Abstract
The aim of this study was to determine the effectof different exercise doses on weight loss in obese/overweight children. PubMed, Embase, SPORTDiscus, and the Cochrane library were searched from inception to November 2020 for randomized controlled trials. Fourty sixtrials involving 2,599 obese/overweight children were finally included. Different exercise dose interventions had different impacts. Exercise intervention reduce body weight (BW) by 1.46kg (95% CI,-2.35 to-0.56, p=0.001), body fat percentage (BF%) by 2.24 (95% CI,-2.63 to-1.84, p<0.001) and body mass index (BMI) by 1.09kg/m2 (95% CI,-1.45 to-0.73, p<0.001). Each MET-h/week was association with 0.147kg (95% CI,-0.287 to-0.007, p=0.039) decrease in BW, 0.060 (95% CI,-0.118 to-0.002, p=0.042) decrease in BF%, and 0.069kg/m2 (95% CI,-0.125 to-0.014, p=0.015) decrease in BMI. The findings suggest that there is a positive liner between exercise dose and weight loss, each MET-h/week associated with 0.147kg, 0.060 and 0.069kg/m2 decrease in body weight, BF%, BMI, respectively.
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