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The association of objectively determined physical activity behavior among adolescent female friends
journal contributionposted on 06.12.2017, 00:00 by William MummeryWilliam Mummery, Grant SchofieldGrant Schofield, W Hopkins, Louise SchofieldLouise Schofield
The purpose of this study was to examine the extent to which physical activity among adolescent female friends is interdependent.The participants were 318 adolescent girls with a mean age of 16.0 years (range: 15–18 years). Pedometry was used to assess physical activity over 4 days. The relationship between an individual girl and her first-nominated reciprocal friend’s physical activity level was moderate (r = 0.45, 90% confidence interval = 0.31, 0.56), when the friendship was nonreciprocal it was trivial (r = -.06, 90% confidence interval = -.36. .25). Friends’ physical activity levels explained between 27% and 32% of an individual’s pedometer-determined physical activity level. Reciprocity of friendship is an important variable to consider when understanding the relationship between adolescent female friends’ physical activity. When friendships are reciprocal, there is a stronger relationship between friends’ physical activity.