期刊
JOURNAL OF SPORTS SCIENCES
卷 36, 期 15, 页码 1720-1726出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/02640414.2017.1411176
关键词
Cardiorespiratory fitness; isotemporal substitution; sedentary behaviour; children; physical activity
资金
- Fundacao para a Ciencia e a Tecnologia [PTDC/DES/108372/2008, SFRH/BPD/92462/2013]
- Research Council of Norway [249932/F20]
Cardiorespiratory fitness (CRF) is associated with health benefits in children, improving cardiac morphology, cardiovascular disease risk factors, and biological outcomes. This study aimed to examine the substitution effects of displaying a fixed duration of sedentary time with a fixed duration of physical activity (PA) at different intensities on children's CRF. A total of 315 children (136 boys) were assessed (age: 10.6 +/- 0.6years old). Outcomes at baseline and follow-up (16-months) were CRF determined using a maximal cycle test and sedentary time and PA measured with accelerometers. Data were analysed by isotemporal substitution analyses estimating the effect of reallocating 30min/day of sedentary time by light (LPA), moderate (MPA) and vigorous physical activity (VPA) on CRF. VPA was positively and significantly associated with CRF cross-sectional (=0.026, p<0.001) and prospectively (=0.010, p<0.001). Reallocating 30min/day of sedentary time into VPA was positively cross-sectionally (=0.780, p<0.001) and prospectively (=0.303, p<0.05) associated with CRF. Conversely, relocating 30-minutes of sedentary time into 30minutes of LPA and MPA was not associated with CRF. These results suggest that reallocating an equal amount of time from sedentary into VPA is cross-sectional and prospectively associated with a favourable CRF.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据