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Hanssen H, Moholdt T, Bahls M, Biffi A, Siegrist M, Lewandowski AJ, Biondi-Zoccai G, Cavarretta E, Kokkvoll A, Løchen ML, Maestrini V, Pinto RS, Palermi S, Thivel D, Wojcik M, Hansen D, Van Craenenbroeck EM, Weghuber D, Kraenkel N, Tiberi M. Lifestyle interventions to change trajectories of obesity-related cardiovascular risk from childhood onset to manifestation in adulthood: a joint scientific statement of the task force for childhood health of the European Association of Preventive Cardiology and the European Childhood Obesity Group. Eur J Prev Cardiol 2023; 30:1462-1472. [PMID: 37491406 DOI: 10.1093/eurjpc/zwad152] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 04/20/2023] [Accepted: 05/06/2023] [Indexed: 07/27/2023]
Abstract
There is an immediate need to optimize cardiovascular (CV) risk management and primary prevention of childhood obesity to timely and more effectively combat the health hazard and socioeconomic burden of CV disease from childhood development to adulthood manifestation. Optimizing screening programs and risk management strategies for obesity-related CV risk in childhood has high potential to change disease trajectories into adulthood. Building on a holistic view on the aetiology of childhood obesity, this document reviews current concepts in primary prevention and risk management strategies by lifestyle interventions. As an additional objective, this scientific statement addresses the high potential for reversibility of CV risk in childhood and comments on the use of modern surrogate markers beyond monitoring weight and body composition. This scientific statement also highlights the clinical importance of quantifying CV risk trajectories and discusses the remaining research gaps and challenges to better promote childhood health in a population-based approach. Finally, this document provides an overview on the lessons to be learned from the presented evidence and identifies key barriers to be targeted by researchers, clinicians, and policymakers to put into practice more effective primary prevention strategies for childhood obesity early in life to combat the burden of CV disease later in life.
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Affiliation(s)
- Henner Hanssen
- Department of Sport, Exercise and Health, Medical Faculty, University of Basel, Grosse Allee 6, 4052 Basel, Switzerland
| | - Trine Moholdt
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
- Women's Clinic, St. Olavs Hospital, Trondheim, Norway
| | - Martin Bahls
- Department of Internal Medicine B University Medicine Greifswald, University of Greifswald, Greifswald, Germany
- German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany
| | - Alessandro Biffi
- Med-Ex Medicine & Exercise, Medical Partner Scuderia Ferrari, Rome, Italy
| | - Monika Siegrist
- Department of Prevention and Sports Medicine, School of Medicine, University Hospital 'rechts der Isar', Technical University of Munich, Munich, Germany
| | - Adam J Lewandowski
- Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Giuseppe Biondi-Zoccai
- Department of Medical-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Latina, Italy
- Mediterranea Cardiocentro, Napoli, Italy
| | - Elena Cavarretta
- Department of Medical-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Latina, Italy
- Mediterranea Cardiocentro, Napoli, Italy
| | - Ane Kokkvoll
- Department of Paediatrics, Finnmark Hospital Trust, Hammerfest, Norway
| | - Maja-Lisa Løchen
- Department of Community Medicine, UiT The Arctic University of Norway, Tromsø, Norway
| | - Viviana Maestrini
- Department of Clinical, Internal, Anesthesiology and Cardiovascular Sciences, 'Sapienza' University of Rome, Policlinico Umberto I, Rome, Italy
| | | | - Stefano Palermi
- Med-Ex Medicine & Exercise, Medical Partner Scuderia Ferrari, Rome, Italy
| | - David Thivel
- Laboratory of the Metabolic Adaptations to Exercise under Physiological and Pathological Conditions, Université Clermont Auvergne, Clermont-Ferrand, France
| | - Malgorzata Wojcik
- Department of Pediatric and Adolescent Endocrinology, Jagiellonian University Medical College, Krakow, Poland
| | - Dominique Hansen
- Department of Cardiology, Heart Centre Hasselt, Jessa Hospital, Hasselt, Belgium
- UHasselt, Faculty of Rehabilitation Sciences, BIOMED-REVAL-Rehabilitation Research Centre, Hasselt University, Hasselt, Belgium
| | - Emeline M Van Craenenbroeck
- Research Group Cardiovascular Diseases, GENCOR Department, University of Antwerp, Campus Drie Eiken, Antwerp, Belgium
- Department of Cardiology, Antwerp University Hospital (UZA), Edegem, Belgium
| | - Daniel Weghuber
- Obesity Research Unit, Paracelsus Medical University, Salzburg, Austria
- Department of Pediatrics, Paracelsus Medical University, Salzburg, Austria
| | - Nicolle Kraenkel
- Deutsches Herzzentrum der Charité (DHZC), Department of Cardiology, Angiology and Intensive Care, Campus Benjamin-Franklin (CBF), Berlin, Germany
- German Centre for Cardiovascular Research (DZHK), Partner site Berlin, Germany
- Friede Springer- Cardiovascular Prevention Center @ Charité, Charite- Universitätsmedizin Berlin, Berlin, Germany
| | - Monica Tiberi
- Department of Public Health, Azienda Sanitaria Unica Regionale Marche AV 1, Pesaro, Italy
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Porchia LM, Vazquez-Marroquin G, Ochoa-Précoma R, Pérez-Fuentes R, Gonzalez-Mejia ME. Probiotics' effect on visceral and subcutaneous adipose tissue: a systematic review of randomized controlled trials. Eur J Clin Nutr 2022; 76:1646-1656. [PMID: 35418606 DOI: 10.1038/s41430-022-01135-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 03/22/2022] [Accepted: 03/25/2022] [Indexed: 11/08/2022]
Abstract
Probiotics are shown to alter the microbiota, leading to a favorable environment, in which weight loss and metabolic parameters are improve. However, the results on probiotics' effect on specific types of central adipose tissues, mainly visceral (VAT) and subcutaneous adipose tissue (SAT), are conflicting. Therefore, we conducted a systematic review, aimed to evaluate the effects of probiotics on VAT and SAT. PubMed, SCOPUS, EBSCO, and LILACS databases were searched for studies that investigated the effect of probiotics on VAT and SAT. Fixed effects were used to calculate the pooled difference in means (DM) and 95% confidence intervals (95%CI). Fourteen publications met the inclusion criteria, which consisted of 1523 participants. For VAT, overall, there was a significant decrease (DM = -3.63 cm2, 95% CI: -5.08 to -2.17, p < 0.001). When stratified by type of probiotic, single Bifidobacterium (DM = -4.49 cm2, 95% CI:-7.37 to -1.61, p = 0.002) and single Lactobacillus probiotics (DM = -3.84 cm2, 95% CI:-5.74 to -1.93, p < 0.001) resulted in significant reductions. Mixed probiotics had no effect. For SAT, overall, there was a significant decrease (DM = -2.91 cm2, 95% CI:-4.82 to -1.01, p = 0.003), and when stratified by type of probiotic, single Lactobacillus (DM = -3.39 cm2, 95% CI:-5.90 to -0.88, p = 0.008) and mixed probiotics (DM = -5.97 cm2, 95% CI:-10.32 to -1.62, p = 0.007) resulted in a significant decrease. Single Bifidobacterium probiotics had no effect. Using meta-regression, no association was observed between the total daily probiotic dose and VAT or SAT reduction. This study shows that probiotics have a beneficial effect on central adiposity. Single Lactobacillus-based probiotics reduced VAT and SAT, whereas Bifidobacterium-based probiotics reduce VAT.
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Affiliation(s)
- Leonardo M Porchia
- Laboratorio de Fisiopatología en Enfermedades Crónicas, Centro de investigación Biomédica de Oriente, IMSS. Delegación Puebla, Carretera Federal Atlixco Metepec Km. 4.5, Colonia Centro, C.P, 74360, Atlixco, Puebla, México
| | - Gabriela Vazquez-Marroquin
- Posgrado en Ciencias Biológicas, Universidad Autónoma de Tlaxcala, Carretera Federal Tlaxcala, Puebla. S/N; Km. 1.5, Tlaxcala, Tlaxcala, 90062, Mexico
| | - Renata Ochoa-Précoma
- Facultad de Medicina, Benemérita Universidad Autónoma de Puebla. Calle 13 Sur 2901, Colonia Volcanes, C.P. 72420, Puebla, Puebla, México
| | - Ricardo Pérez-Fuentes
- Laboratorio de Fisiopatología en Enfermedades Crónicas, Centro de investigación Biomédica de Oriente, IMSS. Delegación Puebla, Carretera Federal Atlixco Metepec Km. 4.5, Colonia Centro, C.P, 74360, Atlixco, Puebla, México
- Facultad de Medicina, Benemérita Universidad Autónoma de Puebla. Calle 13 Sur 2901, Colonia Volcanes, C.P. 72420, Puebla, Puebla, México
| | - M Elba Gonzalez-Mejia
- Facultad de Medicina, Benemérita Universidad Autónoma de Puebla. Calle 13 Sur 2901, Colonia Volcanes, C.P. 72420, Puebla, Puebla, México.
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Cadenas-Sanchez C, Cabeza R, Idoate F, Osés M, Medrano M, Villanueva A, Arenaza L, Sanz A, Ortega FB, Ruiz JR, Labayen I. Effects of a Family-Based Lifestyle Intervention Plus Supervised Exercise Training on Abdominal Fat Depots in Children With Overweight or Obesity: A Secondary Analysis of a Nonrandomized Clinical Trial. JAMA Netw Open 2022; 5:e2243864. [PMID: 36441551 PMCID: PMC9706365 DOI: 10.1001/jamanetworkopen.2022.43864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
IMPORTANCE Excess abdominal fat is a major determinant in the development of insulin resistance and other metabolic disorders. Increased visceral adipose tissue (VAT) seems to precede the development of insulin resistance and is therefore a prime target of childhood lifestyle interventions aimed at preventing diabetes. OBJECTIVES To examine the effect of added exercise to a family-based lifestyle intervention program designed to reduce VAT plus subcutaneous (ASAT), intermuscular (IMAAT), and pancreatic (PAT) adipose tissue in children with overweight or obesity and to explore the effect of changes in VAT on insulin resistance. DESIGN, SETTING, AND PARTICIPANTS This 2-group, parallel-design clinical trial was conducted in Vitoria-Gasteiz, Spain. A total of 116 children with overweight or obesity participated and were assigned to a 22-week family-based lifestyle program (control group [n = 57]) or the same program plus an exercise intervention (exercise group [n = 59]). Data were collected between September 1, 2014, and June 30, 2017, and imaging processing for fat depot assessments and data analysis were performed between May 1, 2019, and February 12, 2021. INTERVENTIONS The compared interventions consisted of a family-based lifestyle and psychoeducation program (two 90-minute sessions per month) and the same program plus supervised exercise (three 90-minute sessions per week). MAIN OUTCOMES AND MEASURES The primary outcome of this study was the change in VAT between baseline and 22 weeks as estimated by magnetic resonance imaging. The secondary outcomes were changes in ASAT, IMAAT, and PAT. The effect of changes in VAT area on insulin resistance was also recorded. RESULTS The 116 participants included in the analysis (62 girls [53.4%]) had a mean (SD) age of 10.6 (1.1) years, and 67 (57.8%) presented with obesity. Significantly greater reductions were recorded for the exercise group in terms of reduction in VAT (-18.1% vs -8.5% for the control group; P = .004), ASAT (-9.9% vs -3.0%; P = .001), and IMAAT (-6.0% vs -2.6%; P = .02) fat fractions compared with the control group. Changes in VAT explained 87.6% of the improvement seen in insulin resistance (β = -0.102 [95% CI, -0.230 to -0.002]). CONCLUSIONS AND RELEVANCE These findings suggest that the addition of exercise to a lifestyle intervention program substantially enhanced the positive effects on abdominal fat depots in children with overweight or obesity. In addition, the reduction in VAT seemed to largely mediate the improvement of insulin sensitivity. These results highlight the importance of including exercise as part of lifestyle therapies aimed at treating childhood obesity and preventing the development of type 2 diabetes. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT02258126.
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Affiliation(s)
- Cristina Cadenas-Sanchez
- Institute for Sustainability & Food Chain Innovation, Department of Health Sciences, Public University of Navarre, Pamplona, Spain
- Navarra Institute for Health Research, Pamplona, Spain
- PROFITH (Promoting Fitness and Health Through Physical Activity) Research Group, Sport and Health University Research Institute, Department of Physical and Sports Education, Faculty of Sport Sciences, University of Granada, Granada, Spain
- Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain
| | - Rafael Cabeza
- Department of Electrical, Electronic and Communications Engineering, Public University of Navarre, Pamplona, Spain
| | - Fernando Idoate
- Department of Radiology, Mutua Navarra, Pamplona, Spain
- Department of Health Sciences, Public University of Navarre, Pamplona, Spain
| | - Maddi Osés
- Institute for Sustainability & Food Chain Innovation, Department of Health Sciences, Public University of Navarre, Pamplona, Spain
- Navarra Institute for Health Research, Pamplona, Spain
| | - María Medrano
- Institute for Sustainability & Food Chain Innovation, Department of Health Sciences, Public University of Navarre, Pamplona, Spain
- Navarra Institute for Health Research, Pamplona, Spain
- Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain
| | - Arantxa Villanueva
- Navarra Institute for Health Research, Pamplona, Spain
- Department of Electrical, Electronic and Communications Engineering, Public University of Navarre, Pamplona, Spain
- Smart Cities Institute, Public University of Navarre, Pamplona, Spain
| | - Lide Arenaza
- Institute for Sustainability & Food Chain Innovation, Department of Health Sciences, Public University of Navarre, Pamplona, Spain
- Navarra Institute for Health Research, Pamplona, Spain
| | - Aritz Sanz
- Department of Electrical, Electronic and Communications Engineering, Public University of Navarre, Pamplona, Spain
| | - Francisco B. Ortega
- PROFITH (Promoting Fitness and Health Through Physical Activity) Research Group, Sport and Health University Research Institute, Department of Physical and Sports Education, Faculty of Sport Sciences, University of Granada, Granada, Spain
- Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain
- Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
| | - Jonatan R. Ruiz
- PROFITH (Promoting Fitness and Health Through Physical Activity) Research Group, Sport and Health University Research Institute, Department of Physical and Sports Education, Faculty of Sport Sciences, University of Granada, Granada, Spain
- Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain
- Instituto de Investigación Biosanitaria, ibs.Granada, Granada, Spain
| | - Idoia Labayen
- Institute for Sustainability & Food Chain Innovation, Department of Health Sciences, Public University of Navarre, Pamplona, Spain
- Navarra Institute for Health Research, Pamplona, Spain
- Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain
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Gajardo-Araya G, Hernández-Jaña S, Olivares-Arancibia J, Ferrari G, Delgado-Floody P, Cristi-Montero C. Physical fitness mediates the inverse association between fatness indicators and academic achievement, despite the school vulnerability of adolescents—The Cogni-Action Project. Front Nutr 2022; 9:904831. [PMID: 36386944 PMCID: PMC9643798 DOI: 10.3389/fnut.2022.904831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 09/27/2022] [Indexed: 12/04/2022] Open
Abstract
Objective This study aims to determine the mediating role of physical fitness in the relationship between fatness indicators and academic achievement, exploring the influence of school vulnerability. Methods A total of 1,296 Chilean adolescents (aged 10 to 14 years; 50% girls) participated in this study. The global fitness score (GFS) was obtained by adding the three main components of the ALPHA fitness test: cardiorespiratory fitness (CRF), muscular fitness (MF), and speed/agility fitness (SAF). CRF was evaluated through the 20 m shuttle run test; MF by upper and lower limb strength tests; and SAF by the 4 × 10 shuttle run test. BMIz and WHtR were evaluated as general (unspecific) and central (specific) fatness indicators. Academic achievement was established through grades in math, language, and science and their average scores. Multiple mediation analyses were performed according to two models, adjusted for sex, maturity, and schools (model 1), and in model 2, the school vulnerability index (SVI) was added. The SVI is an important proxy of socioeconomic status at the school level, and it was categorized as high-, mid-, or low-SVI. Mediation percentages were calculated, and confidence intervals (bootstrapping) were used to establish significant findings. Results CRF, SAF, and GFS mediate the relationship between fatness indicators and academic achievement, both partially and totally (ranging from 12.7 to 59.2%). However, MF did not show any mediation effect. After controlling for SVI, CRF, and GFS, mediation changed from partial to total in the associations between math and science with WHtR. Although SAF contributed to GFS mediation, CRF seems to have the most significant mediation role for all academic achievements, regardless of SVI and the fat indicator studied. Conclusion A higher level of general physical fitness, especially CRF, significantly mediates the detrimental influence of fatness on the academic achievement of schoolchildren. This study suggests that physical fitness plays a relevant role in academic and public health, considering the high prevalence and detrimental influence of obesity and school vulnerability in children and adolescents.
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Affiliation(s)
- Guillermo Gajardo-Araya
- Magíster en Educación, Mención Política y Gestión Educativa, Facultad de Filosofía y Humanidades, Universidad Austral de Chile, Valdivia, Chile
- IRyS Group, Physical Education School, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Sam Hernández-Jaña
- IRyS Group, Physical Education School, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Jorge Olivares-Arancibia
- IRyS Group, Physical Education School, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
- Grupo AFySE, Investigación en Actividad Física y Salud Escolar, Escuela de Pedagogía en Educación Física, Facultad de Educación, Universidad de Las Américas, Santiago, Chile
| | - Gerson Ferrari
- Escuela de Ciencias de la Actividad Física, el Deporte y la Salud, Universidad de Santiago de Chile (USACH), Santiago, Chile
| | - Pedro Delgado-Floody
- Department of Physical Education, Sport, and Recreation, Universidad de La Frontera, Temuco, Chile
| | - Carlos Cristi-Montero
- IRyS Group, Physical Education School, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
- *Correspondence: Carlos Cristi-Montero,
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Cao M, Tang Y, Zou Y. Integrating High-Intensity Interval Training into a School Setting Improve Body Composition, Cardiorespiratory Fitness and Physical Activity in Children with Obesity: A Randomized Controlled Trial. J Clin Med 2022; 11:jcm11185436. [PMID: 36143083 PMCID: PMC9506281 DOI: 10.3390/jcm11185436] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/11/2022] [Accepted: 09/13/2022] [Indexed: 11/16/2022] Open
Abstract
The aim of this study was to examine the effects of school-based high-intensity interval training (HIIT) on cardiorespiratory fitness and visceral adipose tissue (VAT) in children with obesity. A total of 40 students (11.0 ± 0.6 years; 20 boys) were randomized into an intervention group (IG) and control group (CG). The IG group performed a 12-week HIIT intervention with three sessions per week. Each session included 18 min of training (three sets of eight bouts of 15 s run at 100% maximal aerobic speed (MAS) separated by eight bouts of 15 s recovery run at 50% MAS) in PE class; the CG group were instructed to continue their normal behaviors. All subjects had indices of body mass index (BMI), fat mass (FM), body fat percentage (%BF), fat free mass (FFM), VAT, and maximal oxygen uptake (VO2max) measured at baseline and post-intervention. The cooperation of students was high, and all 40 students were included in the final analysis. A significant group−time interaction was determined in body composition (p < 0.05), with a significant decrease in BM (−3.4 ± 1.4 kg, p = 0.001; η2 = 0.63), BMI (−1.7 ± 0.5, p = 0.001; η2 = 0.58), %BF (−3.3 ± 1.4, p = 0.001; η2 = 0.54), and FM (−3.2 ± 1.4 kg, p = 0.001; η2 = 0.69), and VAT (−22.4 ± 9.8 cm2; p = 0.001; η2 = 0.61) in the IG. Furthermore, VO2max exhibited a significant increase in the IG (4.5 ± 1.6 mL/kg/min, p = 0.001; η2 = 0.84) and CG groups (1.7 ± 1.1 mL/kg/min, p = 0.001; η2 = 0.44). Integrating regular school-based HIIT sessions is a suitable method to improve body composition, cardiorespiratory fitness, and physical activity in students with obesity. Trial Registration: ChiCTR2100048737.
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Affiliation(s)
- Meng Cao
- Department of Physical Education, College of Sport, Shenzhen University, Shenzhen 518061, China
- Correspondence:
| | - Yucheng Tang
- Department of Sport and Exercise Science, College of Education, Zhejiang University, Hangzhou 310027, China
| | - Yu Zou
- Department of Sport and Exercise Science, College of Education, Zhejiang University, Hangzhou 310027, China
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Summer SS, Jenkins T, Inge T, Deka R, Khoury JC. Association of diet quality, physical activity, and abdominal obesity with metabolic syndrome z-score in black and white adolescents in the US. Nutr Metab Cardiovasc Dis 2022; 32:346-354. [PMID: 34953632 PMCID: PMC8802754 DOI: 10.1016/j.numecd.2021.10.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 10/18/2021] [Accepted: 10/27/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND AND AIMS Metabolic syndrome (MetS) affects ∼10% of adolescents and is associated with cardiometabolic disease risk. The most prevalent MetS component is abdominal obesity. Healthy diet and physical activity (PA) are inversely associated with abdominal obesity and may reduce MetS risk in youth. Our aim was to examine associations of diet, activity, and abdominal obesity with MetS z-score (MetS-z). METHODS AND RESULTS An analysis of National Health and Nutrition Examination Survey (NHANES) 2011-2016 data in adolescents was performed. Healthy Eating Index (HEI)- 2015 scores were calculated for diet quality, PA habits were used to determine alignment with national guidelines, and abdominal obesity was assessed by sagittal abdominal diameter (SAD). MetS-z represented severity or potential risk for MetS. Multivariable regression evaluated the relationships of HEI, SAD and PA with MetS-z. Among 1214 black and white adolescents, SAD was significantly associated with MetS-z [β (95% CI) = 0.17 (0.16, 0.19); P <0.0001] while HEI-2015 components showed associations with MetS-z overall (HEI total, dairy, and sodium scores), and by sex (total, refined grains, dairy for males; added sugar, protein, whole grains for females). Mean HEI-2015 score was 47.4/100 (51.6 using the population-ratio method), and the proportion of adolescents meeting national PA guidelines was 37.6%, yet PA was not a significant predictor of MetS-z. CONCLUSIONS US adolescents have poor diet quality and fewer than half meet PA guidelines. Strategies for preventing MetS and related conditions in adolescence should focus on weight management - specifically, abdominal fat reduction - with individualized diet counseling.
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Affiliation(s)
- Suzanne S Summer
- Center for Clinical and Translational Science and Training, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
| | - Todd Jenkins
- Division of Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Thomas Inge
- Akers Endowed Chair and Director of Pediatric Surgery, Children's Hospital Colorado and University of Colorado, Denver, CO, USA
| | - Ranjan Deka
- Department of Environmental and Public Health Sciences, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Jane C Khoury
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA; Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
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Abe T, Loenneke JP. Is an Exercise Intervention the only way to Reduce Visceral Fat without Reducing Fat-free Mass in Children and Adolescents? EXERCISE MEDICINE 2021. [DOI: 10.26644/em.2021.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Objectives: To maintain proper development, it is recommended that children/adolescents focus more on increasing physical activity than dietary restriction when treating obesity. In other words, adults are better able to tolerate the reductions in fat-free body mass that often occur when trying to lose fat mass. In contrast, children and adolescents should avoid losses in fat-free mass in order to ensure proper development. Therefore, when trying to reduce visceral fat in children via a negative energy balance (i.e., exercise with or without calorie restriction), it is necessary to set desirable conditions in order to minimize the loss of fat-free mass. To determine whether this is possible, we reviewed literature discussing the relationship between changes in visceral fat obtained by abdominal imaging and changes in total body fat and fat-free mass after exercise training with and without calorie restriction in children and adolescents.Methods: Literature review.Results and Conclusions: Previous work found no reduction in fat-free mass in the exercise interventions in which there was no dietary-induced calorie restriction. This supports the idea that reducing visceral fat by increasing physical activity is the preferred strategy over dietary restriction in children and adolescents. Although factors such as the type (e.g. aerobic and/or resistance) of exercise and the amount (i.e. energy expenditure) of exercise will likely have an effect on the magnitude of change in intra-abdominal visceral fat, the quantity of each that is needed without reducing fat-free mass is currently unknown.
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Macieira L, Saraiva J, da Conceição dos Santos L. Short- and Medium-Term Impact of a Structured Medical Intervention in Adolescents with Overweight, Obesity, or Increased Waist Circumference. Obes Facts 2021; 14:622-632. [PMID: 34610604 PMCID: PMC8739358 DOI: 10.1159/000519270] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 08/24/2021] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION AND OBJECTIVES This study aimed to assess the impact of a structured medical intervention in adolescents with overweight or obesity at medical discharge and after 5 years and identify the factors responsible for the reappearance of anthropometric alterations. METHODS A total of 42 adolescents with overweight, obesity, and/or increased waist circumference (WC) participated in a survey on eating habits, physical exercise, and sedentary habits. Body mass index (BMI), fat mass (FM), and WC were evaluated quarterly during a structured medical intervention, with a maximum duration of 3 years (2007-2010) and 5 years after its conclusion (2015-2016). SPSS 19.0®was used for statistical analysis. RESULTS Initially, 23.8% adolescents were overweight, 28.6% were obese, 83.3% had increased FM, and 95.2% had high WC. A significant improvement was noted until medical discharge with respect to BMI, FM, and WC (p < 0.001) owing to an increased number of meals; reduction in the consumption of hypercaloric foods/drinks (p < 0.001); increase in the consumption of fruits, vegetables, and soup (p < 0.001); increase in physical exercise and daily walks (p < 0.001); and reduction in sedentary habits (p < 0.001). At reassessment, after 5 years, the majority had normal BMI, FM, and WC (p < 0.001), although 45.2% had abandoned sports (p < 0.001). CONCLUSIONS A relation exists between the improvement or normalization of BMI, FM, and WC and the number of meals, healthy eating habits, physical exercise, and less sedentary habits. The intervention was associated with an improvement in the parameters during the short and medium terms.
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Affiliation(s)
- Luisa Macieira
- University of Coimbra, Faculty of Medicine, University Pediatric Clinic, Coimbra, Portugal
- Superior School of Health Technology, Dietetics and Nutrition, Coimbra, Portugal
| | - Jorge Saraiva
- University of Coimbra, Faculty of Medicine, University Pediatric Clinic, Coimbra, Portugal
- Hospital and University Centre of Coimbra, Medical Genetics Unit, Coimbra, Portugal
- Clinical Academic Centre of Coimbra, Coimbra, Portugal
| | - Lélita da Conceição dos Santos
- University of Coimbra, Faculty of Medicine, Coimbra, Portugal
- Hospital and University Centre of Coimbra, Internal Medicine Senior Graduate Hospital Assistant, Coimbra, Portugal
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9
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Hernández-Jaña S, Sanchez-Martinez J, Solis-Urra P, Esteban-Cornejo I, Castro-Piñero J, Sadarangani KP, Aguilar-Farias N, Ferrari G, Cristi-Montero C. Mediation Role of Physical Fitness and Its Components on the Association Between Distribution-Related Fat Indicators and Adolescents' Cognitive Performance: Exploring the Influence of School Vulnerability. The Cogni-Action Project. Front Behav Neurosci 2021; 15:746197. [PMID: 34566598 PMCID: PMC8456005 DOI: 10.3389/fnbeh.2021.746197] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 08/16/2021] [Indexed: 12/24/2022] Open
Abstract
Background: Physical fitness and fatness converge simultaneously modulating cognitive skills, which in turn, are associated with children and adolescents’ socioeconomic background. However, both fitness components and fat mass localization are crucial for understanding its implication at the cognitive level. Objective: This study aimed to determine the mediation role of a global physical fitness score and its components on the association between different fatness indicators related to fat distribution and adolescents’ cognitive performance, and simultaneously explore the influence of school vulnerability. Methods: In this study, 1,196 Chilean adolescents participated (aged 10–14; 50.7% boys). Cardiorespiratory fitness (CRF), muscular fitness (MF), and speed-agility fitness (SAF) were evaluated, and a global fitness score (GFS) was computed adjusted for age and sex (CRF + MF + SAF z-scores). Body mass index z-score (BMIz), sum-of-4-skinfolds (4SKF), and waist-to-height ratio (WHtR) were used as non-specific, peripheral, and central adiposity indicators, respectively. A global cognitive score was computed based on eight tasks, and the school vulnerability index (SVI) was registered as high, mid or low. A total of 24 mediation analyses were performed according to two models, adjusted for sex and peak high velocity (Model 1), and adding the school vulnerability index (SVI) in Model 2. The significance level was set at p < 0.05. Results: The fitness mediation role was different concerning the fatness indicators related to fat distribution analyzed. Even after controlling for SVI, CRF (22%), and SAF (29%), but not MF, mediated the association between BMIz and cognitive performance. Likewise, CRF, SAF and GFS, but not MF, mediated the association between WHtR and cognitive performance (38.6%, 31.9%, and 54.8%, respectively). No mediations were observed for 4SKF. Conclusion: The negative association between fatness and cognitive performance is mitigated by the level of adolescents’ physical fitness, mainly CRF and SAF. This mediation role seems to be more consistent with a central fat indicator even in the presence of school vulnerability. Strategies promoting physical fitness would reduce the cognitive gap in children and adolescents related to obesity and school vulnerability.
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Affiliation(s)
- Sam Hernández-Jaña
- Physical Education School, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Javier Sanchez-Martinez
- Physical Education School, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile.,Escuela de Kinesiología, Facultad de Salud, Universidad Santo Tomás, Viña del Mar, Chile
| | - Patricio Solis-Urra
- PROFITH "PROmoting FITness and Health Through Physical Activity" Research Group, Sport and Health University Research Institute (iMUDS), Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain.,Faculty of Education and Social Sciences, Universidad Andres Bello, Viña del Mar, Chile
| | - Irene Esteban-Cornejo
- PROFITH "PROmoting FITness and Health Through Physical Activity" Research Group, Sport and Health University Research Institute (iMUDS), Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain
| | - Jose Castro-Piñero
- GALENO Research Group, Department of Physical Education, Faculty of Education Sciences, University of Cádiz, Puerto Real, Spain.,Biomedical Research and Innovation Institute of Cádiz (INiBICA) Research Unit, Cádiz, Spain
| | - Kabir P Sadarangani
- Universidad Autónoma de Chile, Providencia, Chile.,Escuela de Kinesiología, Facultad de Salud y Odontología, Universidad Diego Portales, Santiago, Chile
| | - Nicolas Aguilar-Farias
- Department of Physical Education, Sports and Recreation, Universidad de La Frontera, Temuco, Chile
| | - Gerson Ferrari
- Escuela de Ciencias de la Actividad Física, el Deporte y la Salud, Universidad de Santiago de Chile (USACH), Santiago, Chile
| | - Carlos Cristi-Montero
- Physical Education School, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
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10
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Lee S, Libman I, Hughan KS, Kuk JL, Barinas-Mitchell E, Chung H, Arslanian S. Effects of exercise modality on body composition and cardiovascular disease risk factors in adolescents with obesity: a randomized clinical trial. Appl Physiol Nutr Metab 2021; 45:1377-1386. [PMID: 32674587 DOI: 10.1139/apnm-2019-0993] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We compared the effects of aerobic exercise, resistance exercise, and combined aerobic and resistance exercise on total, regional subcutaneous adipose tissue (SAT) and visceral AT (VAT), skeletal muscle (SM), and biomarkers of cardiovascular disease in adolescents. Adolescents with overweight/obesity (N = 118; body mass index ≥ 85th percentile; age, 12-17 years) were randomized to 1 of the following groups for 6 months (3 days/week, 180 min/week): aerobic exercise (n = 38), resistance exercise (n = 40), or combined aerobic and resistance exercise (n = 40). After accounting for age, sex, and baseline value, there was a greater (P < 0.05) reduction in body weight in the aerobic exercise group compared with the resistance exercise group and the combined groups. There were reductions (P < 0.05) in total and regional SAT within the aerobic exercise group only, and the reductions in lower-body SAT were greater (P = 0.02) than the combined group. All groups had reductions (P < 0.01) in VAT, with no group differences. There were significant increases in total and regional SM mass in the resistance exercise and combined group, and not in the aerobic exercise group. Although all exercise modalities are effective in reducing VAT, aerobic exercise is superior at reducing total and regional SAT, but inferior for increasing SM in adolescents with obesity. Despite reductions in VAT, carotid-femoral pulse wave velocity and carotid intima-media thickness did not improve with either exercise. Clinicaltrials.gov identifier: NCT01938950. Novelty Regular exercise (180 min/week) is associated with reductions in visceral fat independent of exercise modality. Resistance exercise alone and combined resistance and aerobic exercise are similarly effective in increasing SM mass.
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Affiliation(s)
- SoJung Lee
- Division of Sports Medicine, Graduate School of Physical Education, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Ingrid Libman
- Division of Pediatric Endocrinology, Metabolism and Diabetes Mellitus, UPMC Children's Hospital of Pittsburgh, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15224, USA
| | - Kara S Hughan
- Division of Pediatric Endocrinology, Metabolism and Diabetes Mellitus, UPMC Children's Hospital of Pittsburgh, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15224, USA
| | - Jennifer L Kuk
- School of Kinesiology and Health Science, York University, Toronto, ON M3J 1P3, Canada
| | - Emma Barinas-Mitchell
- Department of Epidemiology Ultrasound Research Laboratory, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA 15224, USA
| | - Hyeok Chung
- Department of Physical Education, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Silva Arslanian
- Division of Pediatric Endocrinology, Metabolism and Diabetes Mellitus, UPMC Children's Hospital of Pittsburgh, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15224, USA.,Center for Pediatric Research in Obesity and Metabolism, UPMC Children's Hospital of Pittsburgh, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15224, USA
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11
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Effect of exercise intervention dosage on reducing visceral adipose tissue: a systematic review and network meta-analysis of randomized controlled trials. Int J Obes (Lond) 2021; 45:982-997. [PMID: 33558643 DOI: 10.1038/s41366-021-00767-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 12/03/2020] [Accepted: 01/20/2021] [Indexed: 01/30/2023]
Abstract
BACKGROUND Visceral adipose tissue (VAT) are deleterious fat deposits in the human body and can be effectively reduced by exercise intervention. Despite well-established exercise prescriptions are available, the effective dosage of exercise for reducing VAT requires verification. OBJECTIVES The aims of this systematic review and meta-analysis were to determine the most effective exercise dosage (modality, intensity, duration, and amount) for decreasing VAT. METHODS Nine databases (EMBASE, Medline, Cochrane Central Register of Controlled Trial, PubMed, CINAHL, Scopus, Web of Science, Airiti Library, and PerioPath) were systematically searched for randomized controlled trials that objectively assessed VAT. The arms of included studies covered with different exercise modalities and dosage. Relevant databases were searched through February 2020. RESULTS Of the 34 studies (n = 1962) included in systematic review, 32 (n = 1900) were pooled for pairwise or network meta-analysis. The results indicated that high-intensity interval training (SMD -0.39, 95% CI -0.60 to -0.18) and aerobic exercise (SMD -0.26, 95% CI -0.38 to -0.13) of at least moderate intensity were beneficial for reducing VAT. By contrast, resistance exercise, aerobic exercise combined with resistance exercise, and sprint interval training had no significant effects. No difference in VAT reduction was observed between exercising more or less than 150 min per week. Meta-regression revealed that the effect of VAT reduction was not significantly influenced by an increase in the duration of or amount of exercise in an exercise program. The effective dosage of exercise for reducing VAT was three times per week for 12 to 16 weeks, while duration per session for aerobic exercise was 30-60 min, and either less than 30 min or 30-60 min of high-intensity interval training accomplished sufficient energy expenditure to impact VAT. CONCLUSIONS These results can inform exercise prescriptions given to the general population for improving health by reducing VAT.
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12
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Salam RA, Padhani ZA, Das JK, Shaikh AY, Hoodbhoy Z, Jeelani SM, Lassi ZS, Bhutta ZA. Effects of Lifestyle Modification Interventions to Prevent and Manage Child and Adolescent Obesity: A Systematic Review and Meta-Analysis. Nutrients 2020; 12:E2208. [PMID: 32722112 PMCID: PMC7468898 DOI: 10.3390/nu12082208] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 06/30/2020] [Accepted: 07/21/2020] [Indexed: 02/07/2023] Open
Abstract
The objective of this review was to assess the impact of lifestyle interventions (including dietary interventions, physical activity, behavioral therapy, or any combination of these interventions) to prevent and manage childhood and adolescent obesity. We conducted a comprehensive literature search across various databases and grey literature without any restrictions on publication, language, or publication status until February 2020. We included randomized controlled trials and quasi-experimental studies from both high income countries (HIC) and low-middle-income countries (LMICs). Participants were children and adolescents from 0 to 19 years of age. Studies conducted among hospitalized children and children with any pre-existing health conditions were excluded from this review. A total of 654 studies (1160 papers) that met the inclusion criteria were included in this review. A total of 359 studies targeted obesity prevention, 280 studies targeted obesity management, while 15 studies targeted both prevention and management. The majority of the studies (81%) were conducted in HICs, 10% of studies were conducted in upper middle income countries, while only 2% of the studies were conducted in LMICs. The most common setting for these interventions were communities and school settings. Evidence for the prevention of obesity among children and adolescents suggests that a combination of diet and exercise might reduce the BMI z-score (MD: -0.12; 95% CI: -0.18 to -0.06; 32 studies; 33,039 participants; I2 93%; low quality evidence), body mass index (BMI) by 0.41 kg/m2 (MD: -0.41 kg/m2; 95% CI: -0.60 to -0.21; 35 studies; 47,499 participants; I2 98%; low quality evidence), and body weight (MD: -1.59; 95% CI: -2.95 to -0.23; 17 studies; 35,023 participants; I2 100%; low quality evidence). Behavioral therapy alone (MD: -0.07; 95% CI: -0.14 to -0.00; 19 studies; 8569 participants; I2 76%; low quality evidence) and a combination of exercise and behavioral therapy (MD: -0.08; 95% CI: -0.16 to -0.00; 9 studies; 7334 participants; I2 74%; low quality evidence) and diet in combination with exercise and behavioral therapy (MD: -0.13; 95% CI: -0.25 to -0.01; 5 studies; 1806 participants; I2 62%; low quality evidence) might reduce BMI z-score when compared to the control group. Evidence for obesity management suggests that exercise only interventions probably reduce BMI z-score (MD: -0.13; 95% CI: -0.20 to -0.06; 12 studies; 1084 participants; I2 0%; moderate quality evidence), and might reduce BMI (MD: -0.88; 95% CI: -1.265 to -0.50; 34 studies; 3846 participants; I2 72%) and body weight (MD: -3.01; 95% CI: -5.56 to -0.47; 16 studies; 1701 participants; I2 78%; low quality evidence) when compared to the control group. and the exercise along with behavioral therapy interventions (MD: -0.08; 95% CI: -0.16 to -0.00; 8 studies; 466 participants; I2 49%; moderate quality evidence), diet along with behavioral therapy interventions (MD: -0.16; 95% CI: -0.26 to -0.07; 4 studies; 329 participants; I2 0%; moderate quality evidence), and combination of diet, exercise and behavioral therapy (MD: -0.09; 95% CI: -0.14 to -0.05; 13 studies; 2995 participants; I2 12%; moderate quality evidence) also probably decreases BMI z-score when compared to the control group. The existing evidence is most favorable for a combination of interventions, such as diet along with exercise and exercise along with behavioral therapy for obesity prevention and exercise alone, diet along with exercise, diet along with behavioral therapy, and a combination of diet, exercise, and behavioral therapy for obesity management. Despite the growing obesity epidemic in LMICs, there is a significant dearth of obesity prevention and management studies from these regions.
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Affiliation(s)
- Rehana A. Salam
- Division of Women and Child Health, Aga Khan University Hospital, Karachi 74800, Pakistan; (R.A.S.); (Z.A.P.); (J.K.D.); (A.Y.S.); (Z.H.)
| | - Zahra A. Padhani
- Division of Women and Child Health, Aga Khan University Hospital, Karachi 74800, Pakistan; (R.A.S.); (Z.A.P.); (J.K.D.); (A.Y.S.); (Z.H.)
| | - Jai K. Das
- Division of Women and Child Health, Aga Khan University Hospital, Karachi 74800, Pakistan; (R.A.S.); (Z.A.P.); (J.K.D.); (A.Y.S.); (Z.H.)
| | - Amina Y. Shaikh
- Division of Women and Child Health, Aga Khan University Hospital, Karachi 74800, Pakistan; (R.A.S.); (Z.A.P.); (J.K.D.); (A.Y.S.); (Z.H.)
| | - Zahra Hoodbhoy
- Division of Women and Child Health, Aga Khan University Hospital, Karachi 74800, Pakistan; (R.A.S.); (Z.A.P.); (J.K.D.); (A.Y.S.); (Z.H.)
| | - Sarah Masroor Jeelani
- Department of Trauma & Orthopaedics, Macclesfield District General Hospital, East Cheshire NHS Trust Victoria Rd, Macclesfield SK10 3BL, UK;
| | - Zohra S. Lassi
- Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia;
| | - Zulfiqar A. Bhutta
- Centre for Global Child Health, the Hospital for Sick Children, Toronto, ON M5G 1X8, Canada
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13
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Kim KB, Kim K, Kim C, Kang SJ, Kim HJ, Yoon S, Shin YA. Effects of Exercise on the Body Composition and Lipid Profile of Individuals with Obesity: A Systematic Review and Meta-Analysis. J Obes Metab Syndr 2019; 28:278-294. [PMID: 31909371 PMCID: PMC6939705 DOI: 10.7570/jomes.2019.28.4.278] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 07/10/2019] [Accepted: 10/30/2019] [Indexed: 12/28/2022] Open
Abstract
Background Numerous researchers have worked to develop treatments for obesity; however, the prevalence of obesity continues to increase in many countries. Moreover, the effects of physical activity and exercise on obesity remain unclear. Therefore, it is necessary to perform a systematic review and meta-analysis to assess the relationship between exercise and obesity using mediator variables such as the mode of exercise. Methods Our review focuses on research tracking the effects of exercise on obesity conducted from 2007 to 2016 and available in any of three databases: Embase, PubMed, and EBSCO Academic Search Premier. The keywords used in the search were “exercise and obesity” and “exercise and obese.” Results The average size of the effects that exercise interventions have on body mass index (standardized mean difference [SMD], 0.533), waist circumference (SMD, 0.666), total cholesterol (SMD, 0.721), and triglyceride (TG; SMD, 0.603) were medium or larger. Exercise had greater effects on the outward appearance of obesity (body mass index, waist circumference) than on its practical factors (weight, % body fat). The effect of exercise on TG (SMD, 0.603) was larger than that on low-density lipoprotein (SMD, 0.406) and high-density lipoprotein (SMD, −0.222). Exercise duration (weeks of exercise) and intensity correlate better than exercise time (minutes per week) with a large and consistent improvement in adult obesity. Conclusion We suggest that individuals with obesity should exercise consistently to achieve significant improvements in their health.
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Affiliation(s)
- Kyoung-Bae Kim
- Department of Physical Education, Korea Military Academy, Seoul, Korea
| | - Kijin Kim
- Department of Physical Education, College of Physical Education, Keimyung University, Daegu, Korea
| | - Changsun Kim
- Department of Physical Education, Dongduk Women's University, Seoul, Korea
| | - Suh-Jung Kang
- Department of Sports and Health Management, Sangmyung University, Seoul, Korea
| | - Hyo Jeong Kim
- Department of Sport and Healthy Aging, Korea National Sport University, Seoul, Korea
| | - Seok Yoon
- Department of Sport Science, Chowan University, Murfreesboro, NC, USA
| | - Yun-A Shin
- Department of Prescription and Rehabilitation of Exercise, College of Sport Science, Dankook University, Cheonan, Korea
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14
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Kim C, Harrall KK, Glueck DH, Shumer D, Dabelea D. Childhood adiposity and adolescent sex steroids in the Exploring Perinatal Outcomes among Children study. Clin Endocrinol (Oxf) 2019; 91:525-533. [PMID: 31278867 PMCID: PMC6744341 DOI: 10.1111/cen.14058] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 06/30/2019] [Accepted: 07/04/2019] [Indexed: 12/21/2022]
Abstract
OBJECTIVE It is unclear how childhood adipose tissue deposition influences sex hormone profiles in later adolescence. DESIGN Prospective cohort study. PARTICIPANTS Children (n = 418) with a mean age of 10.5 (1.5) years at visit 1 and 16.7 (1.2) at visit 2 in the Exploring Perinatal Outcomes among Children (EPOCH) Study. MEASUREMENTS We used reverse-scale Cox proportional hazard models to assess associations between pubertal dehydroepiandrosterone (DHEA), testosterone (T), and oestradiol (E2) and childhood-to-puberty rate of change in visceral (VAT) and subcutaneous adipose tissue (SAT). Models stratified by sex and adjusted for childhood adiposity, maternal factors, birthweight and pubertal onset, and then further adjusted for insulin, luteinizing hormone (LH), leptin and hepatic fat fraction. RESULTS Among boys, more rapid accumulation of either VAT or SAT was associated with lower testosterone at visit 2 (HR 0.86, and .96, respectively, both P < .0001), independently of race/ethnicity, LH, leptin and hepatic fat fraction. Among boys, more childhood VAT was associated with lower testosterone in adolescence (HR 0.98, P = .003), but this association did not persist after adjustment for leptin or insulin. No associations were observed between either fat measure and oestradiol or DHEA in boys. In girls, no associations between childhood fat or fat accumulation and sex hormones were observed. CONCLUSIONS More rapid accumulation of fat is associated with lower testosterone in boys. These associations suggest that fat growth influences androgen profiles in adolescent boys. Since fat accumulation is a modifiable risk factor, the study results provide a possible intervention target and time period for improving adult health.
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Affiliation(s)
- Catherine Kim
- Departments of Medicine, Obstetrics & Gynecology, and Epidemiology, University of Michigan, Ann Arbor, Michigan
| | - Kylie K Harrall
- Lifecourse Epidemiology of Adiposity and Diabetes (LEAD) Center, University of Colorado Denver, Aurora, Colorado
| | - Deborah H Glueck
- Lifecourse Epidemiology of Adiposity and Diabetes (LEAD) Center, University of Colorado Denver, Aurora, Colorado
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado
| | - Daniel Shumer
- Department of Epidemiology, University of Colorado, Aurora, Colorado
| | - Dana Dabelea
- Lifecourse Epidemiology of Adiposity and Diabetes (LEAD) Center, University of Colorado Denver, Aurora, Colorado
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado
- Department of Pediatrics, University of Michigan, Ann Arbor, Michigan
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15
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Deldin A, Kuk JL, Lee S. Influence of Sex on the Changes in Regional Fat and Skeletal Muscle Mass in Response to Exercise Training in Adolescents with Obesity. Child Obes 2019; 15:216-222. [PMID: 30694699 PMCID: PMC6442263 DOI: 10.1089/chi.2018.0329] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND We retrospectively examined the sex differences in the changes in (1) total fat, total and regional subcutaneous adipose tissue (SAT), visceral fat, and intermuscular fat and (2) total and regional skeletal muscle distribution in response to aerobic exercise (AE) or resistance exercise (RE) in adolescents with obesity. METHODS Twenty-eight boys and 27 girls with obesity (BMI ≥95th percentile, 12-18 years) were randomly assigned to 3-month interventions (180 minutes per week) of AE or RE. Changes in total and regional fat and skeletal muscle distribution were assessed by a whole-body magnetic resonance imaging. RESULTS After controlling for corresponding baseline values, age, and race, changes in body weight, BMI, BMI z-score, and waist circumference were similar between exercise groups (p > 0.05) and sexes (p > 0.05). There were no sex or exercise group differences in the reductions in total fat, total SAT, visceral fat, or intermuscular fat. With AE, boys had greater (p < 0.05) reductions in abdominal SAT as compared with girls. With RE, boys had greater (p < 0.05) increases in total, upper body, and abdominal skeletal muscle as compared with girls. Independent of exercise modality, the improvement in VO2max was greater (p < 0.05) in boys than in girls. Independent of sex, the increase in muscular strength index was higher (p < 0.05) in the RE vs. AE group. CONCLUSION With the exception of abdominal SAT, there were no sex or exercise treatment differences in the reductions in total and regional fat. In response to RE, the increases in total and regional skeletal muscle were significantly greater in boys than in girls.
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Affiliation(s)
- Anthony Deldin
- Marcella Niehoff School of Nursing, Loyola University Chicago, Chicago, IL
| | - Jennifer L. Kuk
- School of Kinesiology and Health Science, York University, Toronto, Canada
| | - SoJung Lee
- Division of Sports Medicine, Graduate School of Physical Education, Kyung Hee University, Yongin, Korea.,Address correspondence to: SoJung Lee, PhD, Division of Sports Medicine, Graduate School of Physical Education, Kyung Hee University, Yongin 17104, Korea
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16
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Rao S, Pandey A, Garg S, Park B, Mayo H, Després JP, Kumbhani D, de Lemos JA, Neeland IJ. Effect of Exercise and Pharmacological Interventions on Visceral Adiposity: A Systematic Review and Meta-analysis of Long-term Randomized Controlled Trials. Mayo Clin Proc 2019; 94:211-224. [PMID: 30711119 PMCID: PMC6410710 DOI: 10.1016/j.mayocp.2018.09.019] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 09/07/2018] [Accepted: 09/27/2018] [Indexed: 12/18/2022]
Abstract
OBJECTIVE To assess the effectiveness of exercise and pharmacotherapy interventions in reducing visceral adipose tissue (VAT). PATIENTS AND METHODS A systematic search of Ovid MEDLINE, Scopus, Web of Science, Cochrane Library, ClinicalTrials.gov, New York Academy of Science Grey Literature Report, and OpenGrey was combined with hand searches of existing literature. A total of 2515 titles and abstracts were reviewed. Only randomized controlled trials evaluating the effectiveness of monitored exercise or pharmacological interventions in reducing VAT by using computed tomography or magnetic resonance imaging during a sustained intervention period (≥6 months) were included. Data were independently extracted by reviewers according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines and assessed for quality and risk of bias. Separate analyses for each intervention were performed using random effect models, with pooled estimates of the change in VAT area (in centimeters squared) from baseline to follow-up reported as standardized mean difference (SMD; with 95% CI). RESULTS A total of 3602 participants from 17 randomized controlled trials were included in the final analysis. Both exercise and pharmacological interventions were associated with significant reductions in VAT: small reduction with pharmacological interventions (SMD, -0.27; 95% CI, -0.47 to -0.07; P=.02) and more substantial reductions with exercise interventions (SMD, -0.54; 95% CI, -0.63 to -0.46; P<.001). The mean absolute VAT reduction was greater in pharmacological trials than in exercise trials. Meta-regression exhibited a linear correlation between VAT and weight loss (R2=0.52 for exercise and R2=0.88 for pharmacological interventions), but VAT reduction relative to weight loss differed by intervention type. CONCLUSION Exercise interventions resulted in greater reduction in VAT relative to weight loss than did pharmacological interventions. A preferential reduction in VAT may be clinically meaningful when monitoring success of interventions because weight loss alone may underestimate benefits.
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Affiliation(s)
- Shreya Rao
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas
| | - Ambarish Pandey
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas; Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas
| | - Sushil Garg
- Department of Internal Medicine, University of Minnesota Medical Center, Minneapolis
| | - Bryan Park
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas
| | - Helen Mayo
- Health Sciences Digital Library and Learning Center, University of Texas Southwestern Medical Center, Dallas
| | | | - Dharam Kumbhani
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas; Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas
| | - James A de Lemos
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas; Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas
| | - Ian J Neeland
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas; Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas.
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17
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Dias KA, Ramos JS, Wallen MP, Davies PSW, Cain PA, Leong GM, Ingul CB, Coombes JS, Keating SE. Accuracy of Longitudinal Assessment of Visceral Adipose Tissue by Dual-Energy X-Ray Absorptiometry in Children with Obesity. J Obes 2019; 2019:2193723. [PMID: 31781386 PMCID: PMC6875275 DOI: 10.1155/2019/2193723] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 06/25/2019] [Accepted: 08/19/2019] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Increased visceral adipose tissue (VAT) is strongly associated with cardiometabolic risk factors. Accurate quantification of VAT is available through magnetic resonance imaging (MRI), which incurs a significant financial and time burden. We aimed to assess the accuracy of dual-energy X-ray absorptiometry- (DXA-) derived VAT (DXA-VAT) against a gold standard MRI protocol (MRI-VAT) in children with normal weight and obesity cross-sectionally, and over the course of a lifestyle intervention. METHODOLOGY MRI-VAT and DXA-VAT were quantified in 61 children (30 normal weight and 31 with obesity) at baseline. Children with obesity entered a three-month exercise and/or nutrition intervention after which VAT was reassessed. MRI- and DXA-VAT cross-sectional area, volume, and mass were quantified, and associations were calculated at baseline (n = 61) and pre-post intervention (n = 28, 3 participants dropped out). Method agreement was assessed through Bland-Altman analysis, linear regression, and Passing-Bablok regression. RESULTS At baseline, all DXA- and MRI-VAT outcomes were strongly associated (r = 0.90, P < 0.001). However, there were no significant associations between absolute or relative change in DXA- and MRI-VAT outcomes (r = 0.25-0.36, P > 0.05). DXA significantly overestimated VAT CSA (cross-sectional area), volume, and mass when compared with MRI (P < 0.001) at baseline. Significant proportional bias was observed for all DXA-VAT outcomes at baseline and for relative longitudinal changes in DXA-VAT. CONCLUSIONS Although DXA-VAT outcomes were strongly associated with MRI-VAT outcomes at baseline, estimates were subject to proportional bias in children with obesity and normal weight. DXA lacks validity for detecting changes in VAT among children with obesity. This trial is registered with NCT01991106.
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Affiliation(s)
- Katrin A. Dias
- School of Human Movement and Nutrition Sciences, The University of Queensland, St Lucia, Brisbane, QLD, Australia
| | - Joyce S. Ramos
- School of Human Movement and Nutrition Sciences, The University of Queensland, St Lucia, Brisbane, QLD, Australia
| | - Matthew P. Wallen
- School of Human Movement and Nutrition Sciences, The University of Queensland, St Lucia, Brisbane, QLD, Australia
| | - Peter S. W. Davies
- Child Health Research Centre, The University of Queensland, Brisbane, QLD, Australia
| | - Peter A. Cain
- Heart Care Partners, The Wesley Hospital, Brisbane, QLD, Australia
| | - Gary M. Leong
- Nepean Hospital and Nepean Charles Perkins Center Research Hub, University of Sydney, Kingswood, NSW, Australia
| | - Charlotte B. Ingul
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
- Helse Midt-Norge RHF, Strandvegen 1, Stjordal, Norway
| | - Jeff S. Coombes
- School of Human Movement and Nutrition Sciences, The University of Queensland, St Lucia, Brisbane, QLD, Australia
| | - Shelley E. Keating
- School of Human Movement and Nutrition Sciences, The University of Queensland, St Lucia, Brisbane, QLD, Australia
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18
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Dias KA, Ingul CB, Tjønna AE, Keating SE, Gomersall SR, Follestad T, Hosseini MS, Hollekim-Strand SM, Ro TB, Haram M, Huuse EM, Davies PSW, Cain PA, Leong GM, Coombes JS. Effect of High-Intensity Interval Training on Fitness, Fat Mass and Cardiometabolic Biomarkers in Children with Obesity: A Randomised Controlled Trial. Sports Med 2018; 48:733-746. [PMID: 28853029 DOI: 10.1007/s40279-017-0777-0] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND Paediatric obesity significantly increases the risk of developing cardiometabolic diseases across the lifespan. Increasing cardiorespiratory fitness (CRF) could mitigate this risk. High-intensity interval training (HIIT) improves CRF in clinical adult populations but the evidence in paediatric obesity is inconsistent. OBJECTIVES The objectives of this study were to determine the efficacy of a 12-week, HIIT intervention for increasing CRF and reducing adiposity in children with obesity. METHODS Children with obesity (n = 99, 7-16 years old) were randomised into a 12-week intervention as follows: (1) HIIT [n = 33, 4 × 4-min bouts at 85-95% maximum heart rate (HRmax), interspersed with 3 min of active recovery at 50-70% HRmax, 3 times/week] and nutrition advice; (2) moderate-intensity continuous training (MICT) [n = 32, 44 min at 60-70% HRmax, 3 times/week] and nutrition advice; and (3) nutrition advice only (nutrition) [n = 34]. CRF was quantified through a maximal exercise test ([Formula: see text]) while adiposity was assessed using magnetic resonance imaging (MRI), dual-energy X-ray absorptiometry (DXA) and air-displacement plethysmography. RESULTS HIIT stimulated significant increases in relative [Formula: see text] compared with MICT (+3.6 mL/kg/min, 95% CI 1.1-6.0, P = 0.004) and the nutrition intervention (+5.4 mL/kg/min, 95% CI 2.9-7.9, P = 0.001). However, the intervention had no significant effect on visceral and subcutaneous adipose tissue, whole body composition or cardiometabolic biomarkers (P > 0.05). CONCLUSION A 12-week, HIIT intervention was highly effective in increasing cardiorespiratory fitness when compared with MICT and nutrition interventions. While there were no concomitant reductions in adiposity or blood biomarkers, the cardiometabolic health benefit conferred through increased CRF should be noted. CLINICAL TRIALS REGISTRATION NUMBER Clinicaltrials.gov; NCT01991106.
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Affiliation(s)
- Katrin A Dias
- School of Human Movement and Nutrition Sciences, The University of Queensland, St Lucia, Brisbane, QLD, 4072, Australia
| | - Charlotte B Ingul
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway.,Helse Midt-Norge RHF, Strandvegen 1, Stjørdal, Norway
| | - Arnt E Tjønna
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
| | - Shelley E Keating
- School of Human Movement and Nutrition Sciences, The University of Queensland, St Lucia, Brisbane, QLD, 4072, Australia
| | - Sjaan R Gomersall
- School of Health and Rehabilitation Sciences, The University of Queensland, St Lucia, Brisbane, QLD, Australia
| | - Turid Follestad
- Department of Public Health and General Practice, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Mansoureh S Hosseini
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
| | - Siri M Hollekim-Strand
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
| | - Torstein B Ro
- Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway.,Department of Pediatrics, St. Olav's University Hospital, Trondheim, Norway
| | - Margrete Haram
- Department of Radiology and Nuclear Medicine, Trondheim University Hospital, Trondheim, Norway
| | - Else Marie Huuse
- Department of Radiology and Nuclear Medicine, Trondheim University Hospital, Trondheim, Norway
| | - Peter S W Davies
- Children's Nutrition Research Centre, The University of Queensland, Brisbane, QLD, Australia
| | - Peter A Cain
- Heart Care Partners, The Wesley Hospital, Brisbane, QLD, Australia
| | - Gary M Leong
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia.,Department of Paediatric Endocrinology, Lady Cilento Children's Hospital, Brisbane, QLD, Australia
| | - Jeff S Coombes
- School of Human Movement and Nutrition Sciences, The University of Queensland, St Lucia, Brisbane, QLD, 4072, Australia.
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19
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Jung HC, Jeon S, Lee NH, Kim K, Kang M, Lee S. Effects of exercise intervention on visceral fat in obese children and adolescents. J Sports Med Phys Fitness 2018; 59:1045-1057. [PMID: 30035473 DOI: 10.23736/s0022-4707.18.08935-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
INTRODUCTION This meta-analysis study was aimed to assess the effects of exercise intervention on visceral fat in obese children and adolescents. EVIDENCE ACQUISITION Electronic database searches were performed in Academic Search Complete, CINAHL, Healthsource, MEDLINE, and SportDiscus, and from the earliest record to November 2017. Keywords included "exercise or training," "visceral fat," and "child or adolescent or youth." The inclusion criteria for eligible studies were as follows: 1) subjects were obese at baseline; 2) aged 6-19 years; 3) visceral fat was reported at baseline and after an intervention; and 4) studies were published in peer-reviewed journals written in English. EVIDENCE SYNTHESIS A total of 207 studies were observed at the initial search and 73 effect sizes (ESs) were derived from the 34 selected studies. The overall exercise intervention effect was large (Cohen's d [ES]=-1.003, 95% CI=-1.114, -0.892). Moderator analyses results showed that gender (Qb=8.23, df=2, P=0.016), exercise type (Qb=10.68, df=2, P=0.005), and intervention length (Qb=24.71, df=2, P<0.001) influenced the overall ES. CONCLUSIONS The group of both boys and girls (ES=-0.95) who participated combined exercise program (Aerobic + Resistance training; ES=-1.17) for 12 months (ES=-1.24) appeared to be the most effective exercise strategy for reducing visceral fat in obese youth.
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Affiliation(s)
- Hyun C Jung
- Department of Kinesiology, College of Health Sciences, University of Louisiana Monroe, Monroe, LA, USA
| | - Soeun Jeon
- Department of Counseling, Health, and Kinesiology, College of Education and Human Development, Texas A&M University-San Antonio, San Antonio, TX, USA
| | - Nan H Lee
- School of Biological Sciences, College of Sciences, Georgia Institute of Technology, Atlanta, GA, USA
| | - Kyungun Kim
- Department of Nutrition and Kinesiology, College of Health, Science & Technology, University of Central Missouri, Warrensburg, MO, USA
| | - Minsoo Kang
- Health, Exercise Science, and Recreation Management, The University of Mississippi, Oxford, MS, USA
| | - Sukho Lee
- School of Biological Sciences, College of Sciences, Georgia Institute of Technology, Atlanta, GA, USA -
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20
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Kahl KG, Deuschle M, Stubbs B, Schweiger U. Visceral adipose tissue in patients with severe mental illness. Horm Mol Biol Clin Investig 2018; 33:hmbci-2018-0007. [PMID: 29547392 DOI: 10.1515/hmbci-2018-0007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 02/15/2018] [Indexed: 12/25/2022]
Abstract
Background Severe mental illnesses (SMIs), i.e. major depression, schizophrenia and bipolar disorder, are associated with an elevated risk for the development of type-2 diabetes mellitus and cardiovascular disorders. Several factors have been associated with increased cardiometabolic morbidity and mortality in SMI, including lifestyle factors (smoking, inactivity, unhealthy diet), endocrine and immunologic alterations; however, the underlying mechanisms remain to be fully uncovered. It is now well accepted that visceral adipose tissue (VAT) promotes the development of cardiometabolic disorders, at least in part by inflammatory and metabolic functions. Methods This paper reviews studies concerning VAT, with special focus on intra-abdominal and pericardial adipose tissue, in SMI. Results In patients with SMI, several studies have been performed concerning VAT. Most of these studies reported alterations of VAT particularly in patients with major depression and schizophrenia, independent of body weight and body mass index. Some of the studies also reported an increased cardiometabolic risk. Conclusion Patients with SMI are at increased risk of developing cardiometabolic disorders, and display increased amounts of VAT. As studies so far were mainly performed on patients before the onset of cardiometabolic disorders, VAT may serve as a biomarker for patients with SMI to assess cardiometabolic risks beyond established risk scores. Further, interventions aiming at reducing VAT in SMI are highly recommended in long-term multimodal treatment plans.
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Affiliation(s)
- Kai G Kahl
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany, Phone: +49 511-5322495, Fax: +49 511-5328573
| | - Michael Deuschle
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Brendon Stubbs
- Physiotherapy Department, South London and Maudsley NHS Foundation Trust, Denmark Hill, London SE5 8AZ, UK.,Health Service and Population Research Department, Institute of Psychiatry, King's College London, London, UK
| | - Ulrich Schweiger
- Department of Psychiatry and Psychotherapy, University of Lübeck Medical School, Lübeck, Germany
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21
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Hens W, Vissers D, Hansen D, Peeters S, Gielen J, Van Gaal L, Taeymans J. The effect of diet or exercise on ectopic adiposity in children and adolescents with obesity: a systematic review and meta-analysis. Obes Rev 2017; 18:1310-1322. [PMID: 28913977 DOI: 10.1111/obr.12577] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 04/26/2017] [Accepted: 05/14/2017] [Indexed: 12/13/2022]
Abstract
OBJECTIVE Ectopic fat depostion in youth with obesity is associated with an increased cardiovascular disease risk. The aim of this meta-analysis was to summarize the evidence for the use of diet and/or exercise on ectopic adiposity in this population. METHODS A systematic literature search was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-analysis statement. Clinical trials that assessed ectopic fat deposition and included study arms with diet and/or exercise were searched in PubMed, PEDro and the Cochrane database. RESULTS Hepatic fat content and intramyocellular lipid content were described in nine studies and three studies, respectively. Most studies included teenagers, and study duration ranged between 3 and 12 months without follow-up. Using random-effects weights, the standardized mean difference of the change in hepatic adiposity (totalling 320 subjects) was -0.54 Hedges' g (95% confidence interval: -0.69 to -0.38 with p < 0.0001). By re-expressing this effect size, it is seen that diet and/or exercise results in an absolute reduction of intrahepatic lipid with 2%, which accords with a relative reduction up to 70%. Although there were significant ameliorations of insulin sensitivity, no significant changes in intramyocellular lipid were observed. CONCLUSIONS This meta-analysis showed that diet and/or exercise is effective to reduce hepatic adiposity in youth with obesity.
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Affiliation(s)
- W Hens
- Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
| | - D Vissers
- Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
| | - D Hansen
- Faculty of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium.,REVAL-Rehabilitation Research Centre, Diepenbeek, Belgium.,Heart Centre Hasselt, Jessa Hospital, Hasselt, Belgium
| | - S Peeters
- Flemish Working Group from AXXON, Antwerp, Belgium
| | - J Gielen
- Department of Radiology, Antwerp University Hospital, Antwerp, Belgium
| | - L Van Gaal
- Department of Endocrinology, Diabetology and Metabolism, Antwerp University Hospital, Antwerp, Belgium
| | - J Taeymans
- Health, Bern University of Applied Sciences-Health, Bern, Switzerland.,Faculty of Sport and Rehabilitation Sciences, Vrije Universiteit Brussel, Brussels, Belgium
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22
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González-Ruiz K, Ramírez-Vélez R, Correa-Bautista JE, Peterson MD, García-Hermoso A. The Effects of Exercise on Abdominal Fat and Liver Enzymes in Pediatric Obesity: A Systematic Review and Meta-Analysis. Child Obes 2017; 13:272-282. [PMID: 28322576 DOI: 10.1089/chi.2017.0027] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Despite the prevalence of obesity and the multiple position stands promoting exercise for the treatment of obesity and hepatic function, a meta-analytic approach has not previously been used to examine the effects in the pediatric population. The aim of the study was to determine the effectiveness of exercise interventions on abdominal fat, liver enzymes, and intrahepatic fat in overweight and obese youth. MATERIALS AND METHODS A computerized search was made using three databases. The analysis was restricted to studies that examined the effect of supervised exercise interventions on abdominal fat (visceral and subcutaneous fat), liver enzymes (alanine aminotransferase, aspartate aminotransferase, and gamma-glutamyl transferase), and intrahepatic fat. Fourteen clinical trials (1231 youths) were eligible for inclusion in this systematic review and meta-analysis. Standardized mean difference [SMD] and 95% confidence intervals (CIs) were calculated. RESULTS Exercise was associated with a significant reduction in visceral (SMD = -0.661; 95% CI, -0.976 to -0.346; p < 0.001), subcutaneous (SMD = -0.352; 95% CI, -0.517 to -0.186; p < 0.001) and intrahepatic fat (SMD = -0.802; 95% CI, -1.124 to -0.480; p < 0.001), as well as gamma-glutamyl transferase (SMD = -0.726; 95% CI, -1.203 to -0.249; p < 0.001), but did not alter any other liver enzyme. Subgroup analysis recommends exercise programs that involve aerobic exercise longer than three sessions per week. CONCLUSIONS This meta-analysis supports current recommendation for physical exercise, mainly aerobic, as an effective intervention for nonalcoholic fatty liver disease progression by targeting hepatic lipid composition, visceral and subcutaneous adipose tissue. Systematic review registration: PROSPERO CRD42016042163.
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Affiliation(s)
- Katherine González-Ruiz
- 1 Centro de Estudios para la Medición de la Actividad Física (CEMA), Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario , Bogotá DC, Colombia .,2 Grupo de Investigación en Ejercicio Físico y Deporte, Vicerrectoría de investigación, Universidad Manuela Beltrán , Bogotá, DC, Colombia
| | - Robinson Ramírez-Vélez
- 1 Centro de Estudios para la Medición de la Actividad Física (CEMA), Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario , Bogotá DC, Colombia
| | - Jorge Enrique Correa-Bautista
- 1 Centro de Estudios para la Medición de la Actividad Física (CEMA), Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario , Bogotá DC, Colombia
| | - Mark D Peterson
- 3 Department of Physical Medicine and Rehabilitation, University of Michigan , Ann Arbor, MI.,4 Global REACH, University of Michigan Medical School, University of Michigan , Ann Arbor, MI
| | - Antonio García-Hermoso
- 5 Laboratorio de Ciencias de la Actividad Física, el Deporte y la Salud, Facultad de Ciencias Médicas, Universidad de Santiago de Chile (USACH) , Santiago, Chile
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