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The associations of physical activity, sedentary time, and sleep with V˙O2max in trained and untrained children and adolescents: A novel five-part compositional analysis
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The associations of physical activity, sedentary time, and sleep with V˙O2max in trained and untrained children and adolescents: A novel five-part compositional analysis
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The associations of physical activity, sedentary time, and sleep with V˙O2max in trained and untrained children and adolescents: A novel five-part compositional analysis
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Journal Article
The associations of physical activity, sedentary time, and sleep with V˙O2max in trained and untrained children and adolescents: A novel five-part compositional analysis
2023
Overview
The benefits of physical activity (PA) and the negative impacts of sedentary time (SED) on both short- and long-term health in youth are well established. However, uncertainty remains about how PA and SED jointly influence maximal oxygen uptake ( V ˙ O 2 max ). Therefore, the aim of this study was to determine the joint influence of PA and SED on V ˙ O 2 max using compositional analyses. 176 adolescents (84 girls, 13.8 ± 1.8 years) completed an incremental ramp test and supramaximal validation bout on a cycle ergometer, with PA and SED recorded for seven consecutive days on the right hip using a ActiGraph GT3X accelerometer. Time spent in Sleep, SED, light, moderate and vigorous PA was analysed using a compositional linear regression model. Compositions with 10 minutes more time in vigorous PA (> 27.5 mins⋅day -1 ) compared to the average 17.5 mins⋅day -1 were associated with a + 2.9% - 11.1% higher absolute and scaled V ˙ O 2 max whilst compositions with less (> -10 mins⋅day -1 ) VPA were associated with a reduced absolute and allometrically scaled V ˙ O 2 max (-4.6% - 24.4%). All associations were irrespective of sex, maturity, and training status. The proportion of time spent sedentary had little impact on absolute and scaled V ˙ O 2 max (0.01–1.98%). These findings therefore highlight that intensity of PA may be of greater importance for increases in V ˙ O 2 max than reductions in SED and should be incorporated into future intervention designs.
