VPA was more strongly associated with reduced body fat and central adiposity compared with MPA and /or MVPA .
Additionally , VPA was more strongly associated with increased CRF when compared with lower intensities .
Findings were inconclusive between all PA intensity levels and CM biomarkers , and several significant relationships observed for VPA were attenuated when controlling for CRF .
A potential VPA dose is identified as yielding favorable health benefits in adiposity and fitness .
While CM biomarkers were not consistently associated with PA intensity level , the literature suggests VPA may yield health benefits above those received from MPA for reduced adiposity and improved CRF .
Background .
Increasing evidence suggests that vigorous physical activity ( VPA ) in youth may yield greater health benefits than moderate ( MPA ) or moderate-to-vigorous physical activity ( MVPA ) .
The purpose of this review was to assess the relationship between PA intensity and body composition , cardiorespiratory fitness ( CRF ) , and cardiometabolic ( CM ) biomarkers in youth .
Objectively measured daily physical activity related to aerobic fitness in young children
Abstract The purpose of this study was to investigate by direct measurement the cross-sectional relationship between accelerometer-measured physical activity and peak oxygen uptake ( [Vdot]O2peak : ml · min−1 · kg−1 ) , in a population -based cohort of young children , since such data are scarce . The study included 468 children ( 246 boys , 222 girls ) aged 6.7 ± 0.4 years , recruited from a population -based cohort . Peak oxygen uptake was measured by indirect calorimetry during a maximal treadmill exercise test . Physical activity was assessed by accelerometers over a 4-day period . Minutes of sedentary , light , moderate , moderate-to-vigorous , and vigorous activity per day were calculated . Mean counts per minute were considered to reflect total physical activity . Pearson correlation coefficients indicated a weak relationship between daily physical activity variables and [Vdot]O2peak in boys ( r = 0.15–0.28 , P < 0.05 ) , with the exception of time in sedentary and light activity , which was not related to [Vdot]O2peak . None of the daily physical activity variables were related to [Vdot]O2peak in girls , with the exception of a very weak relationship for moderate activity ( r = 0.14 , P < 0.05 ) . Multiple regression analyses indicated that the various physical activity variables explained between 2 and 8 % of the variance in [Vdot]O2peak in boys . In this population -based cohort , most daily activity variables were positively related to aerobic fitness in boys , whereas less clear relationships were observed in girls . Our finding  that physical activity was only uniformly related to aerobic fitness in boys partly contradicts previous studies in older children and adolescents
VPA was more strongly associated with reduced body fat and central adiposity compared with MPA and /or MVPA .
Additionally , VPA was more strongly associated with increased CRF when compared with lower intensities .
Findings were inconclusive between all PA intensity levels and CM biomarkers , and several significant relationships observed for VPA were attenuated when controlling for CRF .
A potential VPA dose is identified as yielding favorable health benefits in adiposity and fitness .
While CM biomarkers were not consistently associated with PA intensity level , the literature suggests VPA may yield health benefits above those received from MPA for reduced adiposity and improved CRF .
Background .
Increasing evidence suggests that vigorous physical activity ( VPA ) in youth may yield greater health benefits than moderate ( MPA ) or moderate-to-vigorous physical activity ( MVPA ) .
The purpose of this review was to assess the relationship between PA intensity and body composition , cardiorespiratory fitness ( CRF ) , and cardiometabolic ( CM ) biomarkers in youth .