Cardiorespiratory Fitness and Proximity to Commercial Physical Activity Facilities Among 12th Grade Girls

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• 作者：Marsha Dowda ; Dr.P.H.^a ; ^{mdowda@mailbox.sc.edu} ; Karin A. Pfeiffer ; Ph.D.^b ; Felipe Lobelo ; M.D. ; Ph.D.^c ; Dwayne E. Porter ; Ph.D.^d ; Russell R. Pate ; Ph.D.^a
• 关键词：Fitness ; Geographic Information Systems ; Physical activity
• 刊名：Journal of Adolescent Health
• 出版年：2012
• 出版时间：May, 2012
• 年：2012
• 卷：50
• 期：5
• 页码：497-502
• 全文大小：419 K

文摘

Purpose

To investigate the relationship between proximity to commercial physical activity (PA) facilities and cardiorespiratory fitness of 12th grade girls.

Methods

Adolescent girls (n = 786, 60 % African American, mean age = 17.6 ¡À .6 years) performed a submaximal fitness test (Physical Work Capacity 170 test). Commercial PA facilities were mapped and counted within a .75-mile street-network buffer around girls' homes using Geographic Information Systems. Sedentary activities and vigorous physical activity (? metabolic equivalents) were determined by the average number of 30-minute blocks reported per day on the 3-Day Physical Activity Recall. Mixed model regressions were calculated using school as a random variable.

Results

Girls had higher weight-relative Physical Work Capacity 170 test scores if there was a commercial PA facility (n = 186, 12.4 ¡À 4.2 kg m/min/kg) within a .75-mile street-network buffer of home as compared with girls without a nearby facility (n = 600, 11.2 ¡À 3.6 kg m/min/kg). After adjusting for demographic variables, sports participation, sedentary behaviors, and vigorous physical activity, having one or more commercial PA facilities within a .75-mile street-network buffer of homes was significantly related to cardiorespiratory fitness.

Conclusions

Both with and without adjustment for covariates, the presence of a commercial PA facility within a .75-mile street-network buffer of a girl's home was associated with higher cardiorespiratory fitness.