TY - JOUR
T1 - Longitudinal physical activity changes in adolescents
T2 - Ho Chi Minh City Youth Cohort
AU - Trang, Nguyen Hoang Hanh Doan
AU - Hong, Tang Kim
AU - Van Der Ploeg, Hidde P.
AU - Hardy, Louise L.
AU - Kelly, Patrick J.
AU - Dibley, Michael J.
PY - 2012/8/1
Y1 - 2012/8/1
N2 - Purpose: This study aimed to describe the 5-yr longitudinal change in moderate-to-vigorous physical activity (MVPA) among urban adolescents in Ho Chi Minh City, Vietnam, and to identify individual, family, and environmental factors associated with changes in MVPA. Methods: The Ho Chi Minh City Youth Cohort is a 5-yr longitudinal cohort with systematic random sampling of 759 students (48% boys) from 18 junior high schools in Ho Chi Minh City, conducted from 2004 to 2009. All measures were taken on five separate occassions. MVPA was assessed by self-report and accelerometry. Data were analyzed using multilevel linear regression models with estimation by generalized linear latent and mixed models. Results: Overall, after adjusting for covariates, students' accelerometer-based MVPA reduced 38% per annum (rate ratio = 0.62, 95% confidence interval (CI) = 0.59-0.64). Boys spent 2.9 times more in MVPA (rate ratio = 2.94, 95% CI = 2.63-3.22) than their female peers. Compared with normal-weight adolescents, overweight and obese adolescents were doing 40% (rate ratio = 0.60, 95% CI = 0.53, 0.67) less MVPA. Conclusions: MVPA significantly declined among Vietnamese adolescents with age. This finding is similar to those reported among Western adolescents and suggests that strategies to promote physical activity in adolescents are a priority in Vietnam because economic transitioning potentially increases the risk of adopting unhealthy lifestyle behaviors associated with obesity and chronic diseases.
AB - Purpose: This study aimed to describe the 5-yr longitudinal change in moderate-to-vigorous physical activity (MVPA) among urban adolescents in Ho Chi Minh City, Vietnam, and to identify individual, family, and environmental factors associated with changes in MVPA. Methods: The Ho Chi Minh City Youth Cohort is a 5-yr longitudinal cohort with systematic random sampling of 759 students (48% boys) from 18 junior high schools in Ho Chi Minh City, conducted from 2004 to 2009. All measures were taken on five separate occassions. MVPA was assessed by self-report and accelerometry. Data were analyzed using multilevel linear regression models with estimation by generalized linear latent and mixed models. Results: Overall, after adjusting for covariates, students' accelerometer-based MVPA reduced 38% per annum (rate ratio = 0.62, 95% confidence interval (CI) = 0.59-0.64). Boys spent 2.9 times more in MVPA (rate ratio = 2.94, 95% CI = 2.63-3.22) than their female peers. Compared with normal-weight adolescents, overweight and obese adolescents were doing 40% (rate ratio = 0.60, 95% CI = 0.53, 0.67) less MVPA. Conclusions: MVPA significantly declined among Vietnamese adolescents with age. This finding is similar to those reported among Western adolescents and suggests that strategies to promote physical activity in adolescents are a priority in Vietnam because economic transitioning potentially increases the risk of adopting unhealthy lifestyle behaviors associated with obesity and chronic diseases.
KW - MOderate-to-vigorous physical activity
KW - accelerometer
KW - adolescent physical activity recall questionnaire
KW - cohort study
KW - correlate
KW - vietnam
UR - http://www.scopus.com/inward/record.url?scp=84863987273&partnerID=8YFLogxK
U2 - https://doi.org/10.1249/MSS.0b013e31824e50dc
DO - https://doi.org/10.1249/MSS.0b013e31824e50dc
M3 - Article
C2 - 22330026
SN - 0195-9131
VL - 44
SP - 1481
EP - 1489
JO - Medicine and science in sports and exercise
JF - Medicine and science in sports and exercise
IS - 8
ER -