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Mast A, Peña A, Bolch CA, Shaibi G, Vander Wyst KB. Sex differences in response to lifestyle intervention among children and adolescents: Systematic review and meta-analysis. Obesity (Silver Spring) 2023; 31:665-692. [PMID: 36762579 PMCID: PMC10352023 DOI: 10.1002/oby.23663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 10/28/2022] [Accepted: 10/28/2022] [Indexed: 02/11/2023]
Abstract
OBJECTIVE Little is known about sex differences in response to lifestyle interventions among pediatric populations. The purpose of this analysis was to evaluate sex differences in adiposity following lifestyle interventions among children and adolescents with overweight or obesity aged 6 to 18 years old. METHODS Searches were conducted in PubMed, Web of Science, and MEDLINE (from inception to March 2021), and references from included articles were examined. Eligibility criteria included children and adolescents aged 6 to 18 years with overweight or obesity, randomization to a lifestyle intervention versus a control group, and assessment of at least one adiposity measure. Corresponding authors were contacted to obtain summary statistics by sex (n = 14/49). RESULTS Of 89 full-text articles reviewed, 49 (55%) were included, of which 33 (67%) reported statistically significant intervention effects on adiposity. Only two studies (4%) evaluated sex differences in response to lifestyle intervention, reporting conflicting results. The results of the meta-regression models demonstrated no significant differences in the treatment effect between male and female youth for weight (beta = -0.05, SE = 0.18, z = -0.28, p = 0.8), BMI (beta = 0.03, SE = 0.14, z = 0.19, p = 0.85), BMI z score (beta = -0.04, SE = 0.18, z = -0.23, p = 0.82), percentage body fat (beta = -0.11, SE = 0.16, z = -0.67, p = 0.51), and waist circumference (beta = -0.30, SE = 0.25, z = -1.18, p = 0.24). CONCLUSIONS The meta-analysis revealed that youth with overweight or obesity do not demonstrate a differential response to lifestyle intervention in relation to adiposity-related outcomes.
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Affiliation(s)
- Alexis Mast
- Arizona College of Osteopathic Medicine, Midwestern University, Glendale, AZ
| | - Armando Peña
- Center for Health Promotion and Disease Prevention, Edson College of Nursing and Health Innovation, Arizona State University, Phoenix, AZ
| | - Charlotte A. Bolch
- Office of Research and Sponsored Programs, Midwestern University, Glendale, AZ
| | - Gabriel Shaibi
- Center for Health Promotion and Disease Prevention, Edson College of Nursing and Health Innovation, Arizona State University, Phoenix, AZ
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2
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Jakobsen DD, Brader L, Bruun JM. Effects of foods, beverages and macronutrients on BMI z-score and body composition in children and adolescents: a systematic review and meta-analysis of randomized controlled trials. Eur J Nutr 2023; 62:1-15. [PMID: 35902429 DOI: 10.1007/s00394-022-02966-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Accepted: 07/11/2022] [Indexed: 02/07/2023]
Abstract
PURPOSE A healthy diet is fundamental for healthy growth and for future disease prevention. However, scientific consensus on how to compose healthy diets for children has not been established. Therefore, a systematic review and meta-analysis was performed to investigate if an independent effect exists between foods, beverages or the composition of macronutrients and body composition in children and adolescents. METHODS A systematic search was performed in four databases up to July 2021. A systematic review of randomized controlled studies (RCTs) and meta-analyses were carried out by extracting mean difference (MDs) and standard deviation (SD) and performed using the random effect model. RESULTS Sixteen RCTs met inclusion criteria. Beyond dairy, sugar-sweetened beverages and macronutrient composition, no trials were identified for other food groups. Based on five RCTs (n:5), a higher-dairy diet was found to reduce body fat percentage - 0.47 [- 0.92, - 0.03] (p = 0.04). A higher-dairy diet was also found to increase lean body mass (kg) 0.34 [0.06, 0.62] (p = 0.02) (n:2), but did not affect BMI z-score - 0.05 [- 0.16, 0.06] (p = 0.39) (n:4). Substituting sugar-sweetened beverage with non-caloric beverages or flavored milk reduced body fat percentage (- 0.70 [- 0.78, - 0.62] (p < 0.001)) (n:3) but did not change BMI z-score (- 0.05 [- 0.20, 0.09] (p = 0.48)) (n:2). No significant effects were found between different macronutrient compositions and BMI z-score or body fat percentage. CONCLUSION Changes in diet from low to higher-dairy consumption and from sugar-sweetened beverages to non-caloric beverages or flavored milk resulted in favorable changes in body composition among children and adolescents. Eligible studies investigating other foods are lacking. TRIAL REGISTRATION PROSPERO registration number (CRD42020173201).
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Affiliation(s)
- Dorthe Dalstrup Jakobsen
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Hedeager 3, 2. Floor, 8200, Aarhus N, Denmark. .,Department of Clinical Medicine, University of Aarhus, Aarhus, Denmark. .,Danish National Center for Obesity, Aarhus, Denmark.
| | - Lea Brader
- Arla Innovation Centre, Global Nutrition, Agro Food Park 19, 8200, Aarhus N, Denmark
| | - Jens Meldgaard Bruun
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Hedeager 3, 2. Floor, 8200, Aarhus N, Denmark.,Department of Clinical Medicine, University of Aarhus, Aarhus, Denmark.,Danish National Center for Obesity, Aarhus, Denmark.,Medical Department, Randers Regional Hospital, Randers, Denmark.,Department of Nutrition, Exercise, and Sports, University of Copenhagen, Copenhagen, Denmark
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3
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Nordlund S, McPhee PG, Gabarin R, Deacon C, Mbuagbaw L, Morrison KM. Effect of obesity treatment interventions in preschool children aged 2-6 years: a systematic review and meta-analysis. BMJ Open 2022; 12:e053523. [PMID: 35383062 PMCID: PMC8984001 DOI: 10.1136/bmjopen-2021-053523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVES (1) To summarise the literature on the impact of paediatric weight management interventions on health outcomes in preschool age children with overweight or obesity and (2) to evaluate the completeness of intervention description and real-world applicability using validated tools. DESIGN Systematic review and meta-analysis. DATA SOURCES MEDLINE, Embase, CINAHL, Cochrane Library and PsychInfo were searched between 10 March 2015 and 21 November 2021. ELIGIBILITY CRITERIA Randomised controlled trials addressing weight management in preschool children (2-6 years) with overweight or obesity. DATA EXTRACTION AND SYNTHESIS Two reviewers independently extracted key information from each study and assessed risk of bias. Random-effects meta-analysis was performed where there was evidence for homogeneous effects. The certainty of evidence was assessed by the Grading of Recommendations Assessment, Development and Evaluation. RESULTS Of the 16 908 studies retrieved, 9 trials (1687 participants) met the inclusion criteria. These interventions used motivational interviewing (MI) or multicomponent educational interventions related to health behaviour approaches and were 6-12 months in duration. All studies contained some risk of bias. A difference was found in the intervention groups compared with controls for body mass index (BMI) z score (mean difference -0.10, 95% CI -0.12 to -0.09; eight trials, 1491 participants; p<0.001; I2 68%), though there was substantial heterogeneity. There were no subgroup effects between studies using MI compared with studies using multicomponent interventions. The certainty of the evidence was considered low. The trials were reported in sufficient detail and were considered pragmatic. CONCLUSIONS Paediatric weight management interventions delivered to the parents of young children with obesity result in small declines in BMI z score. The results should be interpreted cautiously as they were inconsistent and the quality of the evidence was low. PROSPERO REGISTRATION NUMBER CRD42020166843.
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Affiliation(s)
| | - Patrick George McPhee
- Pediatrics, McMaster University, Hamilton, Ontario, Canada
- Centre for Metabolism, Obesity, and Diabetes Research, McMaster University, Hamilton, Ontario, Canada
| | - Ramy Gabarin
- Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Charlotte Deacon
- Faculty of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Lawrence Mbuagbaw
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
- Biostatistics Unit, Father Sean O'Sullivan Research Centre, St Joseph's Healthcare, Hamilton, Ontario, Canada
- Centre for Development of Best Practices in Health (CDBPH), Yaoundé Central Hospital, Yaoundé, Cameroon
- Department of Global Health, Stellenbosch University, Stellenbosch, South Africa
| | - Katherine Mary Morrison
- Pediatrics, McMaster University, Hamilton, Ontario, Canada
- Centre for Metabolism, Obesity, and Diabetes Research, McMaster University, Hamilton, Ontario, Canada
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4
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Consumption of milk and dairy products in Iranian population; barriers and facilitators. CLINICAL NUTRITION OPEN SCIENCE 2021. [DOI: 10.1016/j.nutos.2021.05.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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5
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Skelly LE, Barbour-Tuck EN, Kurgan N, Calleja M, Klentrou P, Falk B, Josse AR. Neutral Effect of Increased Dairy Product Intake, as Part of a Lifestyle Modification Program, on Cardiometabolic Health in Adolescent Girls With Overweight/Obesity: A Secondary Analysis From a Randomized Controlled Trial. Front Nutr 2021; 8:673589. [PMID: 34095194 PMCID: PMC8175852 DOI: 10.3389/fnut.2021.673589] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Accepted: 04/22/2021] [Indexed: 12/28/2022] Open
Abstract
Background: The presence of obesity and some cardiometabolic disease risk factors in childhood and adolescence track into adulthood. Intake of dairy products has been shown to be inversely related to adiposity and cardiometabolic variables in youth. However, limited research has examined cardiometabolic disease risk factors following increased dairy product consumption as part of a lifestyle modification intervention in youth with overweight/obesity. This secondary analysis aimed to determine whether 12 weeks of increased dairy consumption, as part of a lifestyle modification program, affects cardiometabolic variables in adolescent females (range: 10-18 years) with overweight/obesity (BMI > 85th centile). Methods: Participants were randomized into two groups: higher dairy intake (RDa; four servings/day [to reflect previous Canada's Food Guide recommendations]; n = 23) or low dairy intake (LDa; 0-2 servings/day; n = 23). Both RDa and LDa participated in a 12-week, eucaloric, lifestyle modification intervention consisting of exercise training, and nutritional counseling. Adiposity (percent body fat [%BF]), dietary intake, and measures of cardiometabolic health were measured pre- and post-intervention. Results: There were no significant changes over time within groups or differences over time between groups for triglycerides (TG), total cholesterol (TC), high-density lipoprotein cholesterol (HDL), TC/HDL ratio, low-density lipoprotein cholesterol (LDL), glucose, insulin, homeostatic model assessment of insulin resistance, adiponectin, and tumor necrosis factor alpha (TNF-α) (main effects of time and interactions, p > 0.05). Leptin decreased over the 12-week lifestyle intervention in both groups (main effect of time, p = 0.02). After combining the groups (n = 46), significant correlations were found between change in %BF and change in some cardiometabolic variables (HDL [r = -0.40], TC/HDL ratio [r = 0.42], LDL [r = 0.36], and TNF-α [r = 0.35], p < 0.05). After controlling for change in dairy product intake, the correlations were unchanged. Conclusion: Our findings demonstrate that increased dairy product consumption, as part of a lifestyle modification, weight management intervention, had a neutral effect on cardiometabolic disease risk factors in adolescent females with overweight/obesity. Change in dairy product intake did not influence the relationships between change in adiposity and change in cardiometabolic variables. Future research designed to primarily assess the effect of increased dairy product consumption on cardiometabolic disease risk factors in this population is warranted. Clinical Trial Registration: Clinicaltrials.gov; NCT#02581813.
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Affiliation(s)
- Lauren E Skelly
- School of Kinesiology and Health Science, Faculty of Health, York University, Toronto, ON, Canada
| | - Erin N Barbour-Tuck
- School of Kinesiology and Health Science, Faculty of Health, York University, Toronto, ON, Canada
| | - Nigel Kurgan
- Department of Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON, Canada.,Centre for Bone and Muscle Health, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON, Canada
| | - Melissa Calleja
- Department of Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON, Canada
| | - Panagiota Klentrou
- Department of Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON, Canada.,Centre for Bone and Muscle Health, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON, Canada
| | - Bareket Falk
- Department of Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON, Canada.,Centre for Bone and Muscle Health, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON, Canada
| | - Andrea R Josse
- School of Kinesiology and Health Science, Faculty of Health, York University, Toronto, ON, Canada.,Centre for Bone and Muscle Health, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON, Canada
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6
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Duncanson K, Shrewsbury V, Burrows T, Chai LK, Ashton L, Taylor R, Gow M, Ho M, Ells L, Stewart L, Garnett S, Jensen ME, Nowicka P, Littlewood R, Demaio A, Coyle DH, Walker JL, Collins CE. Impact of weight management nutrition interventions on dietary outcomes in children and adolescents with overweight or obesity: a systematic review with meta‐analysis. J Hum Nutr Diet 2020; 34:147-177. [DOI: 10.1111/jhn.12831] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 09/28/2020] [Accepted: 10/02/2020] [Indexed: 12/19/2022]
Affiliation(s)
- K. Duncanson
- School of Health Sciences Faculty of Health and Medicine Priority Research Centre for Physical Activity and Nutrition The University of Newcastle Callaghan NSW Australia
| | - V. Shrewsbury
- School of Health Sciences Faculty of Health and Medicine Priority Research Centre for Physical Activity and Nutrition The University of Newcastle Callaghan NSW Australia
| | - T. Burrows
- School of Health Sciences Faculty of Health and Medicine Priority Research Centre for Physical Activity and Nutrition The University of Newcastle Callaghan NSW Australia
| | - L. K. Chai
- Health and Wellbeing Queensland Queensland Government Milton QLD Australia
- Centre for Children’s Health Research Institute of Health and Biomedical Innovation Exercise and Nutrition Queensland University of Technology South Brisbane QLD Australia
| | - L. Ashton
- School of Health Sciences Faculty of Health and Medicine Priority Research Centre for Physical Activity and Nutrition The University of Newcastle Callaghan NSW Australia
| | - R. Taylor
- School of Health Sciences Faculty of Health and Medicine Priority Research Centre for Physical Activity and Nutrition The University of Newcastle Callaghan NSW Australia
| | - M. Gow
- Institute of Endocrinology and Diabetes The Children’s Hospital at Westmead Westmead NSW Australia
- Children’s Hospital at Westmead Clinical School The University of Sydney Westmead NSW Australia
| | - M. Ho
- School of Nursing The University of Hong Kong Pokfulam Hong Kong
| | - L. Ells
- School of Clinical and Applied Sciences Leeds Beckett University Leeds UK
- Teesside Centre for Evidence Informed Practice: a Joanna Briggs Institute Centre of Excellence Middlesbrough UK
| | - L. Stewart
- Appletree Healthy Lifestyle Consultancy Perth UK
| | - S. Garnett
- Institute of Endocrinology and Diabetes The Children’s Hospital at Westmead Westmead NSW Australia
- Children’s Hospital at Westmead Clinical School The University of Sydney Westmead NSW Australia
| | - M. E. Jensen
- Priority Research Centre Grow Up Well and Faculty of Health and Medicine The University of Newcastle Callaghan NSW Australia
| | - P. Nowicka
- Department of Food Studies, Nutrition and Dietetics Uppsala University Uppsala Sweden
| | - R. Littlewood
- Health and Wellbeing Queensland Queensland Government Milton QLD Australia
- School of Human Movement and Nutrition Sciences The University of Queensland St Lucia QLD Australia
| | - A. Demaio
- Victorian Health Promotion Foundation Carlton South VIC Australia
| | - D. H. Coyle
- School of Health Sciences Faculty of Health and Medicine Priority Research Centre for Physical Activity and Nutrition The University of Newcastle Callaghan NSW Australia
- The George Institute for Global Health University of New South Wales Sydney NSW Australia
| | - J. L. Walker
- School of Human Movement and Nutrition Sciences The University of Queensland St Lucia QLD Australia
| | - C. E. Collins
- School of Health Sciences Faculty of Health and Medicine Priority Research Centre for Physical Activity and Nutrition The University of Newcastle Callaghan NSW Australia
- The University of Newcastle Centre for Evidence Based Healthcare Informing Research (CEBHIR): a Joanna Briggs Institute Centre of Excellence Callaghan NSW Australia
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7
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Calleja M, Caetano Feitoza N, Falk B, Klentrou P, Ward WE, Sullivan PJ, Josse AR. Increased dairy product consumption as part of a diet and exercise weight management program improves body composition in adolescent females with overweight and obesity-A randomized controlled trial. Pediatr Obes 2020; 15:e12690. [PMID: 32602233 DOI: 10.1111/ijpo.12690] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 05/01/2020] [Accepted: 05/26/2020] [Indexed: 02/05/2023]
Abstract
BACKGROUND Exercise can improve body composition in adolescents and adults with overweight/obesity. Consumption of dairy foods, as part of a healthy lifestyle program, can also promote favourable body composition changes in adults with overweight/obesity. However, the few studies examining these combined effects on body composition in adolescents are inconclusive. OBJECTIVE To determine whether increased dairy product consumption, as part of a lifestyle modification program featuring exercise training and dietary guidance promotes favourable body composition changes in adolescent females with overweight/obesity. METHODS Fifty-four participants (age: 14.8 ± 2.2y; BMI percentile: 95th ± 6) assigned to three groups completed the study. There were two experimental groups: recommended dairy (RDa; n = 24) and low dairy (LDa; n = 22), and a no-intervention control group (Con; n = 8). RDa and LDa participated in a 12-week, eucaloric, lifestyle modification intervention consisting of mixed-mode exercise (3x/week), and nutritional counselling. RDa was provided 4 servings/day of dairy foods, while LDa and Con maintained habitually low intakes (0-2 servings/day). Body weight/composition, waist/hip circumference, cardiovascular fitness and food intake were assessed at weeks 0 and 12. RESULTS Weight did not significantly change in any group. RDa significantly decreased fat mass (FM) and increased lean mass (LM) more than LDa and Con (FM: -1.3 ± 2.1 kg, -1.1 ± 2.0 kg, 0.8 ± 1.8 kg; LM: 1.5 ± 1.9 kg, 0.7 ± 1.6 kg, 0.5 ± 1.4 kg, respectively). LDa also significantly decreased FM and increased LM more than Con (P < .005; all interactions). CONCLUSION The inclusion of dairy foods in the diet of adolescent females with overweight/obesity, as part of a diet and exercise intervention, favourably improves body composition in the absence of weight loss.
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Affiliation(s)
- Melissa Calleja
- Department of Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, Canada
| | - Natalie Caetano Feitoza
- Department of Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, Canada
| | - Bareket Falk
- Department of Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, Canada.,Centre for Bone and Muscle Health, Faculty of Applied Health Sciences, Brock University, St. Catharines, Canada
| | - Panagiota Klentrou
- Department of Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, Canada.,Centre for Bone and Muscle Health, Faculty of Applied Health Sciences, Brock University, St. Catharines, Canada
| | - Wendy E Ward
- Department of Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, Canada.,Centre for Bone and Muscle Health, Faculty of Applied Health Sciences, Brock University, St. Catharines, Canada
| | - Philip J Sullivan
- Department of Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, Canada
| | - Andrea R Josse
- Centre for Bone and Muscle Health, Faculty of Applied Health Sciences, Brock University, St. Catharines, Canada.,School of Kinesiology and Health Science, Faculty of Health, York University, Toronto, Canada
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8
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Stark LJ, Filigno SS, Kichler JC, Bolling C, Ratcliff MB, Robson SM, Simon SL, McCullough MB, Clifford LM, Stough CO, Zion C, Mara CA. Maintenance Following a Randomized Trial of a Clinic and Home-based Behavioral Intervention of Obesity in Preschoolers. J Pediatr 2019; 213:128-136.e3. [PMID: 31230889 PMCID: PMC6765427 DOI: 10.1016/j.jpeds.2019.05.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 04/26/2019] [Accepted: 05/02/2019] [Indexed: 12/11/2022]
Abstract
OBJECTIVE To assess maintenance of improved weight outcomes in preschoolers with obesity 6 and 12 months following a randomized clinical trial comparing a home- and clinic-based behavioral intervention (Learning about Activity and Understanding Nutrition for Child Health [LAUNCH]) to motivational interviewing and standard care. STUDY DESIGN Randomized controlled trial with children between the ages of 2 and 5 years above the 95th percentile for body mass index for age and sex recruited from 27 pediatrician offices across 10 recruitment cycles between March 12, 2012, and June 8, 2015, were followed 6 and 12 months post-treatment. Child and caregiver weight, height, and caloric intake, child physical activity, and home environment were assessed. The primary outcome was maintenance of greater reduction of percent over the 50th percentile body mass index (BMI%50th) by LAUNCH compared with motivational interviewing and standard care at the 6- and 12-month follow-up. RESULTS Significantly lower child BMI%50th was maintained for LAUNCH compared with motivational interviewing at 12-month follow-up and to standard care at the 6-month follow-up; however, the effect sizes were maintained for comparison with standard care at 12-month follow-up. LAUNCH had significantly lower daily caloric intake compared with motivational interviewing and standard care at both follow-ups and maintained significantly fewer high-calorie foods in the home compared with standard care at 6 and 12 months and compared with motivational interviewing at 12 months. However, caloric intake increased by 12% from post-treatment. LAUNCH caregivers did not maintain improved BMI at follow-up. CONCLUSIONS LAUNCH showed success in reducing weight in preschoolers. However, maintaining treatment gains post-treatment is more difficult. Treatment may need to last longer than 6 months to achieve optimal results. TRIAL REGISTRATION Clinicaltrials.gov: NCT01546727.
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Affiliation(s)
- Lori J. Stark
- Department of Pediatrics, Division of Behavioral Medicine
and Clinical Psychology, Cincinnati Children’s Hospital Medical Center and
University of Cincinnati College of Medicine, Cincinnati, OH
| | - Stephanie Spear Filigno
- Department of Pediatrics, Division of Behavioral Medicine
and Clinical Psychology, Cincinnati Children’s Hospital Medical Center and
University of Cincinnati College of Medicine, Cincinnati, OH
| | - Jessica C. Kichler
- Department of Pediatrics, Division of Behavioral Medicine
and Clinical Psychology, Cincinnati Children’s Hospital Medical Center and
University of Cincinnati College of Medicine, Cincinnati, OH
| | | | | | - Shannon M. Robson
- Department of Behavioral Health and Nutrition, University
of Delaware, Newark, Delaware
| | - Stacey L. Simon
- Department of Pediatrics, Division of Pulmonary Medicine,
Children’s Hospital Colorado, Aurora, CO
| | | | - Lisa M. Clifford
- Department of Pediatrics, Division of Behavioral Medicine
and Clinical Psychology, Cincinnati Children’s Hospital Medical Center and
University of Cincinnati College of Medicine, Cincinnati, OH
| | | | - Cynthia Zion
- Department of Pediatrics, Division of Behavioral Medicine
and Clinical Psychology, Cincinnati Children’s Hospital Medical Center and
University of Cincinnati College of Medicine, Cincinnati, OH
| | - Constance A. Mara
- Department of Pediatrics, Division of Behavioral Medicine
and Clinical Psychology, Cincinnati Children’s Hospital Medical Center and
University of Cincinnati College of Medicine, Cincinnati, OH
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9
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A critical review of the role of milk and other dairy products in the development of obesity in children and adolescents. Nutr Res Rev 2018; 32:106-127. [PMID: 30477600 PMCID: PMC6536827 DOI: 10.1017/s0954422418000227] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Existing reviews suggest that milk and other dairy products do not play a role in the development of obesity in childhood, but they do make an important contribution to children’s nutrient intake. It is thus curious that public health advice on the consumption of dairy products for children is often perceived as unclear. The present review aimed to provide an overview of the totality of the evidence on the association between milk and other dairy products, and obesity and indicators of adiposity, in children. Our search identified forty-three cross-sectional studies, thirty-one longitudinal cohort studies and twenty randomised controlled trials. We found that milk and other dairy products are consistently found to be not associated, or inversely associated, with obesity and indicators of adiposity in children. Adjustment for energy intake tended to change inverse associations to neutral. Also, we found little evidence to suggest that the relationship varied by type of milk or dairy product, or age of the children, although there was a dearth of evidence for young children. Only nine of the ninety-four studies found a positive association between milk and other dairy products and body fatness. There may be some plausible mechanisms underlying the effect of milk and other dairy products on adiposity that influence energy and fat balance, possibly through fat absorption, appetite or metabolic activity of gut microbiota. In conclusion, there is little evidence to support a concern to limit the consumption of milk and other dairy products for children on the grounds that they may promote obesity.
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10
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Wald ER, Ewing LJ, Moyer SCL, Eickhoff JC. An Interactive Web-Based Intervention to Achieve Healthy Weight in Young Children. Clin Pediatr (Phila) 2018; 57:547-557. [PMID: 29067819 PMCID: PMC10360456 DOI: 10.1177/0009922817733703] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This prospective, randomized, controlled trial for parents of overweight and obese 3- to 7-year-olds was performed to assess the feasibility of a program promoting healthy eating and lifestyle by targeting parents as agents of change. The intervention was composed of 6-in-person group sessions and a customized website over 12 months. The control group received customary care. The primary outcome was feasibility of the intervention to promote healthy behavior change measured by attendance. The secondary outcome was effectiveness assessed by attaining reduced body mass index (BMI) z scores, healthy behavior changes and increased parent self-efficacy. Seventy-three child-parent dyads were enrolled; 14 parents never attended any sessions. Participation in follow-up assessments did not meet the hypothesized level. Ultimate BMI z scores did not differ between control and intervention groups. Parenting skills did not improve in the intervention group. This intervention to achieve healthy lifestyle changes in children via their parents as "change agents" was unsuccessful.
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Affiliation(s)
- Ellen R Wald
- 1 University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Linda J Ewing
- 2 University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | | | - Jens C Eickhoff
- 1 University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
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11
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Kouvelioti R, Josse AR, Klentrou P. Effects of Dairy Consumption on Body Composition and Bone Properties in Youth: A Systematic Review. Curr Dev Nutr 2017; 1:e001214. [PMID: 29955717 PMCID: PMC5998362 DOI: 10.3945/cdn.117.001214] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 06/02/2017] [Accepted: 07/06/2017] [Indexed: 01/08/2023] Open
Abstract
Background: According to previous reviews, there is no clear evidence on the effects of dairy consumption on body composition and bone properties in pediatric populations. There is a need for further assessment of existing findings and the methodologic quality of studies before summarizing the evidence. Objective: The aim of the study was to assess the quality, methodologies, and substantive findings of randomized controlled trials (RCTs) that examined the effects of dairy consumption on body size, body composition, and bone properties in children and adolescents. Methods: After searching PubMed and Google Scholar up to December 2016, 15 RCTs were retained and included in this systematic review for further analysis. The quality of the included studies was assessed via the Jadad scale; detailed methodologic and statistical characteristics were evaluated, and the main findings were summarized. Results: The effects of dairy consumption were found to be significant for bone structure and nonsignificant for body size and composition. Eight of the 11 RCTs that assessed bone found significant effects (P < 0.05) for bone mineral content and bone mineral density (BMD), with an average 8% increase in BMD after 16 mo of dairy consumption. Conversely, significant effects (P < 0.05) were found only in 2 of the 14 RCTs that focused on body size (i.e., height and weight) and in only 1 of the 11 RCTs that focused on body composition (i.e., lean mass). Conclusions: The systematic consumption of dairy products may benefit bone structure and development, but it does not appear to affect body composition or body size in children and adolescents. On the basis of the Jadad scale, the methodologic quality of the 15 RCTs was rated as good overall. However, there were methodologic disparities and limitations that may have led to nonsignificant results, particularly for body size and composition. Future RCTs designed to address these limitations are warranted.
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Affiliation(s)
- Rozalia Kouvelioti
- Department of Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, Ontario, Canada
| | - Andrea R Josse
- Department of Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, Ontario, Canada
| | - Panagiota Klentrou
- Department of Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, Ontario, Canada
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Mead E, Brown T, Rees K, Azevedo LB, Whittaker V, Jones D, Olajide J, Mainardi GM, Corpeleijn E, O'Malley C, Beardsmore E, Al‐Khudairy L, Baur L, Metzendorf M, Demaio A, Ells LJ. Diet, physical activity and behavioural interventions for the treatment of overweight or obese children from the age of 6 to 11 years. Cochrane Database Syst Rev 2017; 6:CD012651. [PMID: 28639319 PMCID: PMC6481885 DOI: 10.1002/14651858.cd012651] [Citation(s) in RCA: 210] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Child and adolescent overweight and obesity has increased globally, and can be associated with significant short- and long-term health consequences. This is an update of a Cochrane review published first in 2003, and updated previously in 2009. However, the update has now been split into six reviews addressing different childhood obesity treatments at different ages. OBJECTIVES To assess the effects of diet, physical activity and behavioural interventions (behaviour-changing interventions) for the treatment of overweight or obese children aged 6 to 11 years. SEARCH METHODS We searched CENTRAL, MEDLINE, Embase, PsycINFO, CINAHL, LILACS as well as trial registers ClinicalTrials.gov and ICTRP Search Portal. We checked references of studies and systematic reviews. We did not apply any language restrictions. The date of the last search was July 2016 for all databases. SELECTION CRITERIA We selected randomised controlled trials (RCTs) of diet, physical activity, and behavioural interventions (behaviour-changing interventions) for treating overweight or obese children aged 6 to 11 years, with a minimum of six months' follow-up. We excluded interventions that specifically dealt with the treatment of eating disorders or type 2 diabetes, or included participants with a secondary or syndromic cause of obesity. DATA COLLECTION AND ANALYSIS Two review authors independently screened references, extracted data, assessed risk of bias, and evaluated the quality of the evidence using the GRADE instrument. We contacted study authors for additional information. We carried out meta-analyses according to the statistical guidelines in the Cochrane Handbook for Systematic Reviews of Interventions. MAIN RESULTS We included 70 RCTs with a total of 8461 participants randomised to either the intervention or control groups. The number of participants per trial ranged from 16 to 686. Fifty-five trials compared a behaviour-changing intervention with no treatment/usual care control and 15 evaluated the effectiveness of adding an additional component to a behaviour-changing intervention. Sixty-four trials were parallel RCTs, and four were cluster RCTs. Sixty-four trials were multicomponent, two were diet only and four were physical activity only interventions. Ten trials had more than two arms. The overall quality of the evidence was low or very low and 62 trials had a high risk of bias for at least one criterion. Total duration of trials ranged from six months to three years. The median age of participants was 10 years old and the median BMI z score was 2.2.Primary analyses demonstrated that behaviour-changing interventions compared to no treatment/usual care control at longest follow-up reduced BMI, BMI z score and weight. Mean difference (MD) in BMI was -0.53 kg/m2 (95% confidence interval (CI) -0.82 to -0.24); P < 0.00001; 24 trials; 2785 participants; low-quality evidence. MD in BMI z score was -0.06 units (95% CI -0.10 to -0.02); P = 0.001; 37 trials; 4019 participants; low-quality evidence and MD in weight was -1.45 kg (95% CI -1.88 to -1.02); P < 0.00001; 17 trials; 1774 participants; low-quality evidence.Thirty-one trials reported on serious adverse events, with 29 trials reporting zero occurrences RR 0.57 (95% CI 0.17 to 1.93); P = 0.37; 4/2105 participants in the behaviour-changing intervention groups compared with 7/1991 participants in the comparator groups). Few trials reported health-related quality of life or behaviour change outcomes, and none of the analyses demonstrated a substantial difference in these outcomes between intervention and control. In two trials reporting on minutes per day of TV viewing, a small reduction of 6.6 minutes per day (95% CI -12.88 to -0.31), P = 0.04; 2 trials; 55 participants) was found in favour of the intervention. No trials reported on all-cause mortality, morbidity or socioeconomic effects, and few trials reported on participant views; none of which could be meta-analysed.As the meta-analyses revealed substantial heterogeneity, we conducted subgroup analyses to examine the impact of type of comparator, type of intervention, risk of attrition bias, setting, duration of post-intervention follow-up period, parental involvement and baseline BMI z score. No subgroup effects were shown for any of the subgroups on any of the outcomes. Some data indicated that a reduction in BMI immediately post-intervention was no longer evident at follow-up at less than six months, which has to be investigated in further trials. AUTHORS' CONCLUSIONS Multi-component behaviour-changing interventions that incorporate diet, physical activity and behaviour change may be beneficial in achieving small, short-term reductions in BMI, BMI z score and weight in children aged 6 to 11 years. The evidence suggests a very low occurrence of adverse events. The quality of the evidence was low or very low. The heterogeneity observed across all outcomes was not explained by subgrouping. Further research is required of behaviour-changing interventions in lower income countries and in children from different ethnic groups; also on the impact of behaviour-changing interventions on health-related quality of life and comorbidities. The sustainability of reduction in BMI/BMI z score and weight is a key consideration and there is a need for longer-term follow-up and further research on the most appropriate forms of post-intervention maintenance in order to ensure intervention benefits are sustained over the longer term.
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Affiliation(s)
- Emma Mead
- Teesside UniversityHealth and Social Care InstituteMiddlesbroughUKTS1 3BA
| | - Tamara Brown
- Teesside UniversityHealth and Social Care InstituteMiddlesbroughUKTS1 3BA
- Durham University Queen's CampusSchool of Medicine, Pharmacy and HealthDurhamUKTS17 6BH
| | - Karen Rees
- Warwick Medical School, University of WarwickDivision of Health SciencesCoventryUKCV4 7AL
| | - Liane B Azevedo
- Teesside UniversityHealth and Social Care InstituteMiddlesbroughUKTS1 3BA
| | - Victoria Whittaker
- Teesside UniversityHealth and Social Care InstituteMiddlesbroughUKTS1 3BA
| | - Dan Jones
- Teesside UniversityHealth and Social Care InstituteMiddlesbroughUKTS1 3BA
| | - Joan Olajide
- Teesside UniversityHealth and Social Care InstituteMiddlesbroughUKTS1 3BA
| | - Giulia M Mainardi
- School of Medicine, University of São PauloDepartment of Preventive MedicineSão PauloBrazilCEP 01246 903
| | - Eva Corpeleijn
- University Medical Centre GroningenDepartment of EpidemiologyHanzeplein 1GroningenNetherlands9713 GZ
| | - Claire O'Malley
- Durham University Queen's CampusSchool of Medicine, Pharmacy and HealthDurhamUKTS17 6BH
| | | | - Lena Al‐Khudairy
- Warwick Medical School, University of WarwickDivision of Health SciencesCoventryUKCV4 7AL
| | - Louise Baur
- The University of SydneyDepartment of Paediatrics and Child HealthLocked Bag 4001WestmeadAustraliaNSW 2145
| | - Maria‐Inti Metzendorf
- Institute of General Practice, Medical Faculty of the Heinrich‐Heine‐University DüsseldorfCochrane Metabolic and Endocrine Disorders GroupMoorenstr. 5DüsseldorfGermany40225
| | | | - Louisa J Ells
- Teesside UniversityHealth and Social Care InstituteMiddlesbroughUKTS1 3BA
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13
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Racey M, Bransfield J, Capello K, Field D, Kulak V, Machmueller D, Preyde M, Newton G. Barriers and Facilitators to Intake of Dairy Products in Adolescent Males and Females With Different Levels of Habitual Intake. Glob Pediatr Health 2017; 4:2333794X17694227. [PMID: 28540345 PMCID: PMC5433667 DOI: 10.1177/2333794x17694227] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 09/30/2016] [Accepted: 10/28/2016] [Indexed: 12/02/2022] Open
Abstract
Background: Dairy products and alternatives can contribute to overall good health including positive body composition and decreased adiposity; however, these foods are grossly underconsumed by youth, and worldwide, almost 25% of children are overweight or obese. Objective: The study investigated the barriers and facilitators toward dairy consumption by Grade 7 youth. Methods: Thirty 50-minute, audio-recorded focus groups were conducted with 134 students in eight Grade 7 classes across 5 elementary schools. Focus groups were led by trained facilitators in the elementary schools and participants were separated based on dairy consumption and gender. Recorded data were transcribed and thematically analyzed using qualitative analysis software to identify themes related to barriers and facilitators to dairy product intake by each gender. Results: Factors considered important by males and females across different levels of habitual intake include personal knowledge about dairy products and misconceptions regarding dairy foods and their associated health benefits; food characteristics, including taste; personal behaviors such as habits or routines including dairy products; social environments including parental and peer influence; physical environments factors such as availability and skipping meals; and the convenience of dairy products. Interestingly, only males noted sports as a positive influence for dairy product intake. Also, there were differences in the way males and females perceived dining out as affecting their dairy intake. Conclusion: Results suggest several potential factors that nutrition education interventions aiming to increase dairy consumption could target.
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Affiliation(s)
- Megan Racey
- University of Guelph, Guelph, Ontario, Canada
| | | | | | - David Field
- University of Guelph, Guelph, Ontario, Canada
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14
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Cohen TR, Hazell TJ, Vanstone CA, Rodd C, Weiler HA. A family-centered lifestyle intervention for obese six- to eight-year-old children: Results from a one-year randomized controlled trial conducted in Montreal, Canada. Canadian Journal of Public Health 2016; 107:e453-e460. [PMID: 28026713 DOI: 10.17269/cjph.107.5470] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 09/21/2016] [Accepted: 07/16/2016] [Indexed: 01/09/2023]
Abstract
OBJECTIVES Childhood obesity interventions should be family-centered and focused on lifestyle behaviours that achieve sustainable reductions in adiposity. The primary objective of this randomized controlled trial was to test a family-centered lifestyle intervention using Canada's Food and Physical Activity (PA) Guidelines to reduce body mass index-for-age z-scores (BAZ) in overweight and obese (OW/OB) children. METHODS Children (n = 78; ages 6-8.5 years) were randomized to standard (StnTx) or modified (ModTx) interventions or control (Ctrl). Measurements at baseline and every three months for one year included: anthropometry, BAZ, waist circumference (WC), and dual-energy X-ray absorptiometry scans for percent body fat (%BF), fat mass (FM) and trunk fat mass. Fatty acids measured by gas chromatography were used to assess compliance to the milk and alternatives interventions during the first six months. Six intervention sessions were based on Canada's Food and PA Guidelines and individualized to meet the needs of the family. ModTx were advised to consume four milk and alternatives/day versus the recommended two (StnTx) and to preferentially engage in daily weight-bearing PA. Ctrl were provided the guidelines. RESULTS Baseline anthropometry did not differ among groups. At 12 months (n = 73), all groups increased height (p < 0.001) and lean mass (p < 0.001). ModTx decreased BAZ (p < 0.001); %BF decreased in ModTx (p = 0.018), but not in StnTx (p = 0.997) or Ctrl (p = 0.998). FM, WC and trunk fat mass all significantly increased in Ctrl (p < 0.001). At baseline and three months, fatty acids did not differ among groups, however they did decrease in ModTx at six months [C14:0 (-0.07%, p = 0.053), C15:0 (-0.04%, p = 0.049), C17:0 (-0.09%, p = 0.036)]. CONCLUSION Participating in a family centered-lifestyle intervention that focused on Canadian dietary and PA Guidelines and emphasized increasing milk and alternatives and weight-bearing PA had positive effects on reducing adiposity in OW/OB children. Guidelines are appropriate for the obese pediatric population but need to be individualized to meet the needs of the family. Additional studies are warranted to test the use of biochemical indices to assess compliance to milk and alternative intakes in OW/OB children participating in lifestyle interventions.
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Affiliation(s)
- Tamara R Cohen
- School of Dietetics and Human Nutrition, Macdonald Campus, McGill University.
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15
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Nezami M, Segovia-Siapco G, Beeson WL, Sabaté J. Associations between Consumption of Dairy Foods and Anthropometric Indicators of Health in Adolescents. Nutrients 2016; 8:nu8070427. [PMID: 27420094 PMCID: PMC4963903 DOI: 10.3390/nu8070427] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 06/11/2016] [Accepted: 07/07/2016] [Indexed: 12/11/2022] Open
Abstract
Childhood obesity is associated with a greater chance of a lifetime of obesity. Evidence suggests dairy at recommended levels could be beneficial in maintaining normal weight and body composition. We assessed whether dairy consumption is associated with anthropometric indicators of health (z-scores for weight-for-age (WAZ); height-for-age (HAZ) and body mass index (BMIZ); waist-to-height ratio (WHtR); fat-free mass (FFM); and fat mass (FM)) in adolescents. In a cross-sectional study, 536 males and females ages 12–18 completed a 151-item semi-quantitative web-based food frequency questionnaire that included 34 dairy-containing foods. Dairy foods were categorized into milk, cheese, sweetened dairy, and total dairy. Anthropometrics were measured during school visits. Total dairy intake was associated with WAZ (β = 0.25 (95% CI: 0.01, 0.49), p = 0.045) and HAZ (β = 0.28 (95% CI: 0.04, 0.52), p = 0.021). In boys, total dairy was associated with WHtR (β = 0.02 (95% CI: 0.00, 0.04), p = 0.039), FFM (β = 4.83 (95% CI: 1.79, 7.87), p = 0.002), and FM (β = 3.89 (95% CI: 0.58, 7.21), p = 0.021), and cheese was associated with FFM (β = 4.22 (95% CI: 0.98, 7.47), p = 0.011). Dairy consumption seems to influence growth in both genders, and body composition and central obesity in boys. Prospective studies are needed to identify how types of dairy relate to growth, body composition, and central obesity of adolescents.
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Affiliation(s)
- Manijeh Nezami
- Center for Nutrition, Healthy Lifestyles, and Disease Prevention, Loma Linda University, Loma Linda, CA 92350, USA.
| | - Gina Segovia-Siapco
- Center for Nutrition, Healthy Lifestyles, and Disease Prevention, Loma Linda University, Loma Linda, CA 92350, USA.
| | - W Lawrence Beeson
- Center for Nutrition, Healthy Lifestyles, and Disease Prevention, Loma Linda University, Loma Linda, CA 92350, USA.
| | - Joan Sabaté
- Center for Nutrition, Healthy Lifestyles, and Disease Prevention, Loma Linda University, Loma Linda, CA 92350, USA.
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16
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Towner EK, Clifford LM, McCullough MB, Stough CO, Stark LJ. Treating Obesity in Preschoolers: A Review and Recommendations for Addressing Critical Gaps. Pediatr Clin North Am 2016; 63:481-510. [PMID: 27261546 PMCID: PMC6246919 DOI: 10.1016/j.pcl.2016.02.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Developing interventions targeting obesity reduction in preschoolers is an emergent area. Although intensive, multicomponent interventions seem a promising approach to preschool obesity reduction, this review identifies and discusses approaches to 3 critical gaps (poor reach to families from low-income and minority backgrounds, lack of sufficient evidence to determine the most effective and efficient treatment components and approaches to treating obesity in early childhood, and lack of consensus on how best to discern intervention effectiveness) that need to be addressed to advance the preschool obesity literature.
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Affiliation(s)
- Elizabeth K Towner
- Department of Family Medicine and Public Health Sciences, Wayne State University School of Medicine, Wayne State University, IBio 6135 Woodward Avenue, H206, Detroit, MI 48202, USA.
| | - Lisa M Clifford
- Department of Clinical and Health Psychology, College of Public Health & Health Professions, University of Florida, P.O. Box 100165, Gainesville, FL 32610-0165, USA
| | - Mary Beth McCullough
- Division of Behavioral Medicine & Clinical Psychology, Cincinnati Children's Hospital Medical Center, MLC 7039, 3333 Burnet Avenue, Cincinnati, OH 45229-3039, USA
| | - Cathleen Odar Stough
- Division of Behavioral Medicine & Clinical Psychology, Cincinnati Children's Hospital Medical Center, MLC 7039, 3333 Burnet Avenue, Cincinnati, OH 45229-3039, USA
| | - Lori J Stark
- Division of Behavioral Medicine & Clinical Psychology, Cincinnati Children's Hospital Medical Center, MLC 3015, 3333 Burnet Avenue, Cincinnati, OH 45229-3039, USA
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17
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Colquitt JL, Loveman E, O'Malley C, Azevedo LB, Mead E, Al‐Khudairy L, Ells LJ, Metzendorf M, Rees K. Diet, physical activity, and behavioural interventions for the treatment of overweight or obesity in preschool children up to the age of 6 years. Cochrane Database Syst Rev 2016; 3:CD012105. [PMID: 26961576 PMCID: PMC6669248 DOI: 10.1002/14651858.cd012105] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Child overweight and obesity has increased globally, and can be associated with short- and long-term health consequences. OBJECTIVES To assess the effects of diet, physical activity, and behavioural interventions for the treatment of overweight or obesity in preschool children up to the age of 6 years. SEARCH METHODS We performed a systematic literature search in the databases Cochrane Library, MEDLINE, EMBASE, PsycINFO, CINAHL, and LILACS, as well as in the trial registers ClinicalTrials.gov and ICTRP Search Portal. We also checked references of identified trials and systematic reviews. We applied no language restrictions. The date of the last search was March 2015 for all databases. SELECTION CRITERIA We selected randomised controlled trials (RCTs) of diet, physical activity, and behavioural interventions for treating overweight or obesity in preschool children aged 0 to 6 years. DATA COLLECTION AND ANALYSIS Two review authors independently assessed risk of bias, evaluated the overall quality of the evidence using the GRADE instrument, and extracted data following the Cochrane Handbook for Systematic Reviews of Interventions. We contacted trial authors for additional information. MAIN RESULTS We included 7 RCTs with a total of 923 participants: 529 randomised to an intervention and 394 to a comparator. The number of participants per trial ranged from 18 to 475. Six trials were parallel RCTs, and one was a cluster RCT. Two trials were three-arm trials, each comparing two interventions with a control group. The interventions and comparators in the trials varied. We categorised the comparisons into two groups: multicomponent interventions and dietary interventions. The overall quality of the evidence was low or very low, and six trials had a high risk of bias on individual 'Risk of bias' criteria. The children in the included trials were followed up for between six months and three years.In trials comparing a multicomponent intervention with usual care, enhanced usual care, or information control, we found a greater reduction in body mass index (BMI) z score in the intervention groups at the end of the intervention (6 to 12 months): mean difference (MD) -0.3 units (95% confidence interval (CI) -0.4 to -0.2); P < 0.00001; 210 participants; 4 trials; low-quality evidence, at 12 to 18 months' follow-up: MD -0.4 units (95% CI -0.6 to -0.2); P = 0.0001; 202 participants; 4 trials; low-quality evidence, and at 2 years' follow-up: MD -0.3 units (95% CI -0.4 to -0.1); 96 participants; 1 trial; low-quality evidence.One trial stated that no adverse events were reported; the other trials did not report on adverse events. Three trials reported health-related quality of life and found improvements in some, but not all, aspects. Other outcomes, such as behaviour change and parent-child relationship, were inconsistently measured.One three-arm trial of very low-quality evidence comparing two types of diet with control found that both the dairy-rich diet (BMI z score change MD -0.1 units (95% CI -0.11 to -0.09); P < 0.0001; 59 participants) and energy-restricted diet (BMI z score change MD -0.1 units (95% CI -0.11 to -0.09); P < 0.0001; 57 participants) resulted in greater reduction in BMI than the comparator at the end of the intervention period, but only the dairy-rich diet maintained this at 36 months' follow-up (BMI z score change in MD -0.7 units (95% CI -0.71 to -0.69); P < 0.0001; 52 participants). The energy-restricted diet had a worse BMI outcome than control at this follow-up (BMI z score change MD 0.1 units (95% CI 0.09 to 0.11); P < 0.0001; 47 participants). There was no substantial difference in mean daily energy expenditure between groups. Health-related quality of life, adverse effects, participant views, and parenting were not measured.No trial reported on all-cause mortality, morbidity, or socioeconomic effects.All results should be interpreted cautiously due to their low quality and heterogeneous interventions and comparators. AUTHORS' CONCLUSIONS Muticomponent interventions appear to be an effective treatment option for overweight or obese preschool children up to the age of 6 years. However, the current evidence is limited, and most trials had a high risk of bias. Most trials did not measure adverse events. We have identified four ongoing trials that we will include in future updates of this review.The role of dietary interventions is more equivocal, with one trial suggesting that dairy interventions may be effective in the longer term, but not energy-restricted diets. This trial also had a high risk of bias.
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Affiliation(s)
- Jill L Colquitt
- Effective Evidence LLP7 Bournemouth RoadChandlers FordEastleighUKSO53 3DA
| | - Emma Loveman
- Effective Evidence LLP7 Bournemouth RoadChandlers FordEastleighUKSO53 3DA
| | - Claire O'Malley
- Queen's University, Durham UniversitySchool of Medicine and Health, Wolfson Research InstituteUniversity BoulevardThornabyStockton‐on‐TeesUKTS17 6BH
| | - Liane B Azevedo
- Teesside UniversityHealth and Social Care InstituteMiddlesbroughUKTS1 3BA
| | - Emma Mead
- Teesside UniversityHealth and Social Care InstituteMiddlesbroughUKTS1 3BA
| | - Lena Al‐Khudairy
- Warwick Medical School, University of WarwickDivision of Health SciencesCoventryUKCV4 7AL
| | - Louisa J Ells
- Teesside UniversityHealth and Social Care InstituteMiddlesbroughUKTS1 3BA
| | - Maria‐Inti Metzendorf
- Institute of General Practice, Medical Faculty of the Heinrich‐Heine‐University DüsseldorfCochrane Metabolic and Endocrine Disorders GroupMoorenstr. 5DüsseldorfGermany40225
| | - Karen Rees
- Warwick Medical School, University of WarwickDivision of Health SciencesCoventryUKCV4 7AL
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18
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Foster BA, Farragher J, Parker P, Sosa ET. Treatment Interventions for Early Childhood Obesity: A Systematic Review. Acad Pediatr 2015; 15:353-61. [PMID: 26142067 PMCID: PMC4491410 DOI: 10.1016/j.acap.2015.04.037] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2014] [Revised: 04/23/2015] [Accepted: 04/30/2015] [Indexed: 01/29/2023]
Abstract
CONTEXT With 25% of preschool-age children in the United States being overweight or obese, effective interventions for these children would have significant public health implications. Randomized trials targeting this age group have been performed since the last systematic review. OBJECTIVE To systematically review the literature on treatment interventions for overweight or obesity in preschool-age children. DATA SOURCES Medline (1948-July 2014), the Cochrane Central Registry (1991-July 2014), CINAHL (1990-July2014), and PAS abstracts (2000-2014). STUDY SELECTION Inclusion criteria were children aged 0 to 6 in the study and adiposity as an outcome. Exclusions were having normal-weight children in the trial and not having a comparison group. DATA EXTRACTION Data were extracted independently by 2 authors using a template. RESULTS The initial search yielded 1981 results, narrowed to 289 abstracts after initial review. Further analysis and cross-referencing led to the selection of 6 randomized controlled trials representing 1222 children. Two studies used systems changes and motivational interviewing and showed no significant effect on adiposity. Two studies used an intensive, multidisciplinary approach over 6 months and demonstrated significant decreases in adiposity. One study tested parental coaching and showed a significant reduction in adiposity at 6 months. One study used education on a dairy-rich diet and showed a possible effect on adiposity. LIMITATIONS The study designs were too heterogeneous for meta-analysis; few ethnic minority subjects were included. CONCLUSIONS Multidisciplinary, intensive interventions have some evidence of efficacy in reducing adiposity in preschool children.
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Affiliation(s)
- Byron A Foster
- Department of Pediatrics, University of Texas Health Science Center at San Antonio, San Antonio, Tex.
| | - Jill Farragher
- Department of Pediatrics, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Dr. MC 7803, San Antonio, TX 78229
| | - Paige Parker
- Department of Pediatrics, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Dr. MC 7803, San Antonio, TX 78229
| | - Erica T. Sosa
- Department of Kinesiology, Health and Nutrition, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249
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van Hoek E, Feskens EJM, Bouwman LI, Janse AJ. Effective interventions in overweight or obese young children: systematic review and meta-analysis. Child Obes 2014; 10:448-60. [PMID: 25333421 DOI: 10.1089/chi.2013.0149] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Treatment programs for overweight and obese young children are of variable effectiveness, and the characteristics of effective programs are unknown. In this systematic review with meta-analysis, the effectiveness of treatment programs for these children is summarized. METHODS PubMed, Embase, Web of Science, and PsycINFO databases were searched up to April 2012. Articles reporting the effect of treatment on the body weight of overweight or obese children with a mean age in the range of 3-<8 years are included. Studies reporting the change in BMI z-score with standard error were included in a meta-analysis. For this purpose, a random-effects model was used. RESULTS The search identified 11,250 articles, of which 27 were included in this review. Eleven studies, including 20 treatment programs with 1015 participants, were eligible for the meta-analysis. The pooled intervention effect showed high heterogeneity; therefore, subgroup analysis was performed. Subgroup analysis showed that program intensity and used components partly explained the heterogeneity. The subgroup with two studies using multicomponent treatment programs (combining dietary and physical activity education and behavioral therapy) of moderate or high intensity showed the largest pooled change in BMI z-score (-0.46; I2, 0%). CONCLUSION Although the subgroup multicomponent treatment programs of moderate to high intensity contained only two studies, these treatment programs appeared to be most effective in treating overweight young children.
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Affiliation(s)
- Esther van Hoek
- 1 Department of Pediatrics, Gelderse Vallei Hospital , Ede, The Netherlands
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Mühlig Y, Wabitsch M, Moss A, Hebebrand J. Weight loss in children and adolescents. DEUTSCHES ARZTEBLATT INTERNATIONAL 2014; 111:818-24. [PMID: 25512008 PMCID: PMC4269075 DOI: 10.3238/arztebl.2014.0818] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 09/10/2014] [Accepted: 09/10/2014] [Indexed: 11/27/2022]
Abstract
BACKGROUND 15% of children and adolescents in Germany are overweight, including 6.3% who are affected by obesity. The efficacy of conservative weight-loss treatments has been demonstrated, but there has not yet been a detailed analysis of their efficacy in terms of the amount of weight loss that can be expected. We re-evaluated the available evidence on this question, with particular attention to the methodological quality of clinical trials, in order to derive information that might be a useful guide for treatment. METHODS We conducted a systematic literature search of Medline for the period May 2008 (final inclusion date for a 2009 Cochrane Review) to December 2013. The identified studies were analyzed qualitatively. RESULTS 48 randomized controlled clinical trials with a total of 5025 participants met the predefined inclusion criteria for this analysis. In the ones that met predefined criteria for methodological quality, conservative weight-loss treatments led to weight loss in amounts ranging from 0.05 to 0.42 BMI z score (standard deviation score of the body mass index) over a period of 12-24 months. Information on trial dropout rates was available for 41 of the 48 trials; the dropout rate was 10% or higher in 27 of these (66% ), and 25% or higher in 9 (22% ). CONCLUSION The available evidence consistently shows that only a modest degree of weight loss can be expected from conservative treatment. Families seeking treatment should be informed of this fact. Future research should focus on determining predictive factors for therapeutic benefit, and on the evaluation of additional types of psychological intervention to promote coping with obesity.
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Affiliation(s)
- Yvonne Mühlig
- Department of Child and Adolescent Psychiatry, LVR-Klinikum Essen, University of Duisburg-Essen
| | - Martin Wabitsch
- Department of Pediatrics and Adolescent Medicine, Division of Pediatric Endocrinology, Diabetes and Obesity Unit, University of Ulm
| | - Anja Moss
- Department of Pediatrics and Adolescent Medicine, Division of Pediatric Endocrinology, Diabetes and Obesity Unit, University of Ulm
| | - Johannes Hebebrand
- Department of Child and Adolescent Psychiatry, LVR-Klinikum Essen, University of Duisburg-Essen
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Dror DK. Dairy consumption and pre-school, school-age and adolescent obesity in developed countries: a systematic review and meta-analysis. Obes Rev 2014; 15:516-27. [PMID: 24655317 DOI: 10.1111/obr.12158] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Revised: 12/15/2013] [Accepted: 01/03/2014] [Indexed: 01/28/2023]
Abstract
Childhood obesity, the primary health problem affecting children in developed countries, has been attributed in part to changes in dietary patterns. Secular trends suggest a decrease in childhood dairy consumption coinciding with the rise in obesity prevalence. The objective of the present systematic review and meta-analysis was to consider evidence of associations between dairy intake and adiposity in pre-schoolers, school-age children and adolescents in developed countries. Of 36 studies included in the systematic review, sufficient data for effect size estimation and inclusion in the meta-analysis were obtained from 22 studies. No significant association was found between dairy intake and adiposity in the aggregated data, although statistical heterogeneity was high (I(2) = 0.72). Among adolescents, however, dairy intake was inversely associated with adiposity (effect size -0.26, [-0.38, -0.14], P < 0.0001). Effect size was not predicted by exposure variable (milk vs. dairy), study design, statistical methods, outcome variables or sex. Interpretation of results was complicated by variability in study methods and insufficient adjustment for relevant confounders, particularly dietary reporting accuracy, sweetened beverage intake and pubertal development. Despite limitations, available data suggest a neutral effect of dairy intake on adiposity during early and middle childhood and a modestly protective effect in adolescence.
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Affiliation(s)
- D K Dror
- Allen Laboratory, ARS Western Human Nutrition Research Center, USDA, Davis, California, USA
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Abreu S, Santos R, Moreira C, Santos PC, Vale S, Soares-Miranda L, Autran R, Mota J, Moreira P. Relationship of milk intake and physical activity to abdominal obesity among adolescents. Pediatr Obes 2014; 9:71-80. [PMID: 23325606 DOI: 10.1111/j.2047-6310.2012.00130.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2012] [Revised: 11/06/2012] [Accepted: 11/07/2012] [Indexed: 01/06/2023]
Abstract
UNLABELLED What is already known about this subject Diet and physical activity (PA) are recognized as important factors to prevent abdominal obesity (AO). Studies have found an inverse relationship between milk intake or milk products and body weight and/or body fat in children and adolescents. Evidence suggests that low levels of PA are associated with AO in youth. What this study adds Our study explored the combined association of milk intake and PA on AO in adolescents, which are most often studied in isolation. Our findings suggested that adolescents with high milk intakes, regardless of whether they were active or low active, were less likely to have AO. Our findings could have a great epidemiological interest and bring important evidence in the field of AO management among adolescents. BACKGROUND Diet and physical activity (PA) are recognized as important factors to prevent abdominal obesity (AO), which is strongly associated with chronic diseases. Some studies have reported an inverse association between milk consumption and AO. OBJECTIVE This study examined the association between milk intake, PA and AO in adolescents. METHODS A cross-sectional study was conducted with 1209 adolescents, aged 15-18 from the Azorean Archipelago, Portugal in 2008. AO was defined by a waist circumference at or above the 90th percentile. Adolescent food intake was measured using a semi-quantitative food frequency questionnaire, and milk intake was categorized as 'low milk intake' (<2 servings per day) or 'high milk intake' (≥2 servings per day). PA was assessed via a self-report questionnaire, and participants were divided into active (>10 points) and low-active groups (≤10 points) on the basis of their reported PA. They were then divided into four smaller groups, according to milk intake and PA: (i) low milk intake/low active; (ii) low milk intake/active; (iii) high milk intake/low active and (iv) high milk intake/active. The association between milk intake, PA and AO was evaluated using logistic regression analysis, and the results were adjusted for demographic, body mass index, pubertal stage and dietary confounders. RESULTS In this study, the majority of adolescents consumed semi-skimmed or skimmed milk (92.3%). The group of adolescents with high level of milk intake and active had a lower proportion of AO than did other groups (low milk intake/low active: 34.2%; low milk intake/active: 26.9%; high milk intake/low active: 25.7%; high milk intake/active: 21.9%, P = 0.008). After adjusting for confounders, low-active and active adolescents with high levels of milk intake were less likely to have AO, compared with low-active adolescents with low milk intake (high milk intake/low active, odds ratio [OR] = 0.412, 95% confidence intervals [CI]: 0.201-0.845; high milk intake/active adolescents, OR = 0.445, 95% CI: 0.235-0.845). CONCLUSION High milk intake seems to have a protective effect on AO, regardless of PA level.
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Affiliation(s)
- S Abreu
- Research Centre in Physical Activity, Health and Leisure, Faculty of Sport, University of Porto, Porto, Portugal
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Dror DK, Allen LH. Dairy product intake in children and adolescents in developed countries: trends, nutritional contribution, and a review of association with health outcomes. Nutr Rev 2013; 72:68-81. [DOI: 10.1111/nure.12078] [Citation(s) in RCA: 156] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Affiliation(s)
- Daphna K Dror
- Allen Laboratory; US Department of Agriculure, Agricultural Research Service Western Human Nutrition Research Center; Davis California USA
| | - Lindsay H Allen
- Allen Laboratory; US Department of Agriculure, Agricultural Research Service Western Human Nutrition Research Center; Davis California USA
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Albuquerque D, Nóbrega C, Manco L. The lactase persistence -13910C>T polymorphism shows indication of association with abdominal obesity among Portuguese children. Acta Paediatr 2013; 102:e153-7. [PMID: 23252911 DOI: 10.1111/apa.12134] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2012] [Revised: 11/14/2012] [Accepted: 12/12/2012] [Indexed: 12/22/2022]
Abstract
AIM The -13910C>T single nucleotide polymorphism located upstream of the lactase gene (LCT) was found tightly associated with lactase persistence in European populations. Recently, it was also associated with body mass index (BMI) and obesity in European adults. The aim of this study was to test the association of -13910C>T polymorphism with obesity-related traits and risk of obesity in children. METHODS We genotyped 580 Portuguese children (6-12-year-olds) for the -13910C>T polymorphism using TaqMan probes by real-time PCR. Anthropometric measurements were assessed in all children. Obesity was defined according to the International Obesity Task Force (IOTF) cut-offs and abdominal obesity using the sex and age-specific ≥90th waist circumference percentile. RESULTS We found indication for an association between the-13910*T allele and children abdominal obesity (odds ratio [OR] = 1.41; 95% confidence intervals [CI]: 1.03-1.94; p = 0.030). Under the dominant model, the indicative association was observed between the LCT-13910 CT/TT genotypes and abdominal obesity, remaining significant after adjustment for age and gender (OR = 1.65; 95% CI: 1.04-2.60; p = 0.029). No association was detected with the risk of obesity (p = 0.350). CONCLUSION Our results suggest that the -13910C>T polymorphism may predispose to abdominal obesity in Portuguese children. The association with BMI or risk of obesity, previously observed in adults, was not confirmed.
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Affiliation(s)
- David Albuquerque
- Department of Life Sciences; Research Centre for Anthropology and Health (CIAS); University of Coimbra; Coimbra Portugal
| | - Clévio Nóbrega
- Center for Neurosciences & Cell Biology (CNC); University of Coimbra; Coimbra Portugal
| | - Licínio Manco
- Department of Life Sciences; Research Centre for Anthropology and Health (CIAS); University of Coimbra; Coimbra Portugal
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de Paula FJA, Rosen CJ. Bone Remodeling and Energy Metabolism: New Perspectives. Bone Res 2013; 1:72-84. [PMID: 26273493 DOI: 10.4248/br201301005] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Accepted: 01/30/2013] [Indexed: 12/27/2022] Open
Abstract
Bone mineral, adipose tissue and energy metabolism are interconnected by a complex and multilevel series of networks. Calcium and phosphorus are utilized for insulin secretion and synthesis of high energy compounds. Adipose tissue store lipids and cholecalciferol, which, in turn, can influence calcium balance and energy expenditure. Hormones long-thought to solely modulate energy and mineral homeostasis may influence adipocytic function. Osteoblasts are a target of insulin action in bone. Moreover, endocrine mediators, such as osteocalcin, are synthesized in the skeleton but regulate carbohydrate disposal and insulin secretion. Finally, osteoblasts and adipocytes originate from the same mesenchymal progenitor. The mutual crosstalk between osteoblasts and adipocytes within the bone marrow microenvironment plays a crucial role in bone remodeling. In the present review we provide an overview of the reciprocal control between bone and energy metabolism and its clinical implications.
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Affiliation(s)
- Francisco J A de Paula
- Department of Internal Medicine, School of Medicine of Ribeirão Preto, University of São Paulo , Brazil
| | - Clifford J Rosen
- Center for Clinical and Translational Research, Maine Medical Center Research Institute , USA
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Abstract
OBJECTIVE To determine the association of beverage consumption with obesity in Mexican American school-aged children. DESIGN Cross-sectional study using the baseline data from a cohort study. Mothers and children answered questions about the frequency and quantity of the child's consumption of soda, diet soda, other sugar-sweetened beverages, 100% fruit juice, milk and water. The questions were adapted from the Youth/Adolescent FFQ. Children were weighed and measured. Data were collected on the following potential confounders: maternal BMI, household income, maternal education, maternal occupational status, maternal acculturation, child physical activity, child screen time and child fast-food consumption. Logistic regression was used to examine the association between servings (240 ml) of each beverage per week and obesity (BMI ≥ 95th percentile). SETTING Participants were recruited from among enrolees of the Kaiser Permanente Health Plan of Northern California. Data were collected via an in-home assessment. SUBJECTS Mexican American children (n 319) aged 8-10 years. RESULTS Among participants, 20% were overweight and 31% were obese. After controlling for potential confounders, consuming more servings of soda was associated with increased odds of obesity (OR = 1·29; P < 0·001). Consuming more servings of flavoured milk per week was associated with lower odds of obesity (OR = 0·88; P = 0·004). Consumption of other beverages was not associated with obesity in the multivariate model. CONCLUSIONS Discouraging soda consumption among Mexican American children may help reduce the high obesity rates in this population.
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Onakpoya IJ, Perry R, Zhang J, Ernst E. Efficacy of calcium supplementation for management of overweight and obesity: systematic review of randomized clinical trials. Nutr Rev 2011; 69:335-43. [PMID: 21631515 DOI: 10.1111/j.1753-4887.2011.00397.x] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Numerous dietary supplements are marketed as slimming aids, but the efficacy of most has not been proven. One such slimming aid is calcium. Presented here are the results of a systematic review that aimed to evaluate the evidence for or against the efficacy of calcium supplements for body-weight reduction in overweight and obese individuals. Electronic searches were conducted to identify relevant randomized clinical trials of at least 6 months duration. No restrictions of age, gender, language, or time of publication were imposed. Two reviewers independently determined the eligibility of studies, assessed the reporting quality of the studies included, and extracted data. Twenty-four eligible trials were identified, and seven were included. Five of the randomized clinical trials included were not of good reporting quality. A meta-analysis revealed a small, significant reduction in body weight for calcium compared with placebo (mean difference, (-) 0.74 kg; 95% confidence interval, (-) 1.00-(-) 0.48). A small, significant reduction in body fat favoring calcium over placebo was also noted (mean difference, (-) 0.93 kg; 95% confidence interval, (-) 1.16-(-) 0.71). In conclusion, the evidence from randomized clinical trials suggests calcium supplementation generates small, statistically significant weight loss in overweight and obese individuals, but the clinical relevance of this finding is uncertain.
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Affiliation(s)
- Igho J Onakpoya
- Complementary Medicine, Peninsula College of Medicine and Dentistry, University of Exeter, Exeter, Devon, United Kingdom.
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Spence LA, Cifelli CJ, Miller GD. The Role of Dairy Products in Healthy Weight and Body Composition in Children and Adolescents. CURRENT NUTRITION & FOOD SCIENCE 2011; 7:40-49. [PMID: 22299005 PMCID: PMC3267168 DOI: 10.2174/157340111794941111] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2010] [Revised: 01/14/2011] [Accepted: 01/19/2011] [Indexed: 11/28/2022]
Abstract
Overweight and obesity are major public health concerns with approximately 32% and 17% of U.S. children aged 2 – 19 being classified as overweight or obese, respectively. While the cause of overweight and obesity is multi-factorial, changes in eating habits and physical activity patterns have been proposed as contributing factors to the obesity epidemic. For example, the displacement of nutrient rich foods and beverages with non-nutrient dense items may be influencing childhood obesity. Many children do not consume the recommended servings of the Food Groups to Encourage, i.e. low-fat and fat-free dairy foods, fruits, vegetables, and whole grains identified by the 2005 Dietary Guidelines for Americans which results in low intakes of calcium, potassium, fiber, magnesium, and vitamin E. While attention has focused primarily on reducing energy intake and/or increasing energy expenditure for weight maintenance, a promising beneficial role for dairy products in weight management has emerged. Most research has focused on adults, but there is evidence in children and adolescents indicating either a beneficial or neutral effect of dairy food consumption on body weight or body composition. The current review provides and assessment of the scientific evidence on the effects of dairy food consumption on body weight and body composition in children and adolescents.
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Affiliation(s)
- Lisa A Spence
- American Dietetic Association, Chicago, Illinois, USA
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