence as assessed by GRADE is low or very low. To enable more certain and generalisable conclusions about these potentially important effects, further research is warranted in real-world settings, intervening across a wider range of foods - as well as alcohol and tobacco products - and over sustained time periods.
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Affiliation(s)
- Gareth J Hollands
- University of CambridgeBehaviour and Health Research UnitForvie SiteRobinson WayCambridgeUKCB2 0SR
| | - Patrice Carter
- University College LondonCentre for Outcomes Research and Effectiveness1‐19 Torrington PlaceLondonUKWC1E 7HB
| | - Sumayya Anwer
- University of BristolPopulation Health Sciences, Bristol Medical SchoolCanynge Hall, 39 Whatley RoadBristolUKBS8 2PS
| | - Sarah E King
- University of CambridgeBehaviour and Health Research UnitForvie SiteRobinson WayCambridgeUKCB2 0SR
| | - Susan A Jebb
- University of OxfordNuffield Department of Primary Care Health SciencesRadcliffe Observatory QuarterWoodstock RoadOxfordOxfordshireUKOX2 6GG
| | - David Ogilvie
- University of CambridgeMRC Epidemiology UnitBox 285Cambridge Biomedical CampusCambridgeUKCB2 0QQ
| | - Ian Shemilt
- University College LondonEPPI‐Centre10 Woburn SquareLondonUKWC1H 0NR
| | - Julian P T Higgins
- University of BristolPopulation Health Sciences, Bristol Medical SchoolCanynge Hall, 39 Whatley RoadBristolUKBS8 2PS
| | - Theresa M Marteau
- University of CambridgeBehaviour and Health Research UnitForvie SiteRobinson WayCambridgeUKCB2 0SR
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Hollands GJ, Carter P, Anwer S, King SE, Jebb SA, Ogilvie D, Shemilt I, Higgins JPT, Marteau TM. Altering the availability or proximity of food, alcohol, and tobacco products to change their selection and consumption. Cochrane Database Syst Rev 2019; 8:CD012573. [PMID: 31452193 PMCID: PMC6710643 DOI: 10.1002/14651858.cd012573.pub2] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Overconsumption of food, alcohol, and tobacco products increases the risk of non-communicable diseases. Interventions to change characteristics of physical micro-environments where people may select or consume these products - including shops, restaurants, workplaces, and schools - are of considerable public health policy and research interest. This review addresses two types of intervention within such environments: altering the availability (the range and/or amount of options) of these products, or their proximity (the distance at which they are positioned) to potential consumers. OBJECTIVES 1. To assess the impact on selection and consumption of altering the availability or proximity of (a) food (including non-alcoholic beverages), (b) alcohol, and (c) tobacco products.2. To assess the extent to which the impact of these interventions is modified by characteristics of: i. studies, ii. interventions, and iii. SEARCH METHODS We searched CENTRAL, MEDLINE, Embase, PsycINFO, and seven other published or grey literature databases, as well as trial registries and key websites, up to 23 July 2018, followed by citation searches. SELECTION CRITERIA We included randomised controlled trials with between-participants (parallel group) or within-participants (cross-over) designs. Eligible studies compared effects of exposure to at least two different levels of availability of a product or its proximity, and included a measure of selection or consumption of the manipulated product. DATA COLLECTION AND ANALYSIS We used a novel semi-automated screening workflow and applied standard Cochrane methods to select eligible studies, collect data, and assess risk of bias. In separate analyses for availability interventions and proximity interventions, we combined results using random-effects meta-analysis and meta-regression models to estimate summary effect sizes (as standardised mean differences (SMDs)) and to investigate associations between summary effect sizes and selected study, intervention, or participant characteristics. We rated the certainty of evidence for each outcome using GRADE. MAIN RESULTS We included 24 studies, with the majority (20/24) giving concerns about risk of bias. All of the included studies investigated food products; none investigated alcohol or tobacco. The majority were conducted in laboratory settings (14/24), with adult participants (17/24), and used between-participants designs (19/24). All studies were conducted in high-income countries, predominantly in the USA (14/24).Six studies investigated availability interventions, of which two changed the absolute number of different options available, and four altered the relative proportion of less-healthy (to healthier) options. Most studies (4/6) manipulated snack foods or drinks. For selection outcomes, meta-analysis of three comparisons from three studies (n = 154) found that exposure to fewer options resulted in a large reduction in selection of the targeted food(s): SMD -1.13 (95% confidence interval (CI) -1.90 to -0.37) (low certainty evidence). For consumption outcomes, meta-analysis of three comparisons from two studies (n = 150) found that exposure to fewer options resulted in a moderate reduction in consumption of those foods, but with considerable uncertainty: SMD -0.55 (95% CI -1.27 to 0.18) (low certainty evidence).Eighteen studies investigated proximity interventions. Most (14/18) changed the distance at which a snack food or drink was placed from the participants, whilst four studies changed the order of meal components encountered along a line. For selection outcomes, only one study with one comparison (n = 41) was identified, which found that food placed farther away resulted in a moderate reduction in its selection: SMD -0.65 (95% CI -1.29 to -0.01) (very low certainty evidence). For consumption outcomes, meta-analysis of 15 comparisons from 12 studies (n = 1098) found that exposure to food placed farther away resulted in a moderate reduction in its consumption: SMD -0.60 (95% CI -0.84 to -0.36) (low certainty evidence). Meta-regression analyses indicated that this effect was greater: the farther away the product was placed; when only the targeted product(s) was available; when participants were of low deprivation status; and when the study was at high risk of bias. AUTHORS' CONCLUSIONS The current evidence suggests that changing the number of available food options or altering the positioning of foods could contribute to meaningful changes in behaviour, justifying policy actions to promote such changes within food environments. However, the certainty of this evidence as assessed by GRADE is low or very low. To enable more certain and generalisable conclusions about these potentially important effects, further research is warranted in real-world settings, intervening across a wider range of foods - as well as alcohol and tobacco products - and over sustained time periods.
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Affiliation(s)
- Gareth J Hollands
- University of CambridgeBehaviour and Health Research UnitForvie SiteRobinson WayCambridgeUKCB2 0SR
| | - Patrice Carter
- University College LondonCentre for Outcomes Research and Effectiveness1‐19 Torrington PlaceLondonUKWC1E 7HB
| | - Sumayya Anwer
- University of BristolPopulation Health Sciences, Bristol Medical SchoolCanynge Hall, 39 Whatley RoadBristolUKBS8 2PS
| | - Sarah E King
- University of CambridgeBehaviour and Health Research UnitForvie SiteRobinson WayCambridgeUKCB2 0SR
| | - Susan A Jebb
- University of OxfordNuffield Department of Primary Care Health SciencesRadcliffe Observatory QuarterWoodstock RoadOxfordUKOX2 6GG
| | - David Ogilvie
- University of CambridgeMRC Epidemiology UnitBox 285Cambridge Biomedical CampusCambridgeUKCB2 0QQ
| | - Ian Shemilt
- University College LondonEPPI‐Centre10 Woburn SquareLondonUKWC1H 0NR
| | - Julian P T Higgins
- University of BristolPopulation Health Sciences, Bristol Medical SchoolCanynge Hall, 39 Whatley RoadBristolUKBS8 2PS
| | - Theresa M Marteau
- University of CambridgeBehaviour and Health Research UnitForvie SiteRobinson WayCambridgeUKCB2 0SR
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Naude CE, Visser ME, Nguyen KA, Durao S, Schoonees A. Effects of total fat intake on bodyweight in children. Cochrane Database Syst Rev 2018; 7:CD012960. [PMID: 29974953 PMCID: PMC6513603 DOI: 10.1002/14651858.cd012960.pub2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND As part of efforts to prevent childhood overweight and obesity, we need to understand the relationship between total fat intake and body fatness in generally healthy children. OBJECTIVES To assess the effects and associations of total fat intake on measures of weight and body fatness in children and young people not aiming to lose weight. SEARCH METHODS For this update we revised the previous search strategy and ran it over all years in the Cochrane Library, MEDLINE (Ovid), MEDLINE (PubMed), and Embase (Ovid) (current to 23 May 2017). No language and publication status limits were applied. We searched the World Health Organization International Clinical Trials Registry Platform and ClinicalTrials.gov for ongoing and unpublished studies (5 June 2017). SELECTION CRITERIA We included randomised controlled trials (RCTs) in children aged 24 months to 18 years, with or without risk factors for cardiovascular disease, randomised to a lower fat (30% or less of total energy (TE)) versus usual or moderate-fat diet (greater than 30%TE), without the intention to reduce weight, and assessed a measure of weight or body fatness after at least six months. We included prospective cohort studies if they related baseline total fat intake to weight or body fatness at least 12 months later. DATA COLLECTION AND ANALYSIS We extracted data on participants, interventions or exposures, controls and outcomes, and trial or cohort quality characteristics, as well as data on potential effect modifiers, and assessed risk of bias for all included studies. We extracted body weight and blood lipid levels outcomes at six months, six to 12 months, one to two years, two to five years and more than five years for RCTs; and for cohort studies, at baseline to one year, one to two years, two to five years, five to 10 years and more than 10 years. We planned to perform random-effects meta-analyses with relevant subgrouping, and sensitivity and funnel plot analyses where data allowed. MAIN RESULTS We included 24 studies comprising three parallel-group RCTs (n = 1054 randomised) and 21 prospective analytical cohort studies (about 25,059 children completed). Twenty-three studies were conducted in high-income countries. No meta-analyses were possible, since only one RCT reported the same outcome at each time point range for all outcomes, and cohort studies were too heterogeneous to combine.Effects of dietary counselling to reduce total fat intake from RCTsTwo studies recruited children aged between 4 and 11 years and a third recruited children aged 12 to 13 years. Interventions were combinations of individual and group counselling, and education sessions in clinics, schools and homes, delivered by dieticians, nutritionists, behaviourists or trained, supervised teachers. Concerns about imprecision and poor reporting limited our confidence in our findings. In addition, the inclusion of hypercholesteraemic children in two trials raised concerns about applicability.One study of dietary counselling to lower total fat intake found that the intervention may make little or no difference to weight compared with usual diet at 12 months (mean difference (MD) -0.50 kg, 95% confidence interval (CI) -1.78 to 0.78; n = 620; low-quality evidence) and at three years (MD -0.60 kg, 95% CI -2.39 to 1.19; n = 612; low-quality evidence). Education delivered as a classroom curriculum probably decreased BMI in children at 17 months (MD -1.5 kg/m2, 95% CI -2.45 to -0.55; 1 RCT; n = 191; moderate-quality evidence). The effects were smaller at longer term follow-up (five years: MD 0 kg/m2, 95% CI -0.63 to 0.63; n = 541; seven years; MD -0.10 kg/m2, 95% CI -0.75 to 0.55; n = 576; low-quality evidence).Dietary counselling probably slightly reduced total cholesterol at 12 months compared to controls (MD -0.15 mmol/L, 95% CI -0.24 to -0.06; 1 RCT; n = 618; moderate-quality evidence), but may make little or no difference over longer time periods. Dietary counselling probably slightly decreased low-density lipoprotein (LDL) cholesterol at 12 months (MD -0.12 mmol/L, 95% CI -0.20 to -0.04; 1 RCT; n = 618, moderate-quality evidence) and at five years (MD -0.09, 95% CI -0.17 to -0.01; 1 RCT; n = 623; moderate-quality evidence), compared to controls. Dietary counselling probably made little or no difference to HDL-C at 12 months (MD -0.03 mmol/L, 95% CI -0.08 to 0.02; 1 RCT; n = 618; moderate-quality evidence), and at five years (MD -0.01 mmol/L, 95% CI -0.06 to 0.04; 1 RCT; n = 522; moderate-quality evidence). Likewise, counselling probably made little or no difference to triglycerides in children at 12 months (MD -0.01 mmol/L, 95% CI -0.08 to 0.06; 1 RCT; n = 618; moderate-quality evidence). Lower versus usual or modified fat intake may make little or no difference to height at seven years (MD -0.60 cm, 95% CI -2.06 to 0.86; 1 RCT; n = 577; low-quality evidence).Associations between total fat intake, weight and body fatness from cohort studiesOver half the cohort analyses that reported on primary outcomes suggested that as total fat intake increases, body fatness measures may move in the same direction. However, heterogeneous methods and reporting across cohort studies, and predominantly very low-quality evidence, made it difficult to draw firm conclusions and true relationships may be substantially different. AUTHORS' CONCLUSIONS We were unable to reach firm conclusions. Limited evidence from three trials that randomised children to dietary counselling or education to lower total fat intake (30% or less TE) versus usual or modified fat intake, but with no intention to reduce weight, showed small reductions in body mass index, total- and LDL-cholesterol at some time points with lower fat intake compared to controls. There were no consistent effects on weight, high-density lipoprotein (HDL) cholesterol or height. Associations in cohort studies that related total fat intake to later measures of body fatness in children were inconsistent and the quality of this evidence was mostly very low. Most studies were conducted in high-income countries, and may not be applicable in low- and middle-income settings. High-quality, longer-term studies are needed, that include low- and middle-income settings to look at both possible benefits and harms.
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Affiliation(s)
- Celeste E Naude
- Stellenbosch UniversityCentre for Evidence‐based Health Care, Division of Epidemiology and Biostatistics, Faculty of Medicine and Health SciencesFrancie van Zijl DriveCape TownSouth Africa
| | - Marianne E Visser
- Stellenbosch UniversityCentre for Evidence‐based Health Care, Division of Epidemiology and Biostatistics, Faculty of Medicine and Health SciencesFrancie van Zijl DriveCape TownSouth Africa
- South African Medical Research CouncilCochrane South AfricaCape TownSouth Africa
| | - Kim A Nguyen
- Stellenbosch UniversityCentre for Evidence‐based Health Care, Division of Epidemiology and Biostatistics, Faculty of Medicine and Health SciencesFrancie van Zijl DriveCape TownSouth Africa
| | - Solange Durao
- South African Medical Research CouncilCochrane South AfricaCape TownSouth Africa
| | - Anel Schoonees
- Stellenbosch UniversityCentre for Evidence‐based Health Care, Division of Epidemiology and Biostatistics, Faculty of Medicine and Health SciencesFrancie van Zijl DriveCape TownSouth Africa
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Naude CE, Visser ME, Nguyen KA, Durao S, Schoonees A. Effects of total fat intake on bodyweight in children. Cochrane Database Syst Rev 2018; 2:CD012960. [PMID: 29446437 PMCID: PMC6491333 DOI: 10.1002/14651858.cd012960] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND As part of efforts to prevent childhood overweight and obesity, we need to understand the relationship between total fat intake and body fatness in generally healthy children. OBJECTIVES To assess the effects of total fat intake on measures of weight and body fatness in children and young people not aiming to lose weight. SEARCH METHODS For this update we revised the previous search strategy and ran it over all years in the Cochrane Library, MEDLINE (Ovid), MEDLINE (PubMed), and Embase (Ovid) (current to 23 May 2017). No language and publication status limits were applied. We searched the World Health Organization International Clinical Trials Registry Platform and ClinicalTrials.gov for ongoing and unpublished studies (5 June 2017). SELECTION CRITERIA We included randomised controlled trials (RCTs) in children aged 24 months to 18 years, with or without risk factors for cardiovascular disease, randomised to a lower fat (30% or less of total energy (TE)) versus usual or moderate-fat diet (greater than 30%TE), without the intention to reduce weight, and assessed a measure of weight or body fatness after at least six months. We included prospective analytical cohort studies in these children if they related baseline total fat intake to weight or body fatness at least 12 months later. We duplicated inclusion decisions and resolved disagreement by discussion with other authors. DATA COLLECTION AND ANALYSIS We extracted data on participants, interventions or exposures, controls and outcomes, and trial or cohort quality characteristics, as well as data on potential effect modifiers, and assessed risk of bias for all included studies. We extracted outcome data using the following time point ranges, when available: RCTs: baseline to six months, six to 12 months, one to two years, two to five years and more than five years; cohort studies: baseline to one year, one to two years, two to five years, five to 10 years and more than 10 years. We planned to perform random-effects meta-analyses with relevant subgrouping, and sensitivity and funnel plot analyses where data allowed. MAIN RESULTS We included 24 studies comprising three parallel-group RCTs (n = 1054 randomised) and 21 prospective analytical cohort studies (about 25,059 children completed). Twenty-three were conducted in high-income countries. No meta-analyses were possible, since only one RCT reported the same outcome at each time point range for all outcomes, and cohort studies were too heterogeneous.For the RCTs, concerns about imprecision and poor reporting limited our confidence in our findings. In addition, the inclusion of hypercholesteraemic children in two trials raised concerns about applicability. Lower versus usual or modified total fat intake may have made little or no difference to weight over a six- to twelve month period (mean difference (MD) -0.50 kg, 95% confidence interval (CI) -1.78 to 0.78; 1 RCT; n = 620; low-quality evidence), nor a two- to five-year period (MD -0.60 kg, 95% CI -2.39 to 1.19; 1 RCT; n = 612; low-quality evidence). Compared to controls, lower total fat intake (30% or less TE) probably decreased BMI in children over a one- to two-year period (MD -1.5 kg/m2, 95% CI -2.45 to -0.55; 1 RCT; n = 191; moderate-quality evidence), with no other differences evident across the other time points (two to five years: MD 0.00 kg/m2, 95% CI -0.63 to 0.63; 1 RCT; n = 541; greater than five years; MD -0.10 kg/m2, 95% CI -0.75 to 0.55; 1 RCT; n = 576; low-quality evidence). Lower fat intake probably slightly reduced total cholesterol over six to 12 months compared to controls (MD -0.15 mmol/L, 95% CI -0.24 to -0.06; 1 RCT; n = 618; moderate-quality evidence), but may make little or no difference over longer time periods. Lower fat intake probably slightly decreased low-density lipoprotein (LDL) cholesterol over six to 12 months (MD -0.12 mmol/L, 95% CI -0.20 to -0.04; 1 RCT; n = 618, moderate-quality evidence) and over two to five years (MD -0.09, 95% CI -0.17 to -0.01; 1 RCT; n = 623; moderate-quality evidence), compared to controls. However, lower total fat intake probably made little or no difference to HDL-C over a six- to 12-month period (MD -0.03 mmol/L, 95% CI -0.08 to 0.02; 1 RCT; n = 618; moderate-quality evidence), nor a two- to five-year period (MD -0.01 mmol/L, 95% CI -0.06 to 0.04; 1 RCT; n = 522; moderate-quality evidence). Likewise, lower total fat intake probably made little or no difference to triglycerides in children over a six- to 12-month period (MD -0.01 mmol/L, 95% CI -0.08 to 0.06; 1 RCT; n = 618; moderate-quality evidence). Lower versus usual or modified fat intake may make little or no difference to height over more than five years (MD -0.60 cm, 95% CI -2.06 to 0.86; 1 RCT; n = 577; low-quality evidence).Over half the cohort analyses that reported on primary outcomes suggested that as total fat intake increases, body fatness measures may move in the same direction. However, heterogeneous methods and reporting across cohort studies, and predominantly very low-quality evidence, made it difficult to draw firm conclusions and true relationships may be substantially different. AUTHORS' CONCLUSIONS We were unable to reach firm conclusions. Limited evidence from three trials that randomised children to a lower total fat intake (30% or less TE) versus usual or modified fat intake, but with no intention to reduce weight, showed small reductions in body mass index, total- and LDL-cholesterol at some time points with lower fat intake compared to controls, and no consistent differences in effects on weight, high-density lipoprotein (HDL) cholesterol or height. Associations in cohort studies that related total fat intake to later measures of body fatness in children were inconsistent and the quality of this evidence was mostly very low. Twenty-three out of 24 included studies were conducted in high-income countries, and may not be applicable in low- and middle-income settings. High-quality, longer-term studies are needed, that include low- and middle-income settings and look at both possible benefits and risks.
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Affiliation(s)
- Celeste E Naude
- Stellenbosch UniversityCentre for Evidence‐based Health Care, Division of Epidemiology and Biostatistics, Faculty of Medicine and Health SciencesFrancie van Zijl DriveCape TownSouth Africa
| | | | - Kim A Nguyen
- Stellenbosch UniversityCentre for Evidence‐based Health Care, Division of Epidemiology and Biostatistics, Faculty of Medicine and Health SciencesFrancie van Zijl DriveCape TownSouth Africa
| | - Solange Durao
- South African Medical Research CouncilCochrane South AfricaCape TownSouth Africa
| | - Anel Schoonees
- Stellenbosch UniversityCentre for Evidence‐based Health Care, Division of Epidemiology and Biostatistics, Faculty of Medicine and Health SciencesFrancie van Zijl DriveCape TownSouth Africa
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Wolfenden L, Nathan NK, Sutherland R, Yoong SL, Hodder RK, Wyse RJ, Delaney T, Grady A, Fielding A, Tzelepis F, Clinton‐McHarg T, Parmenter B, Butler P, Wiggers J, Bauman A, Milat A, Booth D, Williams CM. Strategies for enhancing the implementation of school-based policies or practices targeting risk factors for chronic disease. Cochrane Database Syst Rev 2017; 11:CD011677. [PMID: 29185627 PMCID: PMC6486103 DOI: 10.1002/14651858.cd011677.pub2] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND A number of school-based policies or practices have been found to be effective in improving child diet and physical activity, and preventing excessive weight gain, tobacco or harmful alcohol use. Schools, however, frequently fail to implement such evidence-based interventions. OBJECTIVES The primary aims of the review are to examine the effectiveness of strategies aiming to improve the implementation of school-based policies, programs or practices to address child diet, physical activity, obesity, tobacco or alcohol use.Secondary objectives of the review are to: Examine the effectiveness of implementation strategies on health behaviour (e.g. fruit and vegetable consumption) and anthropometric outcomes (e.g. BMI, weight); describe the impact of such strategies on the knowledge, skills or attitudes of school staff involved in implementing health-promoting policies, programs or practices; describe the cost or cost-effectiveness of such strategies; and describe any unintended adverse effects of strategies on schools, school staff or children. SEARCH METHODS All electronic databases were searched on 16 July 2017 for studies published up to 31 August 2016. We searched the following electronic databases: Cochrane Library including the Cochrane Central Register of Controlled Trials (CENTRAL); MEDLINE; MEDLINE In-Process & Other Non-Indexed Citations; Embase Classic and Embase; PsycINFO; Education Resource Information Center (ERIC); Cumulative Index to Nursing and Allied Health Literature (CINAHL); Dissertations and Theses; and SCOPUS. We screened reference lists of all included trials for citations of other potentially relevant trials. We handsearched all publications between 2011 and 2016 in two specialty journals (Implementation Science and Journal of Translational Behavioral Medicine) and conducted searches of the WHO International Clinical Trials Registry Platform (ICTRP) (http://apps.who.int/trialsearch/) as well as the US National Institutes of Health registry (https://clinicaltrials.gov). We consulted with experts in the field to identify other relevant research. SELECTION CRITERIA 'Implementation' was defined as the use of strategies to adopt and integrate evidence-based health interventions and to change practice patterns within specific settings. We included any trial (randomised or non-randomised) conducted at any scale, with a parallel control group that compared a strategy to implement policies or practices to address diet, physical activity, overweight or obesity, tobacco or alcohol use by school staff to 'no intervention', 'usual' practice or a different implementation strategy. DATA COLLECTION AND ANALYSIS Citation screening, data extraction and assessment of risk of bias was performed by review authors in pairs. Disagreements between review authors were resolved via consensus, or if required, by a third author. Considerable trial heterogeneity precluded meta-analysis. We narratively synthesised trial findings by describing the effect size of the primary outcome measure for policy or practice implementation (or the median of such measures where a single primary outcome was not stated). MAIN RESULTS We included 27 trials, 18 of which were conducted in the USA. Nineteen studies employed randomised controlled trial (RCT) designs. Fifteen trials tested strategies to implement healthy eating policies, practice or programs; six trials tested strategies targeting physical activity policies or practices; and three trials targeted tobacco policies or practices. Three trials targeted a combination of risk factors. None of the included trials sought to increase the implementation of interventions to delay initiation or reduce the consumption of alcohol. All trials examined multi-strategic implementation strategies and no two trials examined the same combinations of implementation strategies. The most common implementation strategies included educational materials, educational outreach and educational meetings. For all outcomes, the overall quality of evidence was very low and the risk of bias was high for the majority of trials for detection and performance bias.Among 13 trials reporting dichotomous implementation outcomes-the proportion of schools or school staff (e.g. classes) implementing a targeted policy or practice-the median unadjusted (improvement) effect sizes ranged from 8.5% to 66.6%. Of seven trials reporting the percentage of a practice, program or policy that had been implemented, the median unadjusted effect (improvement), relative to the control ranged from -8% to 43%. The effect, relative to control, reported in two trials assessing the impact of implementation strategies on the time per week teachers spent delivering targeted policies or practices ranged from 26.6 to 54.9 minutes per week. Among trials reporting other continuous implementation outcomes, findings were mixed. Four trials were conducted of strategies that sought to achieve implementation 'at scale', that is, across samples of at least 50 schools, of which improvements in implementation were reported in three trials.The impact of interventions on student health behaviour or weight status were mixed. Three of the eight trials with physical activity outcomes reported no significant improvements. Two trials reported reductions in tobacco use among intervention relative to control. Seven of nine trials reported no between-group differences on student overweight, obesity or adiposity. Positive improvements in child dietary intake were generally reported among trials reporting these outcomes. Three trials assessed the impact of implementation strategies on the attitudes of school staff and found mixed effects. Two trials specified in the study methods an assessment of potential unintended adverse effects, of which, they reported none. One trial reported implementation support did not significantly increase school revenue or expenses and another, conducted a formal economic evaluation, reporting the intervention to be cost-effective. Trial heterogeneity, and the lack of consistent terminology describing implementation strategies, were important limitations of the review. AUTHORS' CONCLUSIONS Given the very low quality of the available evidence, it is uncertain whether the strategies tested improve implementation of the targeted school-based policies or practices, student health behaviours, or the knowledge or attitudes of school staff. It is also uncertain if strategies to improve implementation are cost-effective or if they result in unintended adverse consequences. Further research is required to guide efforts to facilitate the translation of evidence into practice in this setting.
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Novel measures of inflammation and insulin resistance are related to obesity and fitness in a diverse sample of 11-14 year olds: The HEALTHY Study. Int J Obes (Lond) 2016; 40:1157-63. [PMID: 27143035 PMCID: PMC4935612 DOI: 10.1038/ijo.2016.84] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 03/01/2016] [Accepted: 04/19/2016] [Indexed: 12/25/2022]
Abstract
Background GlycA is a novel serum marker of systemic inflammation. There is no information on GlycA in pediatric populations, how it differs by gender or its association with body mass index (BMI) or fitness. LP-IR is a serum measure of insulin resistance which is related to changes in BMI group in adolescents, but its relationship with fitness is unknown. The current study examined the independent associations between fitness and BMI with GlycA and LP-IR among US adolescents. Methods Participants were 1664 US adolescents from the HEALTHY study with complete 6th and 8th grade BMI, fitness and blood data. GlycA and LP-IR were measured by NMR spectroscopy. Three BMI groups and three fitness groups were created. Linear mixed models examined associations between GlycA, LP-IR, fitness and BMI. Results LP-IR decreased between 6th and 8th grade. GlycA increased among girls but decreased among boys. At 8th grade, median GlycA values were 27 (7.6%) μmol/L higher (381 versus 354) for girls than boys. Median GlycA 6th grade values were 9% higher in obese girls than healthy weight girls. Overall there was strong evidence (p<0.001) that GlycA was higher in higher BMI groups. Fitness was negatively associated with GlycA (r = −0.37 and −0.35) and LP-IR (r = −0.34 and − 0.18) at the 6th and 8th grade assessments. As BMI category increased and fitness category decreased, GlycA and LP-IR levels increased. Lowest GlycA was found in the low BMI/high fitness group. Conclusions GlycA was associated with BMI and fitness among in US adolescents. These findings suggest that there are independent effects for BMI and fitness group with both GlycA and LP-IR. Future studies should validate the role of GlycA and LP-IR to evaluate the effects of interventions to modify obesity and fitness in order to improve systemic inflammation and insulin resistance.
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Stephens L, Byker Shanks C. K-12 School Food Service Staff Training Interventions: A Review of the Literature. THE JOURNAL OF SCHOOL HEALTH 2015; 85:825-832. [PMID: 26522171 DOI: 10.1111/josh.12338] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 04/01/2015] [Accepted: 05/07/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND School food service professionals are vital to implementing national nutrition standards in school meal programs. Appropriate and effective training for these professionals may be one key to producing healthful meals that students are excited to eat and also meet United States Department of Agriculture (USDA) nutrient guidelines. A systematic literature review was conducted to understand the scope of interventions conducted with food service staff. METHODS PubMed, Web of Knowledge, and Science Direct databases were searched for articles detailing school food service training interventions in K-12 school settings within the United States. RESULTS Of 2341 articles retrieved, 17 articles describing 14 food service training interventions met the inclusion criteria. While food service staff training was an important component of many comprehensive school health and school meal interventions, there were few studies that specifically addressed school food service staff trainings. Although some best practices can be concluded from the current literature, major gaps in knowledge about effective school food service training interventions and validated research tools remain. CONCLUSIONS As new professional standards are mandated by the USDA, a more thorough evaluation and understanding of best practices is vital to maximize the effectiveness of food service staff training.
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Affiliation(s)
- Lacy Stephens
- National Farm to School Network, P.M.B. #104, 8770 West Bryn Mawr Ave, Suite 1300, Chicago, IL 60631-3515..
| | - Carmen Byker Shanks
- Food and Nutrition and Sustainable Food Systems, Montana State University, 121 PE Complex, Bozeman, MT 59717-3360..
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Hollands GJ, Shemilt I, Marteau TM, Jebb SA, Lewis HB, Wei Y, Higgins JPT, Ogilvie D. Portion, package or tableware size for changing selection and consumption of food, alcohol and tobacco. Cochrane Database Syst Rev 2015; 2015:CD011045. [PMID: 26368271 PMCID: PMC4579823 DOI: 10.1002/14651858.cd011045.pub2] [Citation(s) in RCA: 144] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Overeating and harmful alcohol and tobacco use have been linked to the aetiology of various non-communicable diseases, which are among the leading global causes of morbidity and premature mortality. As people are repeatedly exposed to varying sizes and shapes of food, alcohol and tobacco products in environments such as shops, restaurants, bars and homes, this has stimulated public health policy interest in product size and shape as potential targets for intervention. OBJECTIVES 1) To assess the effects of interventions involving exposure to different sizes or sets of physical dimensions of a portion, package, individual unit or item of tableware on unregulated selection or consumption of food, alcohol or tobacco products in adults and children.2) To assess the extent to which these effects may be modified by study, intervention and participant characteristics. SEARCH METHODS We searched CENTRAL, MEDLINE, EMBASE, PsycINFO, eight other published or grey literature databases, trial registries and key websites up to November 2012, followed by citation searches and contacts with study authors. This original search identified eligible studies published up to July 2013, which are fully incorporated into the review. We conducted an updated search up to 30 January 2015 but further eligible studies are not yet fully incorporated due to their minimal potential to change the conclusions. SELECTION CRITERIA Randomised controlled trials with between-subjects (parallel-group) or within-subjects (cross-over) designs, conducted in laboratory or field settings, in adults or children. Eligible studies compared at least two groups of participants, each exposed to a different size or shape of a portion of a food (including non-alcoholic beverages), alcohol or tobacco product, its package or individual unit size, or of an item of tableware used to consume it, and included a measure of unregulated selection or consumption of food, alcohol or tobacco. DATA COLLECTION AND ANALYSIS We applied standard Cochrane methods to select eligible studies for inclusion and to collect data and assess risk of bias. We calculated study-level effect sizes as standardised mean differences (SMDs) between comparison groups, measured as quantities selected or consumed. We combined these results using random-effects meta-analysis models to estimate summary effect sizes (SMDs with 95% confidence intervals (CIs)) for each outcome for size and shape comparisons. We rated the overall quality of evidence using the GRADE system. Finally, we used meta-regression analysis to investigate statistical associations between summary effect sizes and variant study, intervention or participant characteristics. MAIN RESULTS The current version of this review includes 72 studies, published between 1978 and July 2013, assessed as being at overall unclear or high risk of bias with respect to selection and consumption outcomes. Ninety-six per cent of included studies (69/72) manipulated food products and 4% (3/72) manipulated cigarettes. No included studies manipulated alcohol products. Forty-nine per cent (35/72) manipulated portion size, 14% (10/72) package size and 21% (15/72) tableware size or shape. More studies investigated effects among adults (76% (55/72)) than children and all studies were conducted in high-income countries - predominantly in the USA (81% (58/72)). Sources of funding were reported for the majority of studies, with no evidence of funding by agencies with possible commercial interests in their results.A meta-analysis of 86 independent comparisons from 58 studies (6603 participants) found a small to moderate effect of portion, package, individual unit or tableware size on consumption of food (SMD 0.38, 95% CI 0.29 to 0.46), providing moderate quality evidence that exposure to larger sizes increased quantities of food consumed among children (SMD 0.21, 95% CI 0.10 to 0.31) and adults (SMD 0.46, 95% CI 0.40 to 0.52). The size of this effect suggests that, if sustained reductions in exposure to larger-sized food portions, packages and tableware could be achieved across the whole diet, this could reduce average daily energy consumed from food by between 144 and 228 kcal (8.5% to 13.5% from a baseline of 1689 kcal) among UK children and adults. A meta-analysis of six independent comparisons from three studies (108 participants) found low quality evidence for no difference in the effect of cigarette length on consumption (SMD 0.25, 95% CI -0.14 to 0.65).One included study (50 participants) estimated a large effect on consumption of exposure to differently shaped tableware (SMD 1.17, 95% CI 0.57 to 1.78), rated as very low quality evidence that exposure to shorter, wider bottles (versus taller, narrower bottles) increased quantities of water consumed by young adult participants.A meta-analysis of 13 independent comparisons from 10 studies (1164 participants) found a small to moderate effect of portion or tableware size on selection of food (SMD 0.42, 95% CI 0.24 to 0.59), rated as moderate quality evidence that exposure to larger sizes increased the quantities of food people selected for subsequent consumption. This effect was present among adults (SMD 0.55, 95% CI 0.35 to 0.75) but not children (SMD 0.14, 95% CI -0.06 to 0.34).In addition, a meta-analysis of three independent comparisons from three studies (232 participants) found a very large effect of exposure to differently shaped tableware on selection of non-alcoholic beverages (SMD 1.47, 95% CI 0.52 to 2.43), rated as low quality evidence that exposure to shorter, wider (versus taller, narrower) glasses or bottles increased the quantities selected for subsequent consumption among adults (SMD 2.31, 95% CI 1.79 to 2.83) and children (SMD 1.03, 95% CI 0.41 to 1.65). AUTHORS' CONCLUSIONS This review found that people consistently consume more food and drink when offered larger-sized portions, packages or tableware than when offered smaller-sized versions. This suggests that policies and practices that successfully reduce the size, availability and appeal of larger-sized portions, packages, individual units and tableware can contribute to meaningful reductions in the quantities of food (including non-alcoholic beverages) people select and consume in the immediate and short term. However, it is uncertain whether reducing portions at the smaller end of the size range can be as effective in reducing food consumption as reductions at the larger end of the range. We are unable to highlight clear implications for tobacco or alcohol policy due to identified gaps in the current evidence base.
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Affiliation(s)
- Gareth J Hollands
- University of CambridgeBehaviour and Health Research UnitForvie SiteRobinson WayCambridgeUKCB2 0SR
| | - Ian Shemilt
- University College LondonEPPI‐Centre10 Woburn SquareLondonUKWC1H 0NR
| | - Theresa M Marteau
- University of CambridgeBehaviour and Health Research UnitForvie SiteRobinson WayCambridgeUKCB2 0SR
| | - Susan A Jebb
- University of OxfordNuffield Department of Primary Care Health SciencesRadcliffe Observatory QuarterWoodstock RoadOxfordOxfordshireUKOX2 6GG
| | - Hannah B Lewis
- MRC Human Nutrition ResearchElsie Widdowson Laboratory, 120 Fulbourn RoadCambridgeUKCB1 9NL
| | - Yinghui Wei
- University of PlymouthCentre for Mathematical Sciences, School of Computing, Electronics and MathematicsPlymouthUK
| | - Julian P T Higgins
- University of BristolPopulation Health Sciences, Bristol Medical SchoolCanynge Hall39 Whatley RoadBristolUKBS8 2PS
| | - David Ogilvie
- University of CambridgeMRC Epidemiology UnitBox 285Cambridge Biomedical CampusCambridgeUKCB2 0QQ
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School factors as barriers to and facilitators of a preventive intervention for pediatric type 2 diabetes. Transl Behav Med 2014; 4:131-40. [PMID: 24904696 DOI: 10.1007/s13142-013-0226-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
School-based interventions are essential to prevent pediatric obesity and type 2 diabetes. School environmental factors influence implementation of these interventions. This article examines how school factors acted as barriers to and facilitators of the HEALTHY intervention. The HEALTHY study was a cluster-randomized trial of a multicomponent intervention implemented in 21 schools. Interview data were analyzed to identify barriers and facilitators. Barriers included teacher frustration that intervention activities detracted from tested subjects, student resistance and misbehavior, classroom management problems, communication equipment problems, lack of teacher/staff engagement, high cost and limited availability of nutritious products, inadequate facility space, and large class sizes. Facilitators included teacher/staff engagement, effective classroom management, student engagement, schools with direct control over food service, support from school leaders, and adequate facilities and equipment. Contextual barriers and facilitators must be taken into account in the design and implementation of school-based health interventions.
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20
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Jago R, Drews KL, Otvos JD, Foster GD, Marcus MD, Buse JB, Mietus-Snyder M, Willi SM. Effect of relative weight group change on nuclear magnetic resonance spectroscopy derived lipoprotein particle size and concentrations among adolescents. J Pediatr 2014; 164:1091-1098.e3. [PMID: 24508445 PMCID: PMC3992168 DOI: 10.1016/j.jpeds.2013.12.029] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Revised: 10/24/2013] [Accepted: 12/13/2013] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To examine whether longitudinal changes in relative weight category (as indicated by change in body mass index [BMI] classification group) were associated with changes in nuclear magnetic resonance (NMR)-derived lipoprotein particles among US youth. STUDY DESIGN Secondary analysis of data from a clustered randomized controlled trial. BMI and fasting blood samples were obtained from 2069 participants at the start of the 6th grade and end of the 8th grade. BMI was categorized as normal weight, overweight, or obese at both time points. Lipoprotein particle profiles were measured with NMR spectroscopy at both time points. Regression models were used to examine changes in relative weight group and change in lipoprotein variables. RESULTS A total of 38% of participants changed relative weight category (BMI group) during the 2.5-year study period. Low-density lipoprotein (LDL) cholesterol and non-high-density lipoprotein (HDL) cholesterol decreased almost universally, but more with improved BMI category. There were adverse effects on LDL size and total LDL particles, HDL size, and cholesterol for participants who remained obese or whose relative weight group worsened. Changes in relative category had no impact on HDL particles. CONCLUSION Improvement in relative weight group from 6th to 8th grade was associated with favorable changes in non-HDL cholesterol, very low-density lipoprotein size, LDL size, HDL size, and LDL particles but had no effect on HDL particles. Findings indicate that an improvement in relative weight group between 6th and 8th grade had an effect on NMR-derived particles sizes and concentrations among a large group of adolescents, which overrepresented low-income minorities.
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Affiliation(s)
- Russell Jago
- Center for Exercise, Nutrition & Health, School for Policy Studies, University of Bristol, Bristol, United Kingdom.
| | | | | | - Gary D. Foster
- Center for Obesity Research and Education, Temple University
| | | | | | - Michele Mietus-Snyder
- George Washington University School of Medicine & Health Sciences & Children’s National Medical Center
| | - Steven M. Willi
- Children’s Hospital of Philadelphia & Perelman School of Medicine of the University of Pennsylvania
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21
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Langford R, Bonell CP, Jones HE, Pouliou T, Murphy SM, Waters E, Komro KA, Gibbs LF, Magnus D, Campbell R. The WHO Health Promoting School framework for improving the health and well-being of students and their academic achievement. Cochrane Database Syst Rev 2014; 2014:CD008958. [PMID: 24737131 PMCID: PMC11214127 DOI: 10.1002/14651858.cd008958.pub2] [Citation(s) in RCA: 272] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND The World Health Organization's (WHO's) Health Promoting Schools (HPS) framework is an holistic, settings-based approach to promoting health and educational attainment in school. The effectiveness of this approach has not been previously rigorously reviewed. OBJECTIVES To assess the effectiveness of the Health Promoting Schools (HPS) framework in improving the health and well-being of students and their academic achievement. SEARCH METHODS We searched the following electronic databases in January 2011 and again in March and April 2013: Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, EMBASE, PsycINFO, CINAHL, Campbell Library, ASSIA, BiblioMap, CAB Abstracts, IBSS, Social Science Citation Index, Sociological Abstracts, TRoPHI, Global Health Database, SIGLE, Australian Education Index, British Education Index, Education Resources Information Centre, Database of Education Research, Dissertation Express, Index to Theses in Great Britain and Ireland, ClinicalTrials.gov, Current controlled trials, and WHO International Clinical Trials Registry Platform. We also searched relevant websites, handsearched reference lists, and used citation tracking to identify other relevant articles. SELECTION CRITERIA We included cluster-randomised controlled trials where randomisation took place at the level of school, district or other geographical area. Participants were children and young people aged four to 18 years, attending schools or colleges. In this review, we define HPS interventions as comprising the following three elements: input to the curriculum; changes to the school's ethos or environment or both; and engagement with families or communities, or both. We compared this intervention against schools that implemented either no intervention or continued with their usual practice, or any programme that included just one or two of the above mentioned HPS elements. DATA COLLECTION AND ANALYSIS At least two review authors identified relevant trials, extracted data, and assessed risk of bias in the trials. We grouped different types of interventions according to the health topic targeted or the approach used, or both. Where data permitted, we performed random-effects meta-analyses to provide a summary of results across studies. MAIN RESULTS We included 67 eligible cluster trials, randomising 1443 schools or districts. This is made up of 1345 schools and 98 districts. The studies tackled a range of health issues: physical activity (4), nutrition (12), physical activity and nutrition combined (18), bullying (7), tobacco (5), alcohol (2), sexual health (2), violence (2), mental health (2), hand-washing (2), multiple risk behaviours (7), cycle-helmet use (1), eating disorders (1), sun protection (1), and oral health (1). The quality of evidence overall was low to moderate as determined by the GRADE approach. 'Risk of bias' assessments identified methodological limitations, including heavy reliance on self-reported data and high attrition rates for some studies. In addition, there was a lack of long-term follow-up data for most studies.We found positive effects for some interventions for: body mass index (BMI), physical activity, physical fitness, fruit and vegetable intake, tobacco use, and being bullied. Intervention effects were generally small but have the potential to produce public health benefits at the population level. We found little evidence of effectiveness for standardised body mass index (zBMI) and no evidence of effectiveness for fat intake, alcohol use, drug use, mental health, violence and bullying others; however, only a small number of studies focused on these latter outcomes. It was not possible to meta-analyse data on other health outcomes due to lack of data. Few studies provided details on adverse events or outcomes related to the interventions. In addition, few studies included any academic, attendance or school-related outcomes. We therefore cannot draw any clear conclusions as to the effectiveness of this approach for improving academic achievement. AUTHORS' CONCLUSIONS The results of this review provide evidence for the effectiveness of some interventions based on the HPS framework for improving certain health outcomes but not others. More well-designed research is required to establish the effectiveness of this approach for other health topics and academic achievement.
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Affiliation(s)
- Rebecca Langford
- University of BristolSchool of Social and Community MedicineCanynge Hall39 Whatley RoadBristolUKBS8 2PS
| | - Christopher P Bonell
- Institute of Education, University of LondonSocial Science Research Unit18 Woburn SquareLondonLondonUKWC1H 0NR
| | - Hayley E Jones
- University of BristolSchool of Social and Community MedicineCanynge Hall39 Whatley RoadBristolUKBS8 2PS
| | - Theodora Pouliou
- University of BristolSchool of Social and Community MedicineCanynge Hall39 Whatley RoadBristolUKBS8 2PS
| | - Simon M Murphy
- Cardiff UniversityCardiff School of Social Sciences1‐3 Museum PlaceCardiffSouth GlamorganUKCF10 3BD
| | - Elizabeth Waters
- The University of MelbourneJack Brockhoff Child Health and Wellbeing Program, Melbourne School of Population and Global HealthLevel 5/207 Bouverie StParkvilleVICAustralia3052
| | - Kelli A Komro
- University of FloridaHealth Outcomes and Policy and Institute for Child Health PolicyPO Box 100177GainesvilleFloridaUSA32610‐0177
| | - Lisa F Gibbs
- The University of MelbourneJack Brockhoff Child Health and Wellbeing Program, Melbourne School of Population and Global HealthLevel 5/207 Bouverie StParkvilleVICAustralia3052
| | - Daniel Magnus
- University of BristolSchool of Social and Community MedicineCanynge Hall39 Whatley RoadBristolUKBS8 2PS
| | - Rona Campbell
- University of BristolSchool of Social and Community MedicineCanynge Hall39 Whatley RoadBristolUKBS8 2PS
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Marcus MD, Foster GD, ghormli LE. Stability of relative weight category and cardiometabolic risk factors among moderately and severely obese middle school youth. Obesity (Silver Spring) 2014; 22:1118-25. [PMID: 24376009 PMCID: PMC3968217 DOI: 10.1002/oby.20688] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Accepted: 12/17/2013] [Indexed: 01/15/2023]
Abstract
OBJECTIVE To examine the stability of severe pediatric obesity relative to moderate obesity and associated changes in cardiometabolic risk from the beginning of 6th to the end of 8th grade. METHODS Participants in HEALTHY, a multi-site, cluster randomized school-based study designed to mitigate risk for type 2 diabetes, completed standardized assessments of height, weight, glucose, insulin, lipids, and blood pressure at the beginning of 6th grade and the end of 8th grade. Youth were classified as moderately obese (100-119% of the 95th percentile of BMI for age and gender) or severely obese (≥120% of the 95th percentile of BMI for age and gender). Generalized linear mixed models (GLMM) that controlled for relevant covariables were used to examine the relation between baseline demographic and cardiometabolic risk factors and BMI status, as well as changes in relative weight category and risk factors during middle school. RESULTS Severe obesity was more likely to endure over the course of middle school than was moderate obesity, and was associated with significantly higher levels of cardiometabolic risk. CONCLUSIONS Research with a specific focus on understanding, preventing, and treating severe obesity in children is warranted.
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Affiliation(s)
- Marsha D. Marcus
- Department of Psychiatry, University of Pittsburgh School of Medicine
| | - Gary D. Foster
- Center for Obesity Research and Education, Temple University
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Cohen JFW, Rimm EB, Austin SB, Hyatt RR, Kraak VI, Economos CD. A food service intervention improves whole grain access at lunch in rural elementary schools. THE JOURNAL OF SCHOOL HEALTH 2014; 84:212-219. [PMID: 24443783 PMCID: PMC4540181 DOI: 10.1111/josh.12133] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Revised: 01/20/2013] [Accepted: 03/03/2013] [Indexed: 06/03/2023]
Abstract
BACKGROUND Whole grain (WG) options are often limited in schools, which may impact rural, low-income students who rely on school meals for a substantial portion of their food intake. This study examined the changes in the availability and quantity of WG and refined grain foods offered in schools participating in the Creating Healthy, Active and Nurturing Growing-up Environments (CHANGE) study, a randomized, controlled intervention among rural communities (4 intervention and 4 control). METHODS Foods were assessed using production records, recipes, and nutrition labels from breakfast and lunch over 1 week during fall 2008 and spring 2009. Key informant interviews were conducted with school food service directors in the spring 2009. RESULTS The CHANGE intervention schools significantly increased the average percent of school days WGs were offered (p = .047) and the amount of WGs offered/food item (ounces) at lunch compared with control schools (p = .02). There was a significant decrease in the percent of students with access to refined grains at lunch compared with control schools (p = .049), although there were no significant differences in WG availability during breakfast. CONCLUSIONS The CHANGE schools improved WG availability, enabling student's WG consumption to be closer to national recommendations.
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Affiliation(s)
- Juliana F. W. Cohen
- Department of Nutrition, Harvard School of Public Health, 677 Huntington Avenue, Boston, MA 02115
| | - Eric B. Rimm
- Department of Nutrition, Harvard School of Public Health, 677 Huntington Avenue, Boston, MA 02115; Department of Epidemiology, Harvard School of Public Health, 677 Huntington Avenue, Boston, MA 02115
| | - S. Bryn Austin
- Division of Adolescent and Young Adult Medicine, Children's Hospital Boston and Harvard Medical School, 300 Longwood Avenue, Boston, MA 02115
| | - Raymond R. Hyatt
- Department of Public Health and Community Medicine, Tufts University School of Medicine, 136 Harrison Avenue, Boston, MA 02111
| | - Vivica I. Kraak
- Deakin Population Health Strategic Research Centre, School of Health and Social Development, Deakin University, Melbourne Burwood Campus, 221 Burwood Highway, Burwood, Victoria 3125, Australia
| | - Christina D. Economos
- John Hancock Research Center on Physical Activity, Nutrition and Obesity Prevention, Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy, Tufts University, 50 Harrison Avenue, Boston, MA 02111
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Volpe SL, Hall WJ, Steckler A, Schneider M, Thompson D, Mobley C, Pham T, El ghormli L. Process evaluation results from the HEALTHY nutrition intervention to modify the total school food environment. HEALTH EDUCATION RESEARCH 2013; 28:970-978. [PMID: 24107856 PMCID: PMC3888190 DOI: 10.1093/her/cyt096] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Accepted: 09/10/2013] [Indexed: 06/02/2023]
Abstract
The process evaluation of HEALTHY, a large multi-center trial to decrease type 2 diabetes mellitus in middle school children, monitored the implementation of the intervention to ascertain the extent that components were delivered and received as intended. The purpose of this article is to report the process evaluation findings concerning the extent to which the HEALTHY nutrition intervention was implemented during the HEALTHY trial. Overall, the observed fidelity of implementing nutrition strategies improved from baseline to the end of the study. By the last semester, all but two nutrition process evaluation goals were met. The most challenging goal to implement was serving high fiber foods, including grain-based foods and legumes. The easiest goals to implement were lowering the fat content of foods offered and offering healthier beverages. The most challenging barriers experienced by research dietitians and food service staff were costs, availability of foods and student acceptance. Forming strong relationships between the research dietitians and food service staff was identified as a key strategy to meet HEALTHY nutrition goals.
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Affiliation(s)
- S. L. Volpe
- Department of Nutrition Sciences, College of Nursing and Health Professions, Drexel University, PA 19102, School of Nursing, Health Behavior Department, School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, Department of Planning, Policy and Design, School of Social Ecology, University of California at Irvine, Irvine, CA 92697, USDA/ARS Children’s Nutrition Research Center, Baylor College of Medicine, Houston, TX 77030, Department of Biomedical Sciences, School of Dental Medicine, University of Nevada Las Vegas, Las Vegas, NV 89154 and Biostatistics Center, The George Washington University, Rockville, MD 20852, USA
| | - W. J. Hall
- Department of Nutrition Sciences, College of Nursing and Health Professions, Drexel University, PA 19102, School of Nursing, Health Behavior Department, School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, Department of Planning, Policy and Design, School of Social Ecology, University of California at Irvine, Irvine, CA 92697, USDA/ARS Children’s Nutrition Research Center, Baylor College of Medicine, Houston, TX 77030, Department of Biomedical Sciences, School of Dental Medicine, University of Nevada Las Vegas, Las Vegas, NV 89154 and Biostatistics Center, The George Washington University, Rockville, MD 20852, USA
| | - A. Steckler
- Department of Nutrition Sciences, College of Nursing and Health Professions, Drexel University, PA 19102, School of Nursing, Health Behavior Department, School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, Department of Planning, Policy and Design, School of Social Ecology, University of California at Irvine, Irvine, CA 92697, USDA/ARS Children’s Nutrition Research Center, Baylor College of Medicine, Houston, TX 77030, Department of Biomedical Sciences, School of Dental Medicine, University of Nevada Las Vegas, Las Vegas, NV 89154 and Biostatistics Center, The George Washington University, Rockville, MD 20852, USA
| | - M. Schneider
- Department of Nutrition Sciences, College of Nursing and Health Professions, Drexel University, PA 19102, School of Nursing, Health Behavior Department, School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, Department of Planning, Policy and Design, School of Social Ecology, University of California at Irvine, Irvine, CA 92697, USDA/ARS Children’s Nutrition Research Center, Baylor College of Medicine, Houston, TX 77030, Department of Biomedical Sciences, School of Dental Medicine, University of Nevada Las Vegas, Las Vegas, NV 89154 and Biostatistics Center, The George Washington University, Rockville, MD 20852, USA
| | - D. Thompson
- Department of Nutrition Sciences, College of Nursing and Health Professions, Drexel University, PA 19102, School of Nursing, Health Behavior Department, School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, Department of Planning, Policy and Design, School of Social Ecology, University of California at Irvine, Irvine, CA 92697, USDA/ARS Children’s Nutrition Research Center, Baylor College of Medicine, Houston, TX 77030, Department of Biomedical Sciences, School of Dental Medicine, University of Nevada Las Vegas, Las Vegas, NV 89154 and Biostatistics Center, The George Washington University, Rockville, MD 20852, USA
| | - C. Mobley
- Department of Nutrition Sciences, College of Nursing and Health Professions, Drexel University, PA 19102, School of Nursing, Health Behavior Department, School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, Department of Planning, Policy and Design, School of Social Ecology, University of California at Irvine, Irvine, CA 92697, USDA/ARS Children’s Nutrition Research Center, Baylor College of Medicine, Houston, TX 77030, Department of Biomedical Sciences, School of Dental Medicine, University of Nevada Las Vegas, Las Vegas, NV 89154 and Biostatistics Center, The George Washington University, Rockville, MD 20852, USA
| | - T. Pham
- Department of Nutrition Sciences, College of Nursing and Health Professions, Drexel University, PA 19102, School of Nursing, Health Behavior Department, School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, Department of Planning, Policy and Design, School of Social Ecology, University of California at Irvine, Irvine, CA 92697, USDA/ARS Children’s Nutrition Research Center, Baylor College of Medicine, Houston, TX 77030, Department of Biomedical Sciences, School of Dental Medicine, University of Nevada Las Vegas, Las Vegas, NV 89154 and Biostatistics Center, The George Washington University, Rockville, MD 20852, USA
| | - L. El ghormli
- Department of Nutrition Sciences, College of Nursing and Health Professions, Drexel University, PA 19102, School of Nursing, Health Behavior Department, School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, Department of Planning, Policy and Design, School of Social Ecology, University of California at Irvine, Irvine, CA 92697, USDA/ARS Children’s Nutrition Research Center, Baylor College of Medicine, Houston, TX 77030, Department of Biomedical Sciences, School of Dental Medicine, University of Nevada Las Vegas, Las Vegas, NV 89154 and Biostatistics Center, The George Washington University, Rockville, MD 20852, USA
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Hernandez AE, Marcus MD, Hirst K, Faith MS, Goldberg L, Treviño RP. Impact of implementation and conduct of the HEALTHY primary prevention trial on student performance. Am J Health Promot 2013; 29:55-8. [PMID: 24200256 DOI: 10.4278/ajhp.130131-arb-53] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
PURPOSE To determine whether a school-wide intervention program to reduce risk factors for type 2 diabetes (T2D) affected student achievement, rates of disciplinary actions, and attendance rates. DESIGN The HEALTHY primary prevention trial was designed to evaluate a comprehensive school-based intervention to reduce factors for T2D, especially overweight and obesity. Students were followed up from beginning of sixth grade (Fall 2006) through end of eighth grade (Spring 2009). SETTING Forty-two middle schools at seven U.S. sites. SUBJECTS Schools were randomized in equal numbers at each site to intervention (21 schools, 2307 students) or control (21 schools, 2296 students). Intervention . An integrated school-wide program that focused on (1) foods and beverages, (2) physical education, (3) classroom-based behavior change and education, and (4) social marketing communication and promotional campaigns. MEASURES Aggregate (grade- and school-wide) test performance (passing rate), attendance, and referrals for disciplinary actions. ANALYSIS Descriptive statistics and tests of intervention versus control using mixed linear models methods to adjust for the clustering of students within schools. RESULTS There were no differences between intervention and control schools in test performance for mathematics (p = .7835) or reading (p = .6387), attendance (p = .5819), or referrals for disciplinary action (p = .8671). CONCLUSION The comprehensive HEALTHY intervention and associated research procedures did not negatively impact student achievement test scores, attendance, or referrals for disciplinary action.
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Cohen JFW, Richardson S, Austin SB, Economos CD, Rimm EB. School lunch waste among middle school students: nutrients consumed and costs. Am J Prev Med 2013; 44:114-21. [PMID: 23332326 PMCID: PMC3788640 DOI: 10.1016/j.amepre.2012.09.060] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Revised: 07/30/2012] [Accepted: 09/27/2012] [Indexed: 11/30/2022]
Abstract
BACKGROUND The National School Lunch Program has been guided by modest nutrient standards, and the palatability of meals, which drives consumption, receives inadequate attention. School food waste can have important nutritional and cost implications for policymakers, students, and their families. PURPOSE Nutrient losses and economic costs associated with school meal waste were examined. The study also assessed if school foods served were valid proxies for foods consumed by students. METHODS Plate waste measurements were collected from middle school students in Boston attending two Chef Initiative schools (n=1609) and two control schools (n=1440) during a 2-year pilot study (2007-2009) in which a professional chef trained cafeteria staff to make healthier school meals. The costs associated with food waste were calculated and the percentage of foods consumed was compared with a gold standard of 85% consumption. Analyses were conducted in 2010-2011. RESULTS Overall, students consumed less than the required/recommended levels of nutrients. An estimated $432,349 of food (26.1% of the total food budget) was discarded by middle school students annually at lunch in these Boston middle schools. For most meal components, substantially less than 85% was consumed. CONCLUSIONS There is substantial food waste among middle school students in Boston. Overall, students' nutrient consumption levels were below school meal standards, and foods served were not valid proxies for foods consumed. The costs associated with discarded foods are high; if translated nationally for school lunches, roughly $1,238,846,400 annually is wasted. Students might benefit if additional focus were given to the quality and palatability of school meals.
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Affiliation(s)
- Juliana F W Cohen
- Department of Nutrition, Harvard School of Public Health, Boston, Massachusetts 02115, USA.
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Marcus MD, Hirst K, Kaufman F, Foster GD, Baranowski T. Lessons learned from the HEALTHY primary prevention trial of risk factors for type 2 diabetes in middle school youth. Curr Diab Rep 2013; 13:63-71. [PMID: 23065367 PMCID: PMC3544993 DOI: 10.1007/s11892-012-0333-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The HEALTHY trial was designed to take a primary prevention approach to risk factors for type 2 diabetes in youth, primarily obesity. The study involved over 6,000 students at 42 middle schools across the U.S. Half received an integrated intervention program of components addressing the school food environment, physical education, lifestyle behaviors, and promotional messaging. The intervention was designed to be more comprehensive than previous efforts, and the research was amply funded. Although the primary objective of reducing the percentage of overweight and obesity in schools that received the intervention program, as compared with control schools, was not obtained, key secondary outcomes indicated an intervention effect. In retrospect, senior investigators involved in the study's design, conduct, and analysis discuss weaknesses and strengths and offer recommendations for future research efforts that address prevention of childhood obesity from a public health perspective.
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Affiliation(s)
- Marsha D. Marcus
- University of Pittsburgh School of Medicine, 3811 O’Hara Street, Pittsburgh PA 15213, (o) 412-246-6371, (f) 412-246-6370,
| | - Kathryn Hirst
- George Washington University Biostatistics Center, 6110 Executive Boulevard, Suite 750, Rockville MD 02852, (o) 301-881-9260, (f) 301-881-3767,
| | - Francine Kaufman
- Children’s Hospital Los Angeles, 4650 Sunset Boulevard, MS 61, Los Angeles CA 90027, (o) 323-361-5489, (f) 323-361-1350,
| | - Gary D. Foster
- Temple University Center for Obesity Research and Education, 3223 North Broad Street, Philadelphia PA 19140, (o) 215-707-8632, (f) 215-707-6475,
| | - Tom Baranowski
- Baylor College of Medicine Children's Nutrition Research Center, 1100 Bates Street, Houston TX 77030, (o) 713-798-6762, (f) 713-798-7098,
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Whole grains and health: attitudes to whole grains against a prevailing background of increased marketing and promotion. Public Health Nutr 2012; 16:743-51. [PMID: 23102407 DOI: 10.1017/s1368980012003205] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
OBJECTIVE To explore current awareness and perceptions of whole grain foods and perceived barriers and facilitators of whole grain consumption. DESIGN Focus groups were conducted to investigate consumer attitudes to whole grains. Discussions were transcribed verbatim and analysed thematically. SETTING Discussions were held throughout Northern Ireland with adults who were at least partly responsible for food shopping. SUBJECTS Seven focus groups were held (n 43; thirty-three females, ten males). RESULTS All participants were aware of the term 'whole grain' and had a basic level of awareness of their health benefits. Prominent barriers and facilitators of whole grain intake were related to perceptions of the sensory properties (most dominant factor) of whole grains; knowledge of how to locate, identify and use whole grains; and awareness of the health benefits, perceived cost and family influences. Parents of young children appeared to be altruistically motivated with many stating they wanted to ensure their children consumed whole grains in order to establish good eating habits. CONCLUSIONS Participants were generally aware of the term 'whole grain'; however, even against a background of increased availability and promotion of whole grain foods, many key barriers to whole grain consumption were still evident. Alongside general education efforts, opportunities and challenges exist for the food industry to develop novel, but affordable, food products that are able to deliver whole grains in a wide variety of forms, including whole grains 'in disguise' for those who are most resistant to change.
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Willi SM, Hirst K, Jago R, Buse J, Kaufman F, El ghormli L, Bassin S, Elliot D, Hale DE. Cardiovascular risk factors in multi-ethnic middle school students: the HEALTHY primary prevention trial. Pediatr Obes 2012; 7:230-9. [PMID: 22461375 PMCID: PMC3348358 DOI: 10.1111/j.2047-6310.2011.00042.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Revised: 10/24/2011] [Accepted: 12/09/2011] [Indexed: 01/01/2023]
Abstract
OBJECTIVE The objective of this study was to examine the effects of an integrated, multi-component, school-based intervention programme on cardiovascular disease (CVD) risk factors among a multi-ethnic cohort of middle school students. METHODS HEALTHY was a cluster randomized, controlled, primary prevention trial. Middle school was the unit of randomization and intervention. Half of the schools were assigned to an intervention programme consisting of changes in the total school food environment and physical education classes, enhanced by educational outreach and behaviour change activities and promoted by a social marketing campaign consisting of reinforcing messages and images. Outcome data reported (anthropometrics, blood pressure and fasting lipid levels) were collected on a cohort of students enrolled at the start of 6th grade (∼11-12 years old) and followed to end of 8th grade (∼13-14 years old). RESULTS Forty-two middle schools were enrolled at seven field centres; 4363 students provided both informed consent and CVD data at baseline and end of study. The sample was 52.7% female, 54.5% Hispanic, 17.6% non-Hispanic Black, 19.4% non-Hispanic White and 8.5% other racial/ethnic combinations, and 49.6% were categorized as overweight or obese (body mass index ≥ 85th percentile) at baseline. A significant intervention effect was detected in the prevalence of hypertension in non-Hispanic Black and White males. The intervention produced no significant changes in lipid levels. CONCLUSIONS The prevalence of some CVD risk factors is high in minority middle school youth, particularly males. A multi-component, school-based programme achieved only modest reductions in these risk factors; however, promising findings occurred in non-Hispanic Black and White males with hypertension.
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Affiliation(s)
- S. M. Willi
- Deparment of Endocrinology/Diabetes; Children's Hospital of Philadelphia; Philadelphia; PA; USA
| | - K. Hirst
- Biostatistics Center; George Washington University; Rockville; MD; USA
| | - R. Jago
- Deparment of Exercise; Nutrition and Health; University of Bristol; Bristol; UK
| | - J. Buse
- School of Medicine; University of North Carolina; Chapel Hill; NC; USA
| | - F. Kaufman
- University of Southern California; Children's Hospital Los Angeles; Los Angeles; CA; USA
| | - L. El ghormli
- Biostatistics Center; George Washington University; Rockville; MD; USA
| | - S. Bassin
- University of California; Irvine; CA; USA
| | - D. Elliot
- Health Promotion and Sports Medicine; Oregon Health & Science University; Portland; OR; USA
| | - D. E. Hale
- Deparment of Pediatrics; University of Texas Health Science Center; San Antonio; TX; USA
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Hall WJ, Zeveloff A, Steckler A, Schneider M, Thompson D, Pham T, Volpe SL, Hindes K, Sleigh A, McMurray RG. Process evaluation results from the HEALTHY physical education intervention. HEALTH EDUCATION RESEARCH 2012; 27:307-18. [PMID: 22156231 PMCID: PMC3303206 DOI: 10.1093/her/cyr107] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2011] [Accepted: 11/07/2011] [Indexed: 05/31/2023]
Abstract
Process evaluation is an assessment of the implementation of an intervention. A process evaluation component was embedded in the HEALTHY study, a primary prevention trial for Type 2 diabetes implemented over 3 years in 21 middle schools across the United States. The HEALTHY physical education (PE) intervention aimed at maximizing student engagement in moderate-to-vigorous physical activity through delivery of structured lesson plans by PE teachers. Process evaluation data collected via class observations and interventionist interviews assessed fidelity, dose delivered, implementor participation, dose received and barriers. Process evaluation results indicate a high level of fidelity in implementing HEALTHY PE activities and offering 225 min of PE every 10 school days. Concerning dose delivered, students were active for approximately 33 min of class, representing an average of 61% of the class time. Results also indicate that PE teachers were generally engaged in implementing the HEALTHY PE curriculum. Data on dose received showed that students were highly engaged with the PE intervention; however, student misbehavior was the most common barrier observed during classes. Other barriers included teacher disengagement, large classes, limited gym space and poor classroom management. Findings suggest that the PE intervention was generally implemented and received as intended despite several barriers.
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Affiliation(s)
- William J Hall
- School of Nursing.chool of Social Work, University of North Carolina, Chapel Hill, NC 27599, USA.
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Mobley CC, Stadler DD, Staten MA, ghormli LE, Gillis B, Hartstein J, Siega-Riz AM, Virus A. Effect of nutrition changes on foods selected by students in a middle school-based diabetes prevention intervention program: the HEALTHY experience. THE JOURNAL OF SCHOOL HEALTH 2012; 82:82-90. [PMID: 22239133 PMCID: PMC3261591 DOI: 10.1111/j.1746-1561.2011.00670.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
BACKGROUND The HEALTHY primary prevention trial developed an integrated multicomponent intervention program to moderate risk factors for type 2 diabetes in middle schools. The nutrition component aimed to improve the quality of foods and beverages served to students. Changes in the School Breakfast Program (SBP), National School Lunch Program (NSLP), and à la carte venues are compared to the experience of control schools. METHODS The intervention was implemented in 21 middle schools from winter 2007 through spring 2009 (following a cohort of students from sixth through eighth grades); 21 schools acted as observed controls. The nutrition component targeted school food service environmental change. Data identifying foods and nutrients served (selected by students for consumption) were collected over a 20-day period at baseline and end of study. Analysis compared end of study values for intervention versus control schools. RESULTS Intervention schools more successfully limited dessert and snack food portion size in NSLP and à la carte and lowered fat content of foods served. Servings of high-fiber grain-based foods and/or legumes were improved in SBP but not NSLP. Intervention and control schools eliminated >1% fat milk and added-sugar beverages in SBP, but intervention schools were more successful in NSLP and à la carte. CONCLUSION The HEALTHY program demonstrated significant changes in the nutritional quality of foods and beverages served in the SBP, NSLP, and à la carte venues, as part of an effort to decrease childhood obesity and support beneficial effects in some secondary HEALTHY study outcomes.
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Affiliation(s)
- Connie C. Mobley
- Associate Dean of Research and Professor of Nutrition, University of Nevada Las Vegas, 1001 Shadow Lane MS 7425, Las Vegas, NV 89106, Phone: 702-774-2643, FAX: 7027742647
| | - Diane D. Stadler
- Assistant Professor, Division of Health Promotion & Sports Medicine, Director of Graduate Programs in Human Nutrition, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, CR110, Portland, Oregon 97239, Phone: 503-494-0168, FAX: 503-494-1310
| | - Myrlene A Staten
- Senior Advisor, Diabetes Translational Research, National Institutes of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, 6707 Democracy Blvd, Rm 6107, Bethesda, MD 20892, Phone: 301-402-7886, FAX: 301-480-3503
| | - Laure El ghormli
- Senior Research Associate, Biostatistics Center, George Washington University, 6110 Executive Blvd, Suite 750, Rockville, MD 20852, Phone: 301-231-6804, Fax: 301-881-3767
| | - Bonnie Gillis
- Senior Manager, Scientific Content Development, Health Promotion Department, University of Pittsburgh Medical Center Health Plan, Two Chatham Center, 112 Washington Place, Pittsburgh, PA 15219, Phone: 412-454-5658, FAX: 412-454-2942
| | - Jill Hartstein
- Nutritionist, University of California, Irvine, 620 University Tower, 4199 Campus Drive, Irvine, CA 92697, Phone: 949-285-4626, Fax: 949-824-8849
| | - Anna Maria Siega-Riz
- Professor of Epidemiology and Nutrition, Associate Chair of Epidemiology, 2105-A McGavran Greenberg Bld, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, Phone: 919-962-8410
| | - Amy Virus
- Center for Obesity Research & Education, Temple University, 3223 North Broad Street, Suite 175, Philadelphia PA 19140, Phone: 215-707-8669, FAX: 215-707-6475
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Casagrande SS, Dalcin A, McCarron P, Appel LJ, Gayles D, Hayes J, Daumit G. A nutritional intervention to reduce the calorie content of meals served at psychiatric rehabilitation programs. Community Ment Health J 2011; 47:711-5. [PMID: 21691819 PMCID: PMC6449692 DOI: 10.1007/s10597-011-9436-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2010] [Accepted: 06/10/2011] [Indexed: 11/29/2022]
Abstract
To assess the effectiveness of an intervention to reduce the calorie content of meals served at two psychiatric rehabilitation programs. Intervention staff assisted kitchen staff with ways to reduce calories and improve the nutritional quality of meals. Breakfast and lunch menus were collected before and after a 6-month intervention period. ESHA software was used to determine total energy and nutrient profiles of meals. Total energy of served meals significantly decreased by 28% at breakfast and 29% at lunch for site 1 (P < 0.05); total energy significantly decreased by 41% at breakfast for site 2 (P = 0.018). Total sugars significantly decreased at breakfast for both sites (P ≤ 0.001). In general, sodium levels were high before and after the intervention period. The nutrition intervention was effective in decreasing the total energy and altering the composition of macro-nutrients of meals. These results highlight an unappreciated opportunity to improve diet quality in patients attending psychiatric rehabilitation programs.
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DeBar LL, Schneider M, Drews KL, Ford EG, Stadler DD, Moe EL, White M, Hernandez AE, Solomon S, Jessup A, Venditti EM. Student public commitment in a school-based diabetes prevention project: impact on physical health and health behavior. BMC Public Health 2011; 11:711. [PMID: 21933431 PMCID: PMC3189889 DOI: 10.1186/1471-2458-11-711] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2011] [Accepted: 09/20/2011] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND As concern about youth obesity continues to mount, there is increasing consideration of widespread policy changes to support improved nutritional and enhanced physical activity offerings in schools. A critical element in the success of such programs may be to involve students as spokespeople for the program. Making such a public commitment to healthy lifestyle program targets (improved nutrition and enhanced physical activity) may potentiate healthy behavior changes among such students and provide a model for their peers. This paper examines whether student's "public commitment"--voluntary participation as a peer communicator or in student-generated media opportunities--in a school-based intervention to prevent diabetes and reduce obesity predicted improved study outcomes including reduced obesity and improved health behaviors. METHODS Secondary analysis of data from a 3-year randomized controlled trial conducted in 42 middle schools examining the impact of a multi-component school-based program on body mass index (BMI) and student health behaviors. A total of 4603 students were assessed at the beginning of sixth grade and the end of eighth grade. Process evaluation data were collected throughout the course of the intervention. All analyses were adjusted for students' baseline values. For this paper, the students in the schools randomized to receive the intervention were further divided into two groups: those who participated in public commitment activities and those who did not. Students from comparable schools randomized to the assessment condition constituted the control group. RESULTS We found a lower percentage of obesity (greater than or equal to the 95th percentile for BMI) at the end of the study among the group participating in public commitment activities compared to the control group (21.5% vs. 26.6%, p = 0.02). The difference in obesity rates at the end of the study was even greater among the subgroup of students who were overweight or obese at baseline; 44.6% for the "public commitment" group, versus 53.2% for the control group (p = 0.01). There was no difference in obesity rates between the group not participating in public commitment activities and the control group (26.4% vs. 26.6%). CONCLUSIONS Participating in public commitment activities during the HEALTHY study may have potentiated the changes promoted by the behavioral, nutrition, and physical activity intervention components. TRIAL REGISTRATION ClinicalTrials.gov number, NCT00458029.
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Affiliation(s)
- Lynn L DeBar
- Kaiser Permanente Center for Health Research, 3800 North Interstate Ave, Portland, OR 97227, USA
| | - Margaret Schneider
- Department of Planning, Policy, and Design, University of California at Irvine, 258 Social Ecology I, Irvine, CA 92697, USA
| | - Kimberly L Drews
- The George Washington University Biostatistics Center, 6110 Executive Blvd, Suite 750, Rockville, MD 20852, USA
| | - Eileen G Ford
- The Children's Hospital of Philadelphia, Department of Pediatrics, 3535 Market Street, Suite 1572, Philadelphia, PA 19104, USA
| | - Diane D Stadler
- Division of Health Promotion and Sports Medicine, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, CR110, Portland, OR 97239, USA
| | - Esther L Moe
- Division of Health Promotion and Sports Medicine, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, CR110, Portland, OR 97239, USA
| | - Mamie White
- Children's Nutrition Research Center, Baylor College of Medicine, 1100 Bates Street #2033, Houston, TX 77030, USA
| | - Arthur E Hernandez
- College of Education, Texas A&M University, Corpus Christi, 6300 Ocean Drive, Unit 5818, Corpus Christi, TX 78412, USA
| | - Sara Solomon
- City of Philadelphia Department of Public Health, 1101 Market Street, Floor 9, Philadelphia, PA 19102, USA
| | - Ann Jessup
- School of Nursing, The University of North Carolina at Chapel Hill, Carrington Hall, CB #7460, Chapel Hill, NC 27599-7460, USA
| | - Elizabeth M Venditti
- University of Pittsburgh, Western Psychiatric Institute and Clinic, 3811 O'Hara St., Pittsburgh, PA 15213, USA
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Siega-Riz AM, El Ghormli L, Mobley C, Gillis B, Stadler D, Hartstein J, Volpe SL, Virus A, Bridgman J. The effects of the HEALTHY study intervention on middle school student dietary intakes. Int J Behav Nutr Phys Act 2011; 8:7. [PMID: 21294869 PMCID: PMC3041997 DOI: 10.1186/1479-5868-8-7] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2010] [Accepted: 02/04/2011] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND The HEALTHY study was designed to respond to the alarming trends in increasing rates of overweight, obesity, and type 2 diabetes mellitus in youth. The objective of this analysis was to examine the effects of the HEALTHY study on student self-reported dietary intakes (energy, macronutrients and grams consumed of selected food groups). METHODS HEALTHY was a cluster-randomized study in 42 public middle schools. Students, n=3908, self-reported dietary intake using the Block Kids Questionnaire. General linear mixed models were used to analyze differences in dietary intake at the end of the study between intervention and control schools. RESULTS The reported average daily fruit consumption was 10% higher at the end of the study in the intervention schools than in the control schools (138 g or approximately 2 servings versus 122 g, respectively, p=0.0016). The reported water intake was approximately 2 fluid ounces higher in the intervention schools than in the control (483 g versus 429 g respectively; p=0.008). There were no significant differences between intervention and control for mean intakes of energy, macronutrients, fiber, grains, vegetables, legumes, sweets, sweetened beverages, and higher- or lower-fat milk consumption. CONCLUSION The HEALTHY study, a five-semester middle school-based intervention program that integrated multiple components in nutrition, physical education, behavior change, and social marketing-based communications, resulted in significant changes to student's reported fruit and water intake. Subsequent interventions need to go beyond the school environment to change diet behaviors that may affect weight status of children.
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Affiliation(s)
- Anna Maria Siega-Riz
- Carolina Population Center, University of North Carolina at Chapel Hill. NC. USA
| | | | | | - Bonnie Gillis
- Health Promotion Department, University of Pittsburgh Medical Center Health Plan, PA, USA
| | - Diane Stadler
- Division of Health Promotion & Sports Medicine, Oregon Health & Science University, OR, USA
| | | | - Stella L Volpe
- Division of Biobehavioral and Health Sciences, School of Nursing, University of Pennsylvania, PA, USA
| | - Amy Virus
- Center for Obesity Research & Education Temple University, PA, USA
| | - Jessica Bridgman
- School of Nursing, University of North Carolina at Chapel Hill. NC, USA
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Piñeros M, Pardo C, Poveda E. Prácticas de alimentación en adolescentes escolares de cinco ciudades colombianas: resultados de la Encuesta Mundial de Salud a Escolares. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/s0123-9015(11)70075-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Hartstein J, Cullen KW, Virus A, El Ghormli L, Volpe SL, Staten MA, Bridgman JC, Stadler DD, Gillis B, McCormick SB, Mobley CC. Impact of the HEALTHY Study on Vending Machine Offerings in Middle Schools. JOURNAL OF CHILD NUTRITION & MANAGEMENT (ONLINE) 2011; 35:16353. [PMID: 23687471 PMCID: PMC3655774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
PURPOSEOBJECTIVES The purpose of this study is to report the impact of the three-year middle school-based HEALTHY study on intervention school vending machine offerings. There were two goals for the vending machines: serve only dessert/snack foods with 200 kilocalories or less per single serving package, and eliminate 100% fruit juice and beverages with added sugar. METHODS Six schools in each of seven cities (Houston, TX, San Antonio, TX, Irvine, CA, Portland, OR, Pittsburg, PA, Philadelphia, PA, and Chapel Hill, NC) were randomized into intervention (n=21 schools) or control (n=21 schools) groups, with three intervention and three control schools per city. All items in vending machine slots were tallied twice in the fall of 2006 for baseline data and twice at the end of the study, in 2009. The percentage of total slots for each food/beverage category was calculated and compared between intervention and control schools at the end of study, using the Pearson chi-square test statistic. RESULTS At baseline, 15 intervention and 15 control schools had beverage and/or snack vending machines, compared with 11 intervention and 11 control schools at the end of the study. At the end of study, all of the intervention schools with beverage vending machines, but only one out of the nine control schools, met the beverage goal. The snack goal was met by all of the intervention schools and only one of the four control schools with snack vending machines. APPLICATIONS TO CHILD NUTRITION PROFESSIONALS The HEALTHY study's vending machine beverage and snack goals were successfully achieved in intervention schools, reducing access to less healthy food items outside the school meals program. Although the effect of these changes on student diet, energy balance and growth is unknown, these results suggest that healthier options for snacks can successfully be offered in school vending machines.
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Abstract
The HEALTHY study was a multi-site randomized trial designed to determine whether a 3-year school-based intervention targeting nutrition and physical activity behaviors could effectively reduce risk factors associated with type 2 diabetes in middle school children. Pilot and formative studies were conducted to inform the development of the intervention components and the process evaluation methods for the main trial. During the main trial, both qualitative and quantitative assessments monitored the fidelity of the intervention and motivated modifications to improve intervention delivery. Structured observations of physical education classes, total school food environments, classroom-based educational modules, and communications and promotional campaigns provided verification that the intervention was delivered as intended. Interviews and focus groups yielded a multidimensional assessment of how the intervention was delivered and received, as well as identifying the barriers to and facilitators of the intervention across and within participating schools. Interim summaries of process evaluation data were presented to the study group as a means of ensuring standardization and quality of the intervention across the seven participating centers. Process evaluation methods and procedures documented the fidelity with which the HEALTHY study was implemented across 21 intervention schools and identified ways in which the intervention delivery might be enhanced throughout the study.
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Rationale, design and methods of the HEALTHY study physical education intervention component. Int J Obes (Lond) 2010; 33 Suppl 4:S37-43. [PMID: 19623187 DOI: 10.1038/ijo.2009.115] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The HEALTHY primary prevention trial was designed to reduce risk factors for type 2 diabetes in middle school students. Middle schools at seven centers across the United States participated in the 3-year study. Half of them were randomized to receive a multi-component intervention. The intervention integrated nutrition, physical education (PE) and behavior changes with a communications strategy of promotional and educational materials and activities. The PE intervention component was developed over a series of pilot studies to maximize student participation and the time (in minutes) spent in moderate-to-vigorous physical activity (MVPA), while meeting state-mandated PE guidelines. The goal of the PE intervention component was to achieve > or =150 min of MVPA in PE classes every 10 school days with the expectation that it would provide a direct effect on adiposity and insulin resistance, subsequently reducing the risk of type 2 diabetes in youth. The PE intervention component curriculum used standard lesson plans to provide a comprehensive approach to middle school PE. Equipment and PE teacher assistants were provided for each school. An expert in PE at each center trained the PE teachers and assistants, monitored delivery of the intervention and provided ongoing feedback and guidance.
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Social marketing-based communications to integrate and support the HEALTHY study intervention. Int J Obes (Lond) 2010; 33 Suppl 4:S52-9. [PMID: 19623190 DOI: 10.1038/ijo.2009.117] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The HEALTHY study was a randomized, controlled, multicenter, middle school-based, multifaceted intervention designed to reduce risk factors for the development of type 2 diabetes. The study randomized 42 middle schools to intervention or control, and followed students from the sixth to the eighth grades. Participants were a racially, ethnically and geographically diverse cohort from across the United States. Here, we describe the conceptual underpinnings and design of the social marketing-based communications component of the HEALTHY study intervention that combined changes in the school nutrition and physical education (PE) environment with behavior change initiatives. The communications intervention component coordinated multiple elements to deliver campaigns that served to integrate and support all aspects of the HEALTHY intervention. The campaigns unfolded across five semesters of middle school, each targeting a specific theme related to the HEALTHY objectives. Communications campaigns comprised (1) core elements such as branding, posters, banners and visual and verbal messaging, (2) student events supporting the nutrition, PE and behavior intervention components through the application of social marketing and communications strategies, including the incorporation of student-generated media and (3) distribution of premiums and theme enhancers to extend the visibility of the study beyond the intervention environment. Formative research conducted with students, parents and school administrators was used to refine the communications strategy. Student peer communicators selected from the student body were involved to influence the normative student environment. Marketing and creative design experts developed a brand, logo, activities and materials. In the latter half of the study, student-generated messages and media were used to reflect local interests and culture and enhance peer influence. The HEALTHY intervention delivery and impact were strengthened by the communications strategies. The HEALTHY experience provides practical considerations for systematically incorporating a social marketing-based communications approach within future school-based health behavior interventions.
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Venditti EM, Elliot DL, Faith MS, Firrell LS, Giles CM, Goldberg L, Marcus MD, Schneider M, Solomon S, Thompson D, Yin Z. Rationale, design and methods of the HEALTHY study behavior intervention component. Int J Obes (Lond) 2010; 33 Suppl 4:S44-51. [PMID: 19623189 DOI: 10.1038/ijo.2009.116] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
HEALTHY was a multi-center primary prevention trial designed to reduce risk factors for type 2 diabetes in adolescents. Seven centers each recruited six middle schools that were randomized to either intervention or control. The HEALTHY intervention integrated multiple components in nutrition, physical education, behavior change and communications and promotion. The conceptual rationale as well as the design and development of the behavior intervention component are described. Pilot study data informed the development of the behavior intervention component. Principles of social learning and health-related behavior change were incorporated. One element of the behavior intervention component was a sequence of peer-led, teacher-facilitated learning activities known as FLASH (Fun Learning Activities for Student Health). Five FLASH modules were implemented over five semesters of the HEALTHY study, with the first module delivered in the second semester of the sixth grade and the last module in the second semester of the eighth grade. Each module contained sessions that were designed to be delivered on a weekly basis to foster self-awareness, knowledge, decision-making skills and peer involvement for health behavior change. FLASH behavioral practice incorporated individual and group self-monitoring challenges for eating and activity. Another element of the behavior intervention component was the family outreach strategy for extending changes in physical activity and healthy eating beyond the school day and for supporting the student's lifestyle change choices. Family outreach strategies included the delivery of newsletters and supplemental packages with materials to promote healthy behavior in the home environment during school summer and winter holiday breaks. In conclusion, the HEALTHY behavior intervention component, when integrated with total school food and physical education environmental changes enhanced by communications and promotional campaigns, is a feasible and acceptable mechanism for delivering age-appropriate social learning for healthy eating and physical activity among an ethnically diverse group of middle school students across the United States.
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Affiliation(s)
- E M Venditti
- Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA.
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Foster GD, Linder B, Baranowski T, Cooper DM, Goldberg L, Harrell JS, Kaufman F, Marcus MD, Treviño RP, Hirst K. A school-based intervention for diabetes risk reduction. N Engl J Med 2010; 363:443-53. [PMID: 20581420 PMCID: PMC2924187 DOI: 10.1056/nejmoa1001933] [Citation(s) in RCA: 255] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
BACKGROUND We examined the effects of a multicomponent, school-based program addressing risk factors for diabetes among children whose race or ethnic group and socioeconomic status placed them at high risk for obesity and type 2 diabetes. METHODS Using a cluster design, we randomly assigned 42 schools to either a multicomponent school-based intervention (21 schools) or assessment only (control, 21 schools). A total of 4603 students participated (mean [+/- SD] age, 11.3 [+/- 0.6 years; 54.2% Hispanic and 18.0% black; 52.7% girls). At the beginning of 6th grade and the end of 8th grade, students underwent measurements of body-mass index (BMI), waist circumference, and fasting glucose and insulin levels. RESULTS There was a decrease in the primary outcome--the combined prevalence of overweight and obesity--in both the intervention and control schools, with no significant difference between the school groups. The intervention schools had greater reductions in the secondary outcomes of BMI z score, percentage of students with waist circumference at or above the 90th percentile, fasting insulin levels (P=0.04 for all comparisons), and prevalence of obesity (P=0.05). Similar findings were observed among students who were at or above the 85th percentile for BMI at baseline. Less than 3% of the students who were screened had an adverse event; the proportions were nearly equivalent in the intervention and control schools. CONCLUSIONS Our comprehensive school-based program did not result in greater decreases in the combined prevalence of overweight and obesity than those that occurred in control schools. However, the intervention did result in significantly greater reductions in various indexes of adiposity. These changes may reduce the risk of childhood-onset type 2 diabetes. (Funded by the National Institutes of Health and the American Diabetes Association; ClinicalTrials.gov number, NCT00458029.)
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Hirst K, Baranowski T, DeBar L, Foster GD, Kaufman F, Kennel P, Linder B, Schneider M, Venditti EM, Yin Z. HEALTHY study rationale, design and methods: moderating risk of type 2 diabetes in multi-ethnic middle school students. Int J Obes (Lond) 2009; 33 Suppl 4:S4-20. [PMID: 19623188 PMCID: PMC2782907 DOI: 10.1038/ijo.2009.112] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The HEALTHY primary prevention trial was designed and implemented in response to the growing numbers of children and adolescents being diagnosed with type 2 diabetes. The objective was to moderate risk factors for type 2 diabetes. Modifiable risk factors measured were indicators of adiposity and glycemic dysregulation: body mass index > or =85th percentile, fasting glucose > or =5.55 mmol l(-1) (100 mg per 100 ml) and fasting insulin > or =180 pmol l(-1) (30 microU ml(-1)). A series of pilot studies established the feasibility of performing data collection procedures and tested the development of an intervention consisting of four integrated components: (1) changes in the quantity and nutritional quality of food and beverage offerings throughout the total school food environment; (2) physical education class lesson plans and accompanying equipment to increase both participation and number of minutes spent in moderate-to-vigorous physical activity; (3) brief classroom activities and family outreach vehicles to increase knowledge, enhance decision-making skills and support and reinforce youth in accomplishing goals; and (4) communications and social marketing strategies to enhance and promote changes through messages, images, events and activities. Expert study staff provided training, assistance, materials and guidance for school faculty and staff to implement the intervention components. A cohort of students were enrolled in sixth grade and followed to end of eighth grade. They attended a health screening data collection at baseline and end of study that involved measurement of height, weight, blood pressure, waist circumference and a fasting blood draw. Height and weight were also collected at the end of the seventh grade. The study was conducted in 42 middle schools, six at each of seven locations across the country, with 21 schools randomized to receive the intervention and 21 to act as controls (data collection activities only). Middle school was the unit of sample size and power computation, randomization, intervention and primary analysis.
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