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Morgan-Bathke M, Baxter SD, Halliday TM, Lynch A, Malik N, Raynor HA, Garay JL, Rozga M. Weight Management Interventions Provided by a Dietitian for Adults with Overweight or Obesity: An Evidence Analysis Center Systematic Review and Meta-Analysis. J Acad Nutr Diet 2023; 123:1621-1661.e25. [PMID: 35788061 DOI: 10.1016/j.jand.2022.03.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 03/04/2022] [Accepted: 03/21/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND Obesity is associated with a multitude of comorbidities and considerable health care costs. OBJECTIVE The objective of this review was to examine the efficacy of weight management interventions provided by a registered dietitian or international equivalent (referred to as "dietitian"). METHODS This systematic review and meta-analysis of randomized controlled trials (RCTs) examined the effect of weight management interventions provided by a dietitian, compared with usual care or no intervention, on several cardiometabolic outcomes and quality of life in adults with overweight or obesity. MEDLINE, Embase, PsycINFO, Cochrane CENTRAL, Cochrane Database of Systematic Reviews, and CINAHL databases were searched for eligible RCTs published between January 2008 and January 2021 in the English language. Meta-analyses were conducted using a random-effects model, publication bias was assessed using funnel plots and Egger's statistics, and heterogeneity was assessed by interpreting I2 values. Efficacy of intervention components, such as telehealth or group contacts, were explored in sub-group analyses. Version 2 of the risk-of-bias tool for RCTs was used to assess risk of bias. The Grading of Recommendations Assessment, Development and Evaluation method was used to determine certainty of evidence. RESULTS This systematic review included 62 RCTs. Compared with control conditions, weight management interventions provided by a dietitian resulted in improved body mass index (mean difference [MD] -1.5; 95% CI -1.74 to -1.26; moderate evidence certainty); percent weight loss (MD -4.01%; 95% CI -5.26% to -2.75%; high evidence certainty); waist circumference (MD -3.45 cm; 95% CI -4.39 to -2.51 cm; high evidence certainty); blood pressure (MD -3.04 mm Hg; 95% CI -5.10 to -0.98 mm Hg and MD -1.99 mm Hg; 95% CI -3.02 to -0.96 mm Hg for systolic blood pressure and diastolic blood pressure, respectively; moderate and low evidence certainty); and quality of life using the 36-Item Short Form Survey (MD 5.84; 95% CI 2.27 to 9.41 and 2.39; 95% CI 1.55 to 3.23 for physical and mental quality of life, respectively; low and moderate evidence certainty). CONCLUSIONS For adults with overweight or obesity, weight management interventions provided by a dietitian are efficacious for improving several examined cardiometabolic outcomes and quality of life.
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Affiliation(s)
| | | | - Tanya M Halliday
- Department of Health and Kinesiology, University of Utah, Salt Lake City, UT
| | - Amanda Lynch
- Department of Interdisciplinary Health Sciences, Oakland University, Rochester, MI
| | - Neal Malik
- Department of Health Science and Human Ecology, California State University, San Bernardino, San Bernardino, CA
| | - Hollie A Raynor
- College of Education, Health, and Human Sciences, University of Tennessee Knoxville, Knoxville, TN
| | - Jessica L Garay
- Department of Nutrition and Food Studies, Syracuse University, Syracuse NY
| | - Mary Rozga
- Academy of Nutrition and Dietetics, Chicago, IL.
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Morgan-Bathke M, Raynor HA, Baxter SD, Halliday TM, Lynch A, Malik N, Garay JL, Rozga M. Medical Nutrition Therapy Interventions Provided by Dietitians for Adult Overweight and Obesity Management: An Academy of Nutrition and Dietetics Evidence-Based Practice Guideline. J Acad Nutr Diet 2023; 123:520-545.e10. [PMID: 36462613 DOI: 10.1016/j.jand.2022.11.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 11/27/2022] [Indexed: 12/03/2022]
Abstract
Overweight and obesity affect most adults living in the United States and are causally linked to several adverse health outcomes. Registered dietitian nutritionists or international equivalents (dietitians) collaborate with each client and other health care professionals to meet client-centered goals, informed by the best available evidence, and translated through a lens of clinical expertise and client circumstances and preferences. Since the last iteration of the Academy of Nutrition and Dietetics guideline on adult weight management in 2014, considerable research has been conducted and circumstances confronting dietitians have evolved. Thus, updated guidance is needed. The objective of this evidence-based practice guideline is to provide recommendations for dietitians who deliver medical nutrition therapy behavioral interventions for adults (18 years and older) with overweight and obesity to improve cardiometabolic outcomes, quality of life, and weight outcomes, when appropriate for and desired by the client. Recommendations in this guideline highlight the importance of considering complex contributors to overweight and obesity and individualizing interventions to client-centered goals based on specific needs and preferences and shared decision making. The described recommendations have the potential to increase access to care and decrease costs through utilization of telehealth and group counseling as effective delivery methods, and to address other barriers to overweight and obesity management interventions. It is essential for dietitians to collaborate with clients and interprofessional health care teams to provide high-quality medical nutrition therapy interventions using the nutrition care process to promote attainment of client-centered outcomes for adults with overweight or obesity.
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Affiliation(s)
- Maria Morgan-Bathke
- Department of Nutrition and Dietetics, Viterbo University, La Crosse, Wisconsin
| | - Hollie A Raynor
- College of Education, Health, and Human Sciences, University of Tennessee, Knoxville, Tennessee
| | | | - Tanya M Halliday
- Department of Health and Kinesiology, University of Utah, Salt Lake City, Utah
| | - Amanda Lynch
- Department of Interdisciplinary Health Sciences, Oakland University, Rochester, MI
| | - Neal Malik
- Department of Health Science and Human Ecology, California State University, San Bernardino, San Bernardino, California
| | - Jessica L Garay
- Department of Nutrition and Food Studies, Syracuse University, Syracuse
| | - Mary Rozga
- Academy of Nutrition and Dietetics, Chicago, Illinois.
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Correia JC, Waqas A, Huat TS, Gariani K, Jornayvaz FR, Golay A, Pataky Z. Effectiveness of Therapeutic Patient Education Interventions in Obesity and Diabetes: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Nutrients 2022; 14:3807. [PMID: 36145181 PMCID: PMC9503927 DOI: 10.3390/nu14183807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 09/09/2022] [Accepted: 09/09/2022] [Indexed: 11/17/2022] Open
Abstract
Diabetes mellitus (DM) and obesity account for the highest burden of non-communicable diseases. There is increasing evidence showing therapeutic patient education (TPE) as a clinically and cost-effective solution to improve biomedical and psychosocial outcomes among people with DM and obesity. The present systematic review and meta-analysis present a critical synthesis of the development of TPE interventions for DM and obesity and the efficacy of these interventions across a range of biomedical, psychosocial and psychological outcomes. A total of 54 of these RCTs were identified among patients with obesity and diabetes and were thus qualitatively synthesized. Out of these, 47 were included in the quantitative synthesis. There was substantial heterogeneity in the reporting of these outcomes (I2 = 88.35%, Q = 317.64), with a significant improvement noted in serum HbA1c levels (standardized mean difference (SMD) = 0.272, 95% CI: 0.118 to 0.525, n = 7360) and body weight (SMD = 0.526, 95% CI: 0.205 to 0.846, n = 1082) in the intervention group. The effect sizes were comparable across interventions delivered by different modes and delivery agents. These interventions can be delivered by allied health staff, doctors or electronically as self-help programs, with similar effectiveness (p < 0.001). These interventions should be implemented in healthcare and community settings to improve the health outcomes in patients suffering from obesity and DM.
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Affiliation(s)
- Jorge C. Correia
- Unit of Therapeutic Patient Education, WHO Collaborating Centre, Division of Endocrinology, Diabetology, Nutrition and Therapeutic Patient Education, Geneva University Hospitals and University of Geneva, 1206 Geneva, Switzerland
| | - Ahmed Waqas
- Institute of Population Health, University of Liverpool, Liverpool L69 7ZA, UK
| | - Teoh Soo Huat
- Department of Community Health, Advanced Medical & Dental Institute, Universiti Sains Malaysia, 13200 Kepala Batas, Penang, Malaysia
| | - Karim Gariani
- Unit of Therapeutic Patient Education, WHO Collaborating Centre, Division of Endocrinology, Diabetology, Nutrition and Therapeutic Patient Education, Geneva University Hospitals and University of Geneva, 1206 Geneva, Switzerland
| | - François R. Jornayvaz
- Unit of Therapeutic Patient Education, WHO Collaborating Centre, Division of Endocrinology, Diabetology, Nutrition and Therapeutic Patient Education, Geneva University Hospitals and University of Geneva, 1206 Geneva, Switzerland
| | - Alain Golay
- Unit of Therapeutic Patient Education, WHO Collaborating Centre, Division of Endocrinology, Diabetology, Nutrition and Therapeutic Patient Education, Geneva University Hospitals and University of Geneva, 1206 Geneva, Switzerland
| | - Zoltan Pataky
- Unit of Therapeutic Patient Education, WHO Collaborating Centre, Division of Endocrinology, Diabetology, Nutrition and Therapeutic Patient Education, Geneva University Hospitals and University of Geneva, 1206 Geneva, Switzerland
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Evaluation of an adapted version of the Diabetes Prevention Program for low- and middle-income countries: A cluster randomized trial to evaluate "Lifestyle Africa" in South Africa. PLoS Med 2022; 19:e1003964. [PMID: 35427357 PMCID: PMC9053793 DOI: 10.1371/journal.pmed.1003964] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 04/29/2022] [Accepted: 03/14/2022] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Low- and middle-income countries (LMICs) are experiencing major increases in diabetes and cardiovascular conditions linked to overweight and obesity. Lifestyle interventions such as the United States National Diabetes Prevention Program (DPP) developed in high-income countries require adaptation and cultural tailoring for LMICs. The objective of this study was to evaluate the efficacy of "Lifestyle Africa," an adapted version of the DPP tailored for an underresourced community in South Africa compared to usual care. METHODS AND FINDINGS Participants were residents of a predominantly Xhosa-speaking urban township of Cape Town, South Africa characterized by high rates of poverty. Participants with body mass index (BMI) ≥ 25 kg/m2 who were members of existing social support groups or "clubs" receiving health services from local nongovernmental organizations (NGOs) were enrolled in a cluster randomized controlled trial that compared Lifestyle Africa (the intervention condition) to usual care (the control condition). The Lifestyle Africa intervention consisted of 17 video-based group sessions delivered by trained community health workers (CHWs). Clusters were randomized using a numbered list of the CHWs and their assigned clubs based on a computer-based random allocation scheme. CHWs, participants, and research team members could not be blinded to condition. Percentage weight loss (primary outcome), hemoglobin A1c (HbA1c), blood pressure, triglycerides, and low-density lipoprotein (LDL) cholesterol were assessed 7 to 9 months after enrollment. An individual-level intention-to-treat analysis was conducted adjusting for clustering within clubs and baseline values. Trial registration is at ClinicalTrials.gov (NCT03342274). Between February 2018 and May 2019, 782 individuals were screened, and 494 were enrolled. Participants were predominantly retired (57% were receiving a pension) and female (89%) with a mean age of 68 years. Participants from 28 clusters were allocated to Lifestyle Africa (15, n = 240) or usual care (13, n = 254). Fidelity assessments indicated that the intervention was generally delivered as intended. The modal number of sessions held across all clubs was 17, and the mean attendance of participants across all sessions was 61%. Outcome assessment was completed by 215 (90%) intervention and 223 (88%) control participants. Intent-to-treat analyses utilizing multilevel modeling included all randomized participants. Mean weight change (primary outcome) was -0.61% (95% confidence interval (CI) = -1.22, -0.01) in Lifestyle Africa and -0.44% (95% CI = -1.06, 0.18) in control with no significant difference (group difference = -0.17%; 95% CI = -1.04, 0.71; p = 0.71). However, HbA1c was significantly lower at follow-up in Lifestyle Africa compared to the usual care group (mean difference = -0.24, 95% CI = -0.39, -0.09, p = 0.001). None of the other secondary outcomes differed at follow-up: systolic blood pressure (group difference = -1.36; 95% CI = -6.92, 4.21; p = 0.63), diastolic blood pressure (group difference = -0.39; 95% CI = -3.25, 2.30; p = 0.78), LDL (group difference = -0.07; 95% CI = -0.19, 0.05; p = 0.26), triglycerides (group difference = -0.02; 95% CI = -0.20, 0.16; p = 0.80). There were no unanticipated problems and serious adverse events were rare, unrelated to the intervention, and similar across groups (11 in Lifestyle Africa versus 13 in usual care). Limitations of the study include the lack of a rigorous dietary intake measure and the high representation of older women. CONCLUSIONS In this study, we found that Lifestyle Africa was feasible for CHWs to deliver and, although it had no effect on the primary outcome of weight loss or secondary outcomes of blood pressure or triglycerides, it had an apparent small significant effect on HbA1c. The study demonstrates the potential feasibility of CHWs to deliver a program without expert involvement by utilizing video-based sessions. The intervention may hold promise for addressing cardiovascular disease (CVD) and diabetes at scale in LMICs. TRIAL REGISTRATION ClinicalTrials.gov NCT03342274.
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Healthy and unhealthy eating after a behaviour change intervention in primary care. Prim Health Care Res Dev 2022; 23:e23. [PMID: 35357281 PMCID: PMC8991859 DOI: 10.1017/s1463423622000147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND To prevent and reduce non-communicable diseases, the Norwegian Directorate of Health encourages Healthy Life Centres (HLCs) in all municipalities. AIMS This study investigates whether the behaviour change interventions at HLCs positively affected participants' diet and to evaluate predictors for healthy and unhealthy eating. Our data are part of the Norwegian Healthy Life Centre Study, a 6-month, pragmatic randomised controlled trial (RCT). METHODS Totally, 118 participants ≥18 years old were randomised to an intervention group (n 57), or a waiting list (control group) (n 61). Eighty-six participants met at the 6 months follow-up visit. We merged the participants to one cohort for predictor analyses, using linear regressions. FINDINGS The RCT of the HLCs' interventions had no effect on healthy and unhealthy eating 6 months after baseline compared with controls. A short, additional healthy eating education programme produced a modest, statistically significant improvement in healthy eating compared with controls. This did not, however, reduce unhealthy eating. Higher income predicted unhealthier eating over time. Increasing body mass index and impaired physical functioning also led to an increase in unhealthy eating. Healthy eating at 6 months was predicted by self-rated health (SRH), vitality and life satisfaction, and hampered by musculo-skeletal challenges and impaired self-esteem (SE). SRH impacted improvement in healthy eating during the 6 months. The effect of interventions on healthier eating may be improved by an emphasis on developing positive self-concepts like better SRH, vitality, life satisfaction, and SE.
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Khalesi S, Williams E, Irwin C, Johnson DW, Webster J, McCartney D, Jamshidi A, Vandelanotte C. Reducing salt intake: a systematic review and meta-analysis of behavior change interventions in adults. Nutr Rev 2022; 80:723-740. [PMID: 34921314 PMCID: PMC8907486 DOI: 10.1093/nutrit/nuab110] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
CONTEXT Prolonged high salt (sodium) intake can increase the risk of hypertension and cardiovascular disease. Behavioral interventions may help reduce sodium intake at the population level. OBJECTIVE The effectiveness of behavior change interventions to reduce sodium intake in adults was investigated in this systematic review and meta-analysis. DATA SOURCE The PubMed, Cochrane Library, Cumulative Index to Nursing and Allied Health Literature, and EMBASE databases were searched. DATA EXTRACTION Narrative synthesis and random-effects meta-analyses were used to determine intervention efficacy. A total of 61 trials (46 controlled trials and 15 quasi-experimental studies) were included. RESULTS Behavior change interventions resulted in significant improvements in salt consumption behavior (eg, decrease in purchase of salty foods; increase in use of salt substitutes), leading to reductions in sodium intake as measured by urinary sodium in 32 trials (N = 7840 participants; mean difference, -486.19 mg/d [95%CI, -669.44 to -302.95]; P < 0.001; I2 = 92%) and dietary sodium in 19 trials (N = 3750 participants; mean difference -399.86 mg/d [95%CI, -581.51 to -218.20]; P < 0.001; I2 = 96%), equivalent to a reduction of >1 g of salt intake daily. Effects were not significantly different based on baseline sodium intakes, blood pressure status, disease status, the use of behavior change theories, or the main method of intervention delivery (ie, online vs face-to-face). CONCLUSION Behavior change interventions are effective at improving salt consumption practices and appear to reduce salt intake by >1 g/d. SYSTEMATIC REVIEW REGISTRATION PROSPERO registration no. CRD42020185639.
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Affiliation(s)
- Saman Khalesi
- Appelton Institute & School of Health, Medical and Applied Sciences, Central Queensland University, Rockhampton & Brisbane, Queensland, Australia
| | - Edwina Williams
- Appelton Institute & School of Health, Medical and Applied Sciences, Central Queensland University, Rockhampton & Brisbane, Queensland, Australia
| | - Christopher Irwin
- Menzies Health Institute Queensland and School of Health Sciences and Social Work, Griffith University, Gold Coast, Queensland, Australia
| | - David W Johnson
- Centre for Kidney Disease Research, University of Queensland, Brisbane, Queensland, Australia
- Translational Research Institute, Brisbane, Queensland, Australia
- MetroSouth Integrated Nephrology and Transplant Services (MINTS), Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - Jacqui Webster
- The George Institute for Global Health, University of New South Wales, Sydney, New South Wales, Australia
| | - Danielle McCartney
- Faculty of Science, School of Psychology, University of Sydney, Sydney, New South Wales, Australia
| | | | - Corneel Vandelanotte
- Appelton Institute & School of Health, Medical and Applied Sciences, Central Queensland University, Rockhampton & Brisbane, Queensland, Australia
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Guerra PH, Soares HF, Mafra AB, Czarnobai I, Cruz GA, Weber WV, Farias JCH, Loch MR, Ribeiro EHC. Educational interventions for physical activity among Brazilian adults: systematic review. Rev Saude Publica 2021; 55:110. [PMID: 34932699 PMCID: PMC8664058 DOI: 10.11606/s1518-8787.2021055003236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 03/17/2021] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE To summarize the main evidence from educational interventions designed to increase levels of physical activity (PA) among Brazilian adults. METHODS Systematic review of intervention studies carried out in Brazil that implemented educational components aimed at promoting increased levels of PA among adult populations (18 to 65 years old). In October 2020, systematic searches were conducted in six databases, and in the reference lists of the assessed studies. RESULTS Of the initial 2,511 studies, nine were included in the synthesis. Samples with specific characteristics (such as social vulnerability, physical inactivity, and overweight or obesity) were observed, with a greater number of women. Five interventions (55.6%) occurred in primary healthcare settings (PHC) of the Brazilian Unified Health System (SUS). Only four studies (44.4%) described the pedagogical frameworks structuring the educational approaches, among which counseling was the most used strategy, such as those carried out through face-to-face meetings, home visits, lectures, and phone calls (n = 8; 88.9%). Positive results were observed in three different indicators: increase in weekly PA volume (n = 4); increase in leisure-time PA rate (n = 1); and increase in the proportion of women classified as “very active/active” (n = 1). Given the sampling specificities, the domain “participant selection” showed a high number of interventions with high risk of bias. CONCLUSIONS Educational approaches engendered some positive effects on different PA indicators, notably counseling as the main strategy used and approaches involving other health themes, such as nutrition and stress. However, considering the several determinants of PA in Brazil, future interventions should be conducted in different locations of Brazil in order to evaluate, in a broader way, their implementation processes and articulation with the many professionals working in PHC.
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Affiliation(s)
- Paulo Henrique Guerra
- Universidade Federal da Fronteira Sul. Curso de Medicina. Chapecó, SC, Brasil.,Universidade de São Paulo. Grupo de Estudos e Pesquisas Epidemiológicas em Atividade Física e Saúde da São Paulo, SP, Brasil
| | - Hugo Falqueto Soares
- Universidade Federal da Fronteira Sul. Curso de Medicina. Chapecó, SC, Brasil.,Universidade Federal da Fronteira Sul. Programa de Pós-Graduação em Ciências Biomédicas. Chapecó, SC, Brasil
| | - Ana Beatriz Mafra
- Universidade Federal da Fronteira Sul. Curso de Medicina. Chapecó, SC, Brasil
| | - Izadora Czarnobai
- Universidade Federal da Fronteira Sul. Curso de Medicina. Chapecó, SC, Brasil
| | | | | | | | - Mathias Roberto Loch
- Universidade Estadual de Londrina. Programa de Pós-Graduação em Saúde Coletiva. Londrina, PR, Brasil
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Longitudinal Changes in Food Addiction Symptoms and Body Weight among Adults in a Behavioral Weight-Loss Program. Nutrients 2020; 12:nu12123687. [PMID: 33260468 PMCID: PMC7760227 DOI: 10.3390/nu12123687] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 11/25/2020] [Accepted: 11/27/2020] [Indexed: 12/13/2022] Open
Abstract
Interest in food addiction (FA) has increased, but little is known about its clinical implications or potential treatments. Using secondary analyses from a randomized controlled trial, we evaluated the associations between changes in FA, body weight, and “problem food” consumption during a 22-month behavioral weight-loss program consisting of an initial four-month in-person intervention, 12-month extended-care, and six-month follow-up (n = 182). Food addiction was measured using the Yale Food Addiction Scale. “Problem foods” were identified from the literature and self-reporting. Multilevel modeling was used as the primary method of analysis. We hypothesized that reductions in problem food consumption during the initial treatment phase would be associated with long-term (22-month) FA reductions. As expected, we found that reductions in problem foods were associated with greater initial reductions in FA symptoms; however, they were also associated with a sharper rebound in symptoms over time (p = 0.016), resulting in no significant difference at Month 22 (p = 0.856). Next, we hypothesized that long-term changes in FA would be associated with long-term changes in body weight. Although both FA and weight decreased over time (ps < 0.05), month-to-month changes in FA were not associated with month-to-month changes in weight (p = 0.706). Instead, higher overall FA (i.e., mean scores over the course of the study) were associated with less weight loss (p = 0.008) over time. Finally, we hypothesized that initial reductions in problem food consumption would be associated with long-term reductions in weight, but this relationship was not significant (ps > 0.05). Given the complexity of the findings, more research is needed to identify interventions for long-term changes in FA and to elucidate the associations between problem foods, FA, and weight.
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Weight Management Interventions for Adults With Overweight or Obesity: An Evidence Analysis Center Scoping Review. J Acad Nutr Diet 2020; 121:1855-1865. [PMID: 33069660 DOI: 10.1016/j.jand.2020.07.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 06/30/2020] [Accepted: 07/21/2020] [Indexed: 12/26/2022]
Abstract
The objectives of this evidence scoping review were to identify and characterize studies investigating weight management interventions provided by a registered dietitian nutritionist or international equivalent (RDN) among adults with overweight or obesity. A medical librarian conducted an electronic literature search in 6 databases-MEDLINE (Ovid), Embase (Ovid), PyscINFO (Ovid), Cochrane CENTRAL (Ovid), Cochrane Database of Systematic Reviews (Ovid), and CINAHL (Ebsco). Except for narrative review, gray literature, and case study or report, all types of peer-reviewed articles published between January 2008 and April 26, 2019 were eligible. Two content advisors, who are experts in adult weight management, guided the process and reviewed the search plan and findings. The literature search resulted in 30,551 records with 16 additional records identified through other sources. A total of 29,756 records were excluded during the first round of screening due to duplication or irrelevancy. Of the 811 full-text articles that were screened, 139 met the criteria and were included. Approximately 51% and 43% of the studies were conducted in the community setting and in the United States or Canada, respectively. Over 97% of the studies were clinical or quasi-experimental trials. A total of 6 different intervention delivery modes were reported, which resulted in 22 combinations of the modes of delivery. RDNs delivered the weight management intervention (especially the nutrition component) in all studies, but some (61%) also involved an interdisciplinary team to deliver other components of the intervention. The average length of the intervention was about 10 months with a follow-up that ranged from 0 to 9 years. The commonly reported outcomes were anthropometrics, endocrine, and cardiovascular measures; dietary intake; and physical activity. Based on the scoping review, there were systematic reviews and evidence-based practice guidelines on weight management interventions but none of them met the a priori inclusion or exclusion criteria. Therefore, it would be beneficial to conduct a systematic review and develop an evidence-based practice guideline on adult weight management interventions provided by an RDN to guide practitioners and to evaluate their effects on health and nutrition-related outcomes.
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Meurer ST, Lopes ACS, Almeida FA, Mendonça RDD, Benedetti TRB. Effectiveness of the VAMOS Strategy for Increasing Physical Activity and Healthy Dietary Habits: A Randomized Controlled Community Trial. HEALTH EDUCATION & BEHAVIOR 2019; 46:406-416. [PMID: 30636448 DOI: 10.1177/1090198118820095] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
This study aimed to evaluate the effectiveness of the VAMOS strategy (Health-Improving Active Life) in improving physical activity (PA), dietary habits, and anthropometric variables of primary health care (PHC) users in Brazil. A randomized controlled community trial was conducted at two units of the Health Academy Program (HAP; a service provided by PHC), which were randomly assigned either to control group (CG) or intervention group (IG). Participants in both groups (CG = 156 and IG = 135) took part in physical activity classes provided by HAP facilities with those in IG also participating in the VAMOS strategy for 12 weeks. This strategy is based on social cognitive theory. The main behavioral constructs addressed were self-efficacy, goal setting, self-monitoring, identification of social support and barriers, and solutions for the identified barriers. Physical activity was measured with accelerometers, and nutritional status was assessed using dietary habits questionnaires and anthropometric measurements. Intention-to-treat analysis revealed that participants in IG increased the daily time of moderate-vigorous PA and the frequency of raw vegetable intake, while the intake of ultra-processed foods was reduced. Weight loss among participants who were classified as overweight/obese at baseline was observed in the intervention group compared to control. These results suggest that the VAMOS strategy was effective in increasing PA, healthy dietary habits, and decreasing weight among PHC users. Therefore, VAMOS could be used as a strategy to strengthen individuals' autonomy regarding healthy choices and improve their overall health.
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Affiliation(s)
- Simone Teresinha Meurer
- 1 Federal University of Santa Catarina, Florianópolis, Brazil.,2 Federal Institute of Minas Gerais, Belo Horizonte, Brazil
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Yu Y, Lv Y, Yao B, Duan L, Zhang X, Xie L, Chang C. A novel prescription pedometer-assisted walking intervention and weight management for Chinese occupational population. PLoS One 2018; 13:e0190848. [PMID: 29324808 PMCID: PMC5764333 DOI: 10.1371/journal.pone.0190848] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 12/20/2017] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND AND AIM Information technology has been previously used for the research and practice of health promotion. Appropriate and effective health promotion methods used by professional groups remain to be investigated. This study aimed to assess the feasibility and effectiveness of a weight management program among the Chinese occupational population using and a novel information technology exercise prescription. STUDY DESIGN AND PARTICIPANTS A 3-month open, self-monitored intervention trial, involving individualized pedometer-assisted exercise prescription and a one-time targeted dietary guidance prior to exercise was conducted on the Chinese occupational population aged 18-65 years in China from 2015 to 2016. Data were collected from March 2015 to May 2016 and analyzed from June 2016 to August 2016. Participants were also asked to synchronize exercise data of the pedometer to the Internet-based Health System Center daily (at least weekly), by connecting to the personal computer (PC) using a USB cable or via Bluetooth. RESULTS Eligible participants included 802 Chinese occupational persons, and 718 of them followed exercise interventions with 89.5% (718/802) adherence to the exercise programs. Of them, 688 participants completed the program with 85.8% (688/802) adherence to the exercise program and their data were analyzed. Weight decreased by 2.2% among all overweight/obese participants, with 1.8% reduction in waist circumference and 3.3% reduction in body fat percentage (p< 0.001). Weight and body fat percentage in normal-weight individuals decreased by 0.7% and 2.5%, respectively (p < 0.01). A weight gain of 1.0% was observed in all underweight participants (p< 0.05), and 68.2% (208/305) of overweight/obese participants experienced weight loss, with an average reduction of 3.5%, with 20.2% (42/208) of them achieving weight loss ≥5%. Blood pressure and fasting serum glucose decreased significantly in both the overweight/obese and the normal-weight individuals (p < 0.05). The incidence of hypertension was significantly lower and lifestyle behavior significantly improved (p < 0.05). CONCLUSION The prescription pedometer-assisted walking intervention can effectively improve exercise adherence and manage weight. This approach was also effective in controlling the risk factors of weight-related chronic diseases. TRIAL REGISTRATION Chinese Clinical Trial Registry (ChiCTR) ChiCTR-OOh-16010229.
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Affiliation(s)
- Yingxiang Yu
- Institute of Sports Medicine, Peking University Third Hospital, Beijing, China
| | - Yiran Lv
- Institute of Sports Medicine, Peking University Third Hospital, Beijing, China
| | - Bin Yao
- Descom Information Technology (Beijing) Co. Ltd., Beijing, China
| | - Liguang Duan
- Descom Information Technology (Beijing) Co. Ltd., Beijing, China
| | - Xiaoyuan Zhang
- Institute of Sports Medicine, Peking University Third Hospital, Beijing, China
| | - Lan Xie
- Institute of Sports Medicine, Peking University Third Hospital, Beijing, China
| | - Cuiqing Chang
- Institute of Sports Medicine, Peking University Third Hospital, Beijing, China
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Avilés-Santa ML, Colón-Ramos U, Lindberg NM, Mattei J, Pasquel FJ, Pérez CM. From Sea to Shining Sea and the Great Plains to Patagonia: A Review on Current Knowledge of Diabetes Mellitus in Hispanics/Latinos in the US and Latin America. Front Endocrinol (Lausanne) 2017; 8:298. [PMID: 29176960 PMCID: PMC5687125 DOI: 10.3389/fendo.2017.00298] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 10/16/2017] [Indexed: 12/13/2022] Open
Abstract
The past two decades have witnessed many advances in the prevention, treatment, and control of diabetes mellitus (DM) and its complications. Increased screening has led to a greater recognition of type 2 diabetes mellitus (type 2 DM) and prediabetes; however, Hispanics/Latinos, the largest minority group in the US, have not fully benefited from these advances. The Hispanic/Latino population is highly diverse in ancestries, birth places, cultures, languages, and socioeconomic backgrounds, and it populates most of the Western Hemisphere. In the US, the prevalence of DM varies among Hispanic/Latino heritage groups, being higher among Mexicans, Puerto Ricans, and Dominicans, and lower among South Americans. The risk and prevalence of diabetes among Hispanics/Latinos are significantly higher than in non-Hispanic Whites, and nearly 40% of Hispanics/Latinos with diabetes have not been formally diagnosed. Despite these striking facts, the representation of Hispanics/Latinos in pharmacological and non-pharmacological clinical trials has been suboptimal, while the prevalence of diabetes in these populations continues to rise. This review will focus on the epidemiology, etiology and prevention of type 2 DM in populations of Latin American origin. We will set the stage by defining the terms Hispanic, Latino, and Latin American, explaining the challenges identifying Hispanics/Latinos in the scientific literature and databases, describing the epidemiology of diabetes-including type 2 DM and gestational diabetes mellitus (GDM)-and cardiovascular risk factors in Hispanics/Latinos in the US and Latin America, and discussing trends, and commonalities and differences across studies and populations, including methodology to ascertain diabetes. We will discuss studies on mechanisms of disease, and research on prevention of type 2 DM in Hispanics/Latinos, including women with GDM, youth and adults; and finalize with a discussion on lessons learned and opportunities to enhance research, and, consequently, clinical care oriented toward preventing type 2 DM in Hispanics/Latinos in the US and Latin America.
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Affiliation(s)
- M. Larissa Avilés-Santa
- National Heart, Lung, and Blood Institute at the National Institutes of Health, Bethesda, MD, United States
| | - Uriyoán Colón-Ramos
- Department of Global Health, Milken Institute School of Public Health, George Washington University, Washington, DC, United States
| | - Nangel M. Lindberg
- Kaiser Permanente Center for Health Research, Portland, OR, United States
| | - Josiemer Mattei
- Department of Nutrition, Harvard TH Chan School of Public Health, Boston, MA, United States
| | - Francisco J. Pasquel
- Department of Medicine, Emory University School of Medicine, Atlanta, GA, United States
| | - Cynthia M. Pérez
- University of Puerto Rico Graduate School of Public Health, San Juan, Puerto Rico
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Samdal GB, Eide GE, Barth T, Williams G, Meland E. Effective behaviour change techniques for physical activity and healthy eating in overweight and obese adults; systematic review and meta-regression analyses. Int J Behav Nutr Phys Act 2017. [PMID: 28351367 DOI: 10.1186/s12966–017–0494-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
PURPOSE This systematic review aims to explain the heterogeneity in results of interventions to promote physical activity and healthy eating for overweight and obese adults, by exploring the differential effects of behaviour change techniques (BCTs) and other intervention characteristics. METHODS The inclusion criteria specified RCTs with ≥ 12 weeks' duration, from January 2007 to October 2014, for adults (mean age ≥ 40 years, mean BMI ≥ 30). Primary outcomes were measures of healthy diet or physical activity. Two reviewers rated study quality, coded the BCTs, and collected outcome results at short (≤6 months) and long term (≥12 months). Meta-analyses and meta-regressions were used to estimate effect sizes (ES), heterogeneity indices (I2) and regression coefficients. RESULTS We included 48 studies containing a total of 82 outcome reports. The 32 long term reports had an overall ES = 0.24 with 95% confidence interval (CI): 0.15 to 0.33 and I2 = 59.4%. The 50 short term reports had an ES = 0.37 with 95% CI: 0.26 to 0.48, and I2 = 71.3%. The number of BCTs unique to the intervention group, and the BCTs goal setting and self-monitoring of behaviour predicted the effect at short and long term. The total number of BCTs in both intervention arms and using the BCTs goal setting of outcome, feedback on outcome of behaviour, implementing graded tasks, and adding objects to the environment, e.g. using a step counter, significantly predicted the effect at long term. Setting a goal for change; and the presence of reporting bias independently explained 58.8% of inter-study variation at short term. Autonomy supportive and person-centred methods as in Motivational Interviewing, the BCTs goal setting of behaviour, and receiving feedback on the outcome of behaviour, explained all of the between study variations in effects at long term. CONCLUSION There are similarities, but also differences in effective BCTs promoting change in healthy eating and physical activity and BCTs supporting maintenance of change. The results support the use of goal setting and self-monitoring of behaviour when counselling overweight and obese adults. Several other BCTs as well as the use of a person-centred and autonomy supportive counselling approach seem important in order to maintain behaviour over time. TRIAL REGISTRATION PROSPERO CRD42015020624.
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Affiliation(s)
- Gro Beate Samdal
- Department of Global Public Health and Primary Care, University of Bergen, Kalfarveien 31, N-5018, Bergen, Norway.
| | - Geir Egil Eide
- Department for Research and Development, Haukeland University Hospital, Bergen, Norway.,Centre for Clinical Research, Haukeland University Hospital, Bergen, Norway
| | - Tom Barth
- Member of Motivational Interviewing Network of Trainers (MINT), Allasso, Norway
| | | | - Eivind Meland
- Department of Global Public Health and Primary Care, University of Bergen, Kalfarveien 31, N-5018, Bergen, Norway
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Samdal GB, Eide GE, Barth T, Williams G, Meland E. Effective behaviour change techniques for physical activity and healthy eating in overweight and obese adults; systematic review and meta-regression analyses. Int J Behav Nutr Phys Act 2017; 14:42. [PMID: 28351367 PMCID: PMC5370453 DOI: 10.1186/s12966-017-0494-y] [Citation(s) in RCA: 400] [Impact Index Per Article: 57.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 03/13/2017] [Indexed: 12/26/2022] Open
Abstract
Purpose This systematic review aims to explain the heterogeneity in results of interventions to promote physical activity and healthy eating for overweight and obese adults, by exploring the differential effects of behaviour change techniques (BCTs) and other intervention characteristics. Methods The inclusion criteria specified RCTs with ≥ 12 weeks’ duration, from January 2007 to October 2014, for adults (mean age ≥ 40 years, mean BMI ≥ 30). Primary outcomes were measures of healthy diet or physical activity. Two reviewers rated study quality, coded the BCTs, and collected outcome results at short (≤6 months) and long term (≥12 months). Meta-analyses and meta-regressions were used to estimate effect sizes (ES), heterogeneity indices (I2) and regression coefficients. Results We included 48 studies containing a total of 82 outcome reports. The 32 long term reports had an overall ES = 0.24 with 95% confidence interval (CI): 0.15 to 0.33 and I2 = 59.4%. The 50 short term reports had an ES = 0.37 with 95% CI: 0.26 to 0.48, and I2 = 71.3%. The number of BCTs unique to the intervention group, and the BCTs goal setting and self-monitoring of behaviour predicted the effect at short and long term. The total number of BCTs in both intervention arms and using the BCTs goal setting of outcome, feedback on outcome of behaviour, implementing graded tasks, and adding objects to the environment, e.g. using a step counter, significantly predicted the effect at long term. Setting a goal for change; and the presence of reporting bias independently explained 58.8% of inter-study variation at short term. Autonomy supportive and person-centred methods as in Motivational Interviewing, the BCTs goal setting of behaviour, and receiving feedback on the outcome of behaviour, explained all of the between study variations in effects at long term. Conclusion There are similarities, but also differences in effective BCTs promoting change in healthy eating and physical activity and BCTs supporting maintenance of change. The results support the use of goal setting and self-monitoring of behaviour when counselling overweight and obese adults. Several other BCTs as well as the use of a person-centred and autonomy supportive counselling approach seem important in order to maintain behaviour over time. Trial Registration PROSPERO CRD42015020624 Electronic supplementary material The online version of this article (doi:10.1186/s12966-017-0494-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Gro Beate Samdal
- Department of Global Public Health and Primary Care, University of Bergen, Kalfarveien 31, N-5018, Bergen, Norway.
| | - Geir Egil Eide
- Department for Research and Development, Haukeland University Hospital, Bergen, Norway.,Centre for Clinical Research, Haukeland University Hospital, Bergen, Norway
| | - Tom Barth
- Member of Motivational Interviewing Network of Trainers (MINT), Allasso, Norway
| | | | - Eivind Meland
- Department of Global Public Health and Primary Care, University of Bergen, Kalfarveien 31, N-5018, Bergen, Norway
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Abstract
Public policies, population health initiatives, and targeted behavioral change interventions for individuals at risk for developing diabetes are all essential for diabetes prevention in Latin American countries (LACs). This scoping review examines (1) the current evidence on diabetes prevention policies and interventions in LACs to identify components of effective diabetes prevention models in those countries and (2) effective diabetes prevention interventions targeting Latino populations in the USA to explore possible lessons from these interventions for LACs. Diabetes prevention programs in LACs evaluated to date consist of short-term health professional-led face-to-face behavioral counseling sessions. Intervention components of US-based programs for Latinos that might benefit diabetes prevention programs in Latin America include (1) deployment of community health workers ("promotoras") for diabetes screening and delivery of lifestyle modification programs, (2) multiple modes of program delivery beyond face-to-face sessions, (3) information technology to automate and enhance program delivery, (4) leveraging of pre-existing familial relationships to engage in and sustain lifestyle modifications, and (5) innovative environmental change strategies such as collaborations with local food stores and markets to promote healthy behaviors.
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Affiliation(s)
- Michele Heisler
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA.
- Center for Clinical Management Research (CCMR), Ann Arbor Veterans' Affairs (VA) Healthcare System, 2215 Fuller Rd. (152), Ann Arbor, MI, 48105, USA.
- Department of Health Behavior and Health Education, School of Public Health, University of Michigan, Ann Arbor, MI, USA.
- Michigan Center for Diabetes Translational Research (MCDTR), University of Michigan, Ann Arbor, MI, USA.
| | - Elizabeth Kaselitz
- Center for Clinical Management Research (CCMR), Ann Arbor Veterans' Affairs (VA) Healthcare System, 2215 Fuller Rd. (152), Ann Arbor, MI, 48105, USA
- Global REACH and Department of Medical Education, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Gurpreet K Rana
- Taubman Health Sciences Library, University of Michigan, 1135 East Catherine Street, Ann Arbor, MI, 48109, USA
| | - John D Piette
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
- Center for Clinical Management Research (CCMR), Ann Arbor Veterans' Affairs (VA) Healthcare System, 2215 Fuller Rd. (152), Ann Arbor, MI, 48105, USA
- Department of Health Behavior and Health Education, School of Public Health, University of Michigan, Ann Arbor, MI, USA
- Center for Managing Chronic Disease, University of Michigan School of Public Health, 1415 Washington Heights, Ann Arbor, MI, 48109, USA
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de Deus RM, Mingoti SA, Jaime PC, Lopes ACS. The impact of a nutritional intervention on the nutritional status and anthropometric profile of participants in the health Gym Programme in Brazil. CIENCIA & SAUDE COLETIVA 2015; 20:1937-46. [PMID: 26060972 DOI: 10.1590/1413-81232015206.11882014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Accepted: 11/02/2014] [Indexed: 11/22/2022] Open
Abstract
The objective of this study was to assess the impact of an intervention implemented under the Programa Academia da Saúde (Health Gym Programme) of Belo Horizonte, MG on the nutritional status and anthropometric profile of participants. Intervention study involving participants in the Health Gym Programme which encompasses group food and nutrition education activities over a period of 11 months combined with regular physical activity. Impact was assessed by comparing nutritional and anthropometric indicators in women participants who were divided into two groups according to their participation rate in the intervention. A total of 124 women were evaluated, results showed an increase in the number of daily meals (p<0.001) among all participants. Participants whose participation rate was less than 50% (n = 61) reduced their daily consumption of sugary soft drinks (p = 0.03), while those whose participation rate was 50% and over (n = 63) reduced daily per capita intake of oil (p = 0.01) and sugar (p = 0.002), increased their consumption of fruit (p = 0. 004), and milk and dairy products (p = 0.02), and also experienced weight loss (-1.3 ± 3.9kg; p = 0.02). The findings show the importance of combining nutritional interventions with physical activity to ensure positive impacts on the nutritional status and anthropometric profile of participants in the Health Gym Programme.
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Affiliation(s)
- Raquel Mendonça de Deus
- Escola de Enfermagem, Departamento de Enfermagem Materno-Infantil e Saúde Pública, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil,
| | | | | | - Aline Cristine Souza Lopes
- Escola de Enfermagem, Departamento de Enfermagem Materno-Infantil e Saúde Pública, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil,
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Desroches S, Lapointe A, Ratté S, Gravel K, Légaré F, Turcotte S. Interventions to enhance adherence to dietary advice for preventing and managing chronic diseases in adults. Cochrane Database Syst Rev 2013:CD008722. [PMID: 23450587 PMCID: PMC4900876 DOI: 10.1002/14651858.cd008722.pub2] [Citation(s) in RCA: 104] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND It has been recognized that poor adherence can be a serious risk to the health and wellbeing of patients, and greater adherence to dietary advice is a critical component in preventing and managing chronic diseases. OBJECTIVES To assess the effects of interventions for enhancing adherence to dietary advice for preventing and managing chronic diseases in adults. SEARCH METHODS We searched the following electronic databases up to 29 September 2010: The Cochrane Library (issue 9 2010), PubMed, EMBASE (Embase.com), CINAHL (Ebsco) and PsycINFO (PsycNET) with no language restrictions. We also reviewed: a) recent years of relevant conferences, symposium and colloquium proceedings and abstracts; b) web-based registries of clinical trials; and c) the bibliographies of included studies. SELECTION CRITERIA We included randomized controlled trials that evaluated interventions enhancing adherence to dietary advice for preventing and managing chronic diseases in adults. Studies were eligible if the primary outcome was the client's adherence to dietary advice. We defined 'client' as an adult participating in a chronic disease prevention or chronic disease management study involving dietary advice. DATA COLLECTION AND ANALYSIS Two review authors independently assessed the eligibility of the studies. They also assessed the risk of bias and extracted data using a modified version of the Cochrane Consumers and Communication Review Group data extraction template. Any discrepancies in judgement were resolved by discussion and consensus, or with a third review author. Because the studies differed widely with respect to interventions, measures of diet adherence, dietary advice, nature of the chronic diseases and duration of interventions and follow-up, we conducted a qualitative analysis. We classified included studies according to the function of the intervention and present results in a narrative table using vote counting for each category of intervention. MAIN RESULTS We included 38 studies involving 9445 participants. Among studies that measured diet adherence outcomes between an intervention group and a control/usual care group, 32 out of 123 diet adherence outcomes favoured the intervention group, 4 favoured the control group whereas 62 had no significant difference between groups (assessment was impossible for 25 diet adherence outcomes since data and/or statistical analyses needed for comparison between groups were not provided). Interventions shown to improve at least one diet adherence outcome are: telephone follow-up, video, contract, feedback, nutritional tools and more complex interventions including multiple interventions. However, these interventions also shown no difference in some diet adherence outcomes compared to a control/usual care group making inconclusive results about the most effective intervention to enhance dietary advice. The majority of studies reporting a diet adherence outcome favouring the intervention group compared to the control/usual care group in the short-term also reported no significant effect at later time points. Studies investigating interventions such as a group session, individual session, reminders, restriction and behaviour change techniques reported no diet adherence outcome showing a statistically significant difference favouring the intervention group. Finally, studies were generally of short duration and low quality, and adherence measures varied widely. AUTHORS' CONCLUSIONS There is a need for further, long-term, good-quality studies using more standardized and validated measures of adherence to identify the interventions that should be used in practice to enhance adherence to dietary advice in the context of a variety of chronic diseases.
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Affiliation(s)
- Sophie Desroches
- Centre de recherche du Centre hospitalier universitaire de Québec (CHUQ), St-François d’Assise Hôpital, Québec, Canada.
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Waters L, George AS, Chey T, Bauman A. Weight change in control group participants in behavioural weight loss interventions: a systematic review and meta-regression study. BMC Med Res Methodol 2012; 12:120. [PMID: 22873682 PMCID: PMC3499351 DOI: 10.1186/1471-2288-12-120] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2011] [Accepted: 07/23/2012] [Indexed: 11/15/2022] Open
Abstract
Background Unanticipated control group improvements have been observed in intervention trials targeting various health behaviours. This phenomenon has not been studied in the context of behavioural weight loss intervention trials. The purpose of this study is to conduct a systematic review and meta-regression of behavioural weight loss interventions to quantify control group weight change, and relate the size of this effect to specific trial and sample characteristics. Methods Database searches identified reports of intervention trials meeting the inclusion criteria. Data on control group weight change and possible explanatory factors were abstracted and analysed descriptively and quantitatively. Results 85 trials were reviewed and 72 were included in the meta-regression. While there was no change in control group weight, control groups receiving usual care lost 1 kg more than control groups that received no intervention, beyond measurement. Conclusions There are several possible explanations why control group changes occur in intervention trials targeting other behaviours, but not for weight loss. Control group participation may prevent weight gain, although more research is needed to confirm this hypothesis.
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Affiliation(s)
- Lauren Waters
- Cancer Prevention Research Centre, School of Population Health, The University of Queensland, Herston, Brisbane, QLD, 4006, Australia.
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Current world literature. Curr Opin Endocrinol Diabetes Obes 2011; 18:336-8. [PMID: 21878756 DOI: 10.1097/med.0b013e32834ba6ec] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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