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Changes in sedentary behavior among adolescent girls: a 2.5-year prospective cohort study.
J Adolesc Health. 2007 Feb; 40(2):158-65.JA

Abstract

PURPOSE

To describe longitudinal changes in leisure-time sedentary behavior among girls, during early to mid-adolescence.

METHODS

A 2.5-year prospective cohort study, comprising 5 data collections, 6 months apart, between 2000 and 2002. Girls aged 12-15 years (n = 200) from 8 high schools located in Sydney, Australia, self-reported the usual time spent each week in a comprehensive range of sedentary behaviors.

RESULTS

Retention rate for the study was 82%. Girls aged 12.8 years spent approximately 45% of their discretionary time in sedentary behavior, which increased to 63% at age 14.9 years. Watching TV, videos, and playing video games (small screen recreation; SSR) was the most popular sedentary pastime, accounting for 33% of time spent in sedentariness, followed by homework and reading (25%). Sedentary behavior increased 1.4 and 3.3 hours on week and weekend days, respectively. On weekdays, increased time was spent on hobbies (27 min/day) and on weekend days, increased time was spent sitting around talking with friends (60 min/day), computer use (37 min/day), and television viewing (34 min/day).

CONCLUSIONS

Among girls, the transition between early and mid-adolescence was accompanied by a significant increase in leisure-time sedentary behavior. Interventions to reduce sedentariness among adolescent girls are best to focus on weekend behaviors. Studies seeking to examine the association between inactivity and the development of chronic health problems need to examine a diverse range of activities that comprehensively measure sedentariness. This information will provide a better understanding of inactivity patterns among adolescent girls.

Authors+Show Affiliations

NSW Centre for Overweight and Obesity, University of Sydney, Sydney, Australia. louiseh@health.usyd.edu.auNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17259056

Citation

Hardy, Louise L., et al. "Changes in Sedentary Behavior Among Adolescent Girls: a 2.5-year Prospective Cohort Study." The Journal of Adolescent Health : Official Publication of the Society for Adolescent Medicine, vol. 40, no. 2, 2007, pp. 158-65.
Hardy LL, Bass SL, Booth ML. Changes in sedentary behavior among adolescent girls: a 2.5-year prospective cohort study. J Adolesc Health. 2007;40(2):158-65.
Hardy, L. L., Bass, S. L., & Booth, M. L. (2007). Changes in sedentary behavior among adolescent girls: a 2.5-year prospective cohort study. The Journal of Adolescent Health : Official Publication of the Society for Adolescent Medicine, 40(2), 158-65.
Hardy LL, Bass SL, Booth ML. Changes in Sedentary Behavior Among Adolescent Girls: a 2.5-year Prospective Cohort Study. J Adolesc Health. 2007;40(2):158-65. PubMed PMID: 17259056.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Changes in sedentary behavior among adolescent girls: a 2.5-year prospective cohort study. AU - Hardy,Louise L, AU - Bass,Shona L, AU - Booth,Michael L, Y1 - 2006/11/29/ PY - 2006/04/03/received PY - 2006/09/01/revised PY - 2006/09/05/accepted PY - 2007/1/30/pubmed PY - 2007/4/4/medline PY - 2007/1/30/entrez SP - 158 EP - 65 JF - The Journal of adolescent health : official publication of the Society for Adolescent Medicine JO - J Adolesc Health VL - 40 IS - 2 N2 - PURPOSE: To describe longitudinal changes in leisure-time sedentary behavior among girls, during early to mid-adolescence. METHODS: A 2.5-year prospective cohort study, comprising 5 data collections, 6 months apart, between 2000 and 2002. Girls aged 12-15 years (n = 200) from 8 high schools located in Sydney, Australia, self-reported the usual time spent each week in a comprehensive range of sedentary behaviors. RESULTS: Retention rate for the study was 82%. Girls aged 12.8 years spent approximately 45% of their discretionary time in sedentary behavior, which increased to 63% at age 14.9 years. Watching TV, videos, and playing video games (small screen recreation; SSR) was the most popular sedentary pastime, accounting for 33% of time spent in sedentariness, followed by homework and reading (25%). Sedentary behavior increased 1.4 and 3.3 hours on week and weekend days, respectively. On weekdays, increased time was spent on hobbies (27 min/day) and on weekend days, increased time was spent sitting around talking with friends (60 min/day), computer use (37 min/day), and television viewing (34 min/day). CONCLUSIONS: Among girls, the transition between early and mid-adolescence was accompanied by a significant increase in leisure-time sedentary behavior. Interventions to reduce sedentariness among adolescent girls are best to focus on weekend behaviors. Studies seeking to examine the association between inactivity and the development of chronic health problems need to examine a diverse range of activities that comprehensively measure sedentariness. This information will provide a better understanding of inactivity patterns among adolescent girls. SN - 1879-1972 UR - https://www.unboundmedicine.com/medline/citation/17259056/Changes_in_sedentary_behavior_among_adolescent_girls:_a_2_5_year_prospective_cohort_study_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1054-139X(06)00336-3 DB - PRIME DP - Unbound Medicine ER -