Temporal trends in and relationships between screen time, physical activity, overweight and obesity

BMC Public Health

Research Article

Corneel Vandelanotte¹  Christine Hanley¹  Mitch J Duncan¹  Cristina Caperchione²  W Kerry Mummery³ 

[1] Centre for Physical Activity Studies, CQUniversity, Institute for Health and Social Science Research, Rockhampton, Bld 18, CQUniversity Australia, 4702, Rockhampton, QLD, Australia;Faculty of Health and Social Development, University of British Columbia, Kelowna, Canada;Faculty of Physical Education and Recreation, University of Alberta, Edmonton, Canada;

关键词: Temporal trends;    Obesity;    Screen time;    Physical activity;    Adults;   

DOI  :  10.1186/1471-2458-12-1060

 received in 2012-01-26, accepted in 2012-11-30,  发布年份 2012

来源: Springer

【 摘 要 】

BackgroundThe aims of this study were to examine temporal trends in the prevalence of sufficient moderate-to-vigorous intensity physical activity (MVPA), high levels of screen time, combined measures of these behaviors and overweight or obesity in Australian adults during the period 2002–2008. Trends over this time period in overweight or obesity within each behavior group (sufficient/insufficient MVPA, high/low screen time and combined behaviors) were also examined.MethodsData were collected via annually conducted cross-sectional computer-assisted-telephone-interviews (CATI) of adults (n=7908) living in Central Queensland, Australia (2002–2008). Self-reported MVPA, screen time (TV viewing and computer use), and BMI were used to create dichotomous classifications of physical activity (Sufficient MVPA (S-MVPA), Insufficient Physical Activity (I-MVPA)), screen time (High Screen Time (HST), Low Screen Time (LST)), combined behavior categories (S-MVPA/LST, I-MVPA/LST, S-MVPA/HST, I-MVPA/HST) and BMI (Overweight or Obese, Healthy Weight) respectively.ResultsThe prevalence of S-MVPA, HST, and overweight or obesity increased at approximately the same rate over the study period in the overall sample and females (p≤0.05). In the overall sample and in females, the prevalence of overweight and obesity increased over the study period in those individuals classified as I-MVPA/HST (p≤0.05).ConclusionResults provide evidence that while the prevalence of S-MVPA appears to be modestly increasing, the proportion of the population engaging in HST and classified as overweight or obese are increasing at approximately the same rate. These observations highlight the need to increase levels of total physical activity (including light intensity physical activity) and decrease sedentary behavior including screen time.

【 授权许可】

CC BY   
© Duncan et al.; licensee BioMed Central Ltd. 2012