Trends by Age in Youth Physical Activity
| Autor: | Susan A. Carlson, Aryeh D. Stein, Janet E. Fulton, Megan I. Wall, Sarah M. Lee |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Male
Media campaign Gerontology Adolescent Physical activity Physical Therapy Sports Therapy and Rehabilitation Baseline data Motor Activity medicine.disease Health Surveys Disease control United States Test (assessment) Leisure Activities Overall response rate Parental education medicine Humans Female Orthopedics and Sports Medicine Attrition Longitudinal Studies Child Psychology Sports |
| Zdroj: | Medicine & Science in Sports & Exercise. 43:2140-2147 |
| ISSN: | 0195-9131 |
| DOI: | 10.1249/mss.0b013e31821f561a |
| Popis: | Purpose: This study aimed to characterize longitudinal age trajectories across 5 yr in the prevalence of free-time and organized physical activity participation among US youth by sex, race, and parental education. Methods: Study participants were a nationally representative sample of youth, 9-13 yr old in 2002, who participated in the Centers for Disease Control and Prevention's Youth Media Campaign Longitudinal Survey. Baseline data were collected in 2002. Attrition for the next 4 yr resulted in an overall response rate of 23% by 2006 (n = 1623). The survey collected information concerning respondents' frequency of participation in free-time and organized physical activities outside school. Organized activities were defined as activities involving a coach, instructor, or other leader. Orthogonal polynomial contrasts were used to test for linear and quadratic trends in respondents' participation free-time and organized physical activity sessions during the previous 7 d over ages 9-17. Pairwise t-tests were used to determine whether age-specific estimates of participation rates differed significantly by sex, race, and parental education level. Results: Free-time physical activity participation prevalence declined linearly from ages 9 to 17 in both sexes but also demonstrated a quadratic trajectory in boys, peaking at age 13. Organized physical activity demonstrated a quadratic trajectory and declined most notably after age 14 in both sexes. Free-time physical activity participation was lower in girls compared with boys between ages 12 and 16 (difference range = 12-17 percentage points). Both non-white youth and those with less educated parents had lower organized physical activity participation at most ages (difference range = 15-29 percentage points). Conclusions: Free-time and organized physical activity exhibit different trajectories between ages 9 and 17 and are subject to dissimilar demographic level variation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|