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Joint associations of physical activity and sedentary behaviors with body mass index: results from a time use survey of US adults.
Int J Obes (Lond) 2009; 33(12):1427-36IJ

Abstract

OBJECTIVE

Obesity risk is negatively associated with physical activity and positively associated with time spent in sedentary behaviors. Yet, it is not known how different combinations of sedentary and active behavior are associated with body mass index (BMI). This study examined the interaction between time spent in physical activity and sedentary behavior on BMI in US adults.

DESIGN

Cross-sectional, data from the 2006 American Time Use Survey.

SUBJECTS

10 984 non-underweight adults (aged 21 + years).

MEASUREMENT

A phone interview assessed all activities performed in the past 24 h, height, weight, health status, and other sociodemographic characteristics. Time spent in (1) moderate-to-vigorous leisure-time physical activity (MVPA), (2) active transportation (walking, biking), (3) sedentary leisure activities (TV/movie watching, computer use, playing games, reading), and (4) sedentary transportation (motorized vehicles) was determined from activity coding. BMI was calculated.

RESULTS

After adjusting for age, gender, education level, race/ethnicity, and health status, sample-weighted linear regressions found significant interactions for leisure MVPA x TV/movies, leisure MVPA x playing games, active transportation x sedentary transportation, and active transportation x reading (Ps<0.0001). For example, the group of adults watching <60 min per day of TV/movies and engaging in > or =60 min per day of leisure MVPA had lower average BMI compared to the group watching <60 min per day of TV/movies and reporting <60 min per day of leisure MVPA (P<0.0001). In contrast, for adults watching > or =189 min per day of TV/movies, there was not a significant difference in BMI by time spent in leisure MVPA.

CONCLUSION

Data from a US time use survey indicate that the strength of the association between certain types of sedentary behavior and BMI varies according to time spent in certain types of physical activity and vice versa.

Authors+Show Affiliations

Health Promotion Research Branch, Behavioral Research Program, Division of Cancer Control and Population Sciences, National Cancer Institute, Bethesda, MD, USA. dunton@usc.eduNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, N.I.H., Extramural

Language

eng

PubMed ID

19806160

Citation

Dunton, G F., et al. "Joint Associations of Physical Activity and Sedentary Behaviors With Body Mass Index: Results From a Time Use Survey of US Adults." International Journal of Obesity (2005), vol. 33, no. 12, 2009, pp. 1427-36.
Dunton GF, Berrigan D, Ballard-Barbash R, et al. Joint associations of physical activity and sedentary behaviors with body mass index: results from a time use survey of US adults. Int J Obes (Lond). 2009;33(12):1427-36.
Dunton, G. F., Berrigan, D., Ballard-Barbash, R., Graubard, B., & Atienza, A. A. (2009). Joint associations of physical activity and sedentary behaviors with body mass index: results from a time use survey of US adults. International Journal of Obesity (2005), 33(12), pp. 1427-36. doi:10.1038/ijo.2009.174.
Dunton GF, et al. Joint Associations of Physical Activity and Sedentary Behaviors With Body Mass Index: Results From a Time Use Survey of US Adults. Int J Obes (Lond). 2009;33(12):1427-36. PubMed PMID: 19806160.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Joint associations of physical activity and sedentary behaviors with body mass index: results from a time use survey of US adults. AU - Dunton,G F, AU - Berrigan,D, AU - Ballard-Barbash,R, AU - Graubard,B, AU - Atienza,A A, PY - 2009/10/7/entrez PY - 2009/10/7/pubmed PY - 2010/10/23/medline SP - 1427 EP - 36 JF - International journal of obesity (2005) JO - Int J Obes (Lond) VL - 33 IS - 12 N2 - OBJECTIVE: Obesity risk is negatively associated with physical activity and positively associated with time spent in sedentary behaviors. Yet, it is not known how different combinations of sedentary and active behavior are associated with body mass index (BMI). This study examined the interaction between time spent in physical activity and sedentary behavior on BMI in US adults. DESIGN: Cross-sectional, data from the 2006 American Time Use Survey. SUBJECTS: 10 984 non-underweight adults (aged 21 + years). MEASUREMENT: A phone interview assessed all activities performed in the past 24 h, height, weight, health status, and other sociodemographic characteristics. Time spent in (1) moderate-to-vigorous leisure-time physical activity (MVPA), (2) active transportation (walking, biking), (3) sedentary leisure activities (TV/movie watching, computer use, playing games, reading), and (4) sedentary transportation (motorized vehicles) was determined from activity coding. BMI was calculated. RESULTS: After adjusting for age, gender, education level, race/ethnicity, and health status, sample-weighted linear regressions found significant interactions for leisure MVPA x TV/movies, leisure MVPA x playing games, active transportation x sedentary transportation, and active transportation x reading (Ps<0.0001). For example, the group of adults watching <60 min per day of TV/movies and engaging in > or =60 min per day of leisure MVPA had lower average BMI compared to the group watching <60 min per day of TV/movies and reporting <60 min per day of leisure MVPA (P<0.0001). In contrast, for adults watching > or =189 min per day of TV/movies, there was not a significant difference in BMI by time spent in leisure MVPA. CONCLUSION: Data from a US time use survey indicate that the strength of the association between certain types of sedentary behavior and BMI varies according to time spent in certain types of physical activity and vice versa. SN - 1476-5497 UR - https://www.unboundmedicine.com/medline/citation/19806160/Joint_associations_of_physical_activity_and_sedentary_behaviors_with_body_mass_index:_results_from_a_time_use_survey_of_US_adults_ L2 - http://dx.doi.org/10.1038/ijo.2009.174 DB - PRIME DP - Unbound Medicine ER -