/manager/Index ${session.getAttribute("locale")} 5 The role of self-efficacy in explaining gender differences in physical activity among adolescents: a multilevel analysis /manager/Repository/uon:9380 Sat 24 Mar 2018 10:45:36 AEDT ]]> A mixed methods evaluation of televised health promotion advertisements targeted at older adults /manager/Repository/uon:15354 Sat 24 Mar 2018 08:25:44 AEDT ]]> A test of the theory of planned behavior to predict physical activity in an overweight/obese population sample of adolescents from Alberta, Canada /manager/Repository/uon:20213 Sat 24 Mar 2018 08:06:51 AEDT ]]> Physical activity intensity and cardiometabolic risk in youth /manager/Repository/uon:20708 2max]). Results: Body mass index z score, waist circumference, and systolic blood pressure decreased and [Vdot]O2max increased in a dose-response manner across tertiles of vigorous PA (adjusted P < .001). No significant differences in cardiometabolic risk factors were seen across tertiles of moderate or light PA in multivariable analyses. Achieving more than 7 minutes of vigorous PA daily was associated with a reduced adjusted odds ratio of overweight status (0.56; 95% CI, 0.33-0.95) and elevated systolic blood pressure (0.36; 95% CI, 0.16-0.79). The odds of overweight status and elevated blood pressure decreased with increasing time and intensity of PA. Conclusions: Only vigorous PA was consistently associated with lower levels of waist circumference, body mass index z score, systolic blood pressure, and increased cardiorespiratory fitness in youth. These findings underscore the importance of vigorous PA in guidelines for children and adolescents.]]> Sat 24 Mar 2018 08:06:22 AEDT ]]> A test of the theory of planned behavior to explain physical activity in a large population sample of adolescents from Alberta, Canada /manager/Repository/uon:17555 Sat 24 Mar 2018 08:03:51 AEDT ]]> Outdoor time is associated with physical activity, sedentary time, and cardiorespiratory fitness in youth /manager/Repository/uon:20907 6500 counts/min). Secondary outcomes included sedentary behavior, cardiorespiratory fitness, overweight status, and blood pressure. Results: Among the 306 youth studied, those who reported spending most/all of their after-school time outdoors (n = 120) participated in more MVPA (61.0 ± 24.3 vs 39.9 ± 19.1 min/day; adjusted P < .001), were more likely to achieve the recommended minimum 60 min/day of MVPA (aOR 2.8; 95% CI, 1.3-6.4), spent less time in sedentary activities (539 ± 97 min/day vs 610 ± 146 min/day; adjusted P < .001), and had higher cardiorespiratory fitness (49 ± 5 vs 45 ± 6 mL/kg/min; adjusted P < .001) than youth who reported no time outdoors (n = 52). No differences in overweight/obesity or blood pressure were observed across the groups. Conclusions: Time spent outdoors is positively associated with MVPA and cardiorespiratory fitness in youth and negatively associated with sedentary behavior. Experimental trials are needed to determine whether strategies designed to increase time spent outdoors exert a positive influence on physical activity and fitness levels in youth.]]> Sat 24 Mar 2018 07:57:55 AEDT ]]>