The effect of diet or exercise on visceral adipose tissue in overweight youthThe effect of diet or exercise on visceral adipose tissue in overweight youth
Faculty of Medicine and Health Sciences
Rehabilitation Sciences and Physiotherapy (REVAKI)
2016Madison, Wis., 2016
Medicine and science in sports and exercise. - Madison, Wis., 1980, currens
48(2016):7, p. 1415-1424
University of Antwerp
Objective: Excess visceral adipose tissue (VAT) in children with obesity is associated with development of cardiovascular and metabolic disease. This meta-analysis investigated if lifestyle interventions can reduce VAT in overweight and obese youth. Methods: Pubmed, Cochrane and PEDro were searched for clinical trials that objectively assessed VAT and included study arms with supervised diet, exercise or a combination. If there was a no-therapy‟ control group, the data of the control group and the intervention groups were used to meta-analyze the data. In all other cases the pre-intervention and the post-intervention data were used to meta-analyze. Effect sizes were calculated as standardized mean differences or changes of VAT and expressed as Hedges‟g. Results: The overall weighted mean effect size on VAT of all included interventions was - 0.69 [95%CI = -0.90 to -0.48] (p <0.001). Subgroup analysis showed that the overall weighted mean effect size of diet-only interventions on VAT was 0.23 [95%CI = -0.22 to 0.68] (p =0.311). Interventions that combined diet and exercise showed a pooled effect size on VAT of - 0.55 [95%CI = -0.75 to -0.39] (p <0.001). The pooled effect size of exercise-only interventions on VAT was -0.85 [95%CI = -1.20 to -0.57] (p <0.001). Conclusions: Supervised exercise-only or combined diet and exercise interventions can reduce VAT in overweight and obese children and adolescents. The strongest effect was found in exercise-only groups. However, high quality RCT‟s describing the effect of supervised dietary interventions on VAT in children are lacking.