体质指数
心理学
体力活动
人口学
医学
物理疗法
内科学
社会学
作者
Shauna Solomon-Krakus,Catherine M. Sabiston,Jennifer Brunet,Andrée L. Castonguay,Mélanie Henderson
出处
期刊:Pediatric Exercise Science
[Human Kinetics]
日期:2020-03-09
卷期号:32 (2): 105-111
被引量:2
标识
DOI:10.1123/pes.2019-0184
摘要
Purpose : This study examined the association between self-perceived actual and ideal body sizes and objectively assessed moderate-to-vigorous physical activity (MVPA) among adolescents, controlling for puberty, fat mass index, and sex. A secondary objective was to explore the association between objectively assessed fat mass index and MVPA. Methods : Participants were 438 early adolescents ( M age = 11.61, SD = 0.92). Participants selected body sizes that represented their self-perceived actual and ideal bodies. Participants then wore an accelerometer for 1 week to assess MVPA. Polynomial regression analysis with response surface methods was used to explore MVPA in relation to the discrepancy and agreement (ie, no discrepancy) between self-perceived actual and ideal body sizes. Results : When self-perceived actual and ideal body sizes were in agreement and represented smaller and larger bodies, MVPA was low. Participants with similar self-perceived actual and ideal bodies in the middle of the body-size spectrum demonstrated the highest levels of MVPA. The direction and degree of the discrepancy between self-perceived actual and ideal bodies were not significantly associated with MVPA. Fat mass index was significantly and negatively associated with MVPA. Conclusions : These findings may inform physical activity promotion programs and provide methodological contributions to the study of how body image and MVPA are related.
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