Accelerometer-measured physical activity and sedentary behavior in Chinese children and adolescents: a systematic review and meta-analysis : revier paper

Abstract

Objective:To synthesize evidence on accelerometer-measured moderate-to-vigorous physical activity(MVPA) and sedentary behavior (SB) levels of Chinese children and adolescents.Study design:This is both a systematic review and meta-analysis study.Methods:Online databases were searched for studies published from January 2009 up to February 2019.These studies reported accelerometer-measured daily minutes of MVPA and/or SB among Chinesechildren and adolescents. Random-effects meta-analysis was used to separately pool the time spent inMVPA and SB.Results:Of 4754 records, 20 studies were included in the meta-analysis. Sample sizes ranged from 96 to2163. The meta-analysis showed that Chinese children and adolescents spent 41.11 min/day in MVPA and529.83 min/day in SB averagely. Boys spent more time in MVPA compared with girls (P¼0.01). Childrenaccumulated more MVPA time than adolescents (P¼0.05), and children spent less time in SB thanadolescents (P¼0.05). Unlike weekdays, SB was lower on weekends (P¼0.02). There were significantdifferences in children and adolescents’MVPA time in regions (P<0.001).Conclusions:MVPA level in Chinese children and adolescents is well below international recommen-dations, and their SB level is very high.