OBJECTIVE: To determine the association between physical activity (PA) intensities and cardiometabolic risk factors in youth. DESIGN: Cross-sectional study using data from the 2008 Healthy Hearts Prospective Cohort Study of Physical Activity and Cardiometabolic Health in Youth. SETTING: Rural and urban communities in Alberta, Canada. PARTICIPANTS: A convenience sample of 605 youth aged 9 to 17 years. Youth were on average aged 12.1 years, 248 were boys (41%), and 157 were overweight or obese (26%). MAIN EXPOSURE: Actical accelerometer-measured PA intensity. MAIN OUTCOMES MEASURES: The primary outcome was body mass index (calculated as weight in kilograms divided by height in meters squared) z score. Secondary outcome measures included waist circumference, systolic blood pressure, and cardiorespiratory fitness (maximal oxygen consumption [[Vdot]O2max]). 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.
OBJECTIVE: To determine the association between physical activity (PA) intensities and cardiometabolic risk factors in youth. DESIGN: Cross-sectional study using data from the 2008 Healthy Hearts Prospective Cohort Study of Physical Activity and Cardiometabolic Health in Youth. SETTING: Rural and urban communities in Alberta, Canada. PARTICIPANTS: A convenience sample of 605 youth aged 9 to 17 years. Youth were on average aged 12.1 years, 248 were boys (41%), and 157 were overweight or obese (26%). MAIN EXPOSURE: Actical accelerometer-measured PA intensity. MAIN OUTCOMES MEASURES: The primary outcome was body mass index (calculated as weight in kilograms divided by height in meters squared) z score. Secondary outcome measures included waist circumference, systolic blood pressure, and cardiorespiratory fitness (maximal oxygen consumption [[Vdot]O2max]). 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.
Authors: V Carson; R L Rinaldi; B Torrance; K Maximova; G D C Ball; S R Majumdar; R C Plotnikoff; P Veugelers; N G Boulé; P Wozny; L McCargar; S Downs; C Daymont; R Lewanczuk; J McGavock Journal: Int J Obes (Lond) Date: 2013-07-26 Impact factor: 5.095
Authors: Nicolas M Oreskovic; Elizabeth Goodman; Alyssa I Robinson; Eliana M Perrin; James M Perrin Journal: Child Obes Date: 2014-03-11 Impact factor: 2.992
Authors: Sarah G Sanders; Elizabeth Yakes Jimenez; Natalie H Cole; Alena Kuhlemeier; Grace L McCauley; M Lee Van Horn; Alberta S Kong Journal: J Phys Act Health Date: 2019-07-17
Authors: Andrea K Chomistek; Beate Henschel; A Heather Eliassen; Kenneth J Mukamal; Eric B Rimm Journal: Circulation Date: 2016-07-26 Impact factor: 29.690
Authors: Renee M Jeffreys; Thomas H Inge; Todd M Jenkins; Wendy C King; Vedran Oruc; Andrew D Douglas; Molly S Bray Journal: J Phys Act Health Date: 2014-09-10
Authors: Paul J Collings; Soren Brage; Daniel D Bingham; Silvia Costa; Jane West; Rosemary R C McEachan; John Wright; Sally E Barber Journal: Med Sci Sports Exerc Date: 2017-05 Impact factor: 5.411