Raustorp Anders, Lindwall Magnus
Int J Adolesc Med Health. 2015 Feb;27(1):31-9. doi: 10.1515/ijamh-2014-0001.
One variable that has been consistently associated with adolescents' physical activity is perceived activity competence. Perceived physical (or sport) competence is considered a sub-domain to the physical self-esteem or self-worth (i.e., a person's valuation of what is good and worthy in their self-description).
This study aimed to describe levels of and inter-correlations among physical self-esteem, physical activity, and body mass index in a longitudinal design spanning adolescence to early adulthood.
At mean ages of 12.7, 15.7, 17.7 and 22.7 years, we measured perceived physical self-esteem in 39 (22 boys) Swedish adolescents. Physical activity (steps/day) for four consecutive schooldays, height, and weight were also measured.
No significant difference between the four time points for any variable of perceived physical self-esteem was seen, neither in boys nor girls. In general, all physical self-variables revealed non-linear trajectories across time, where the general trend was an increase during the younger ages followed by a decrease during older ages. At ages 12 and 15 years in boys and girls physical condition and physical strength as well as body attractiveness and physical strength, respectively, had the strongest correlations to physical self-esteem. At age 17 and 22 years sports competence had the strongest correlation to self-esteem in girls, while body attractiveness and physical strength had the strongest correlation to self-esteem in boys.
An overall stability in physical self-esteem was found. However the impact of a sub-domain upon physical self-esteem vary during adolescence and early adulthood. Such information may be useful when creating physical activity programs that support and develop physical self-esteem.
一个一直与青少年身体活动相关的变量是感知到的活动能力。感知到的身体（或运动）能力被认为是身体自尊或自我价值的一个子领域（即一个人对其自我描述中好的和有价值的东西的评价）。
本研究旨在通过一项从青春期到成年早期的纵向设计，描述身体自尊、身体活动和体重指数的水平及其相互关系。
在平均年龄12.7岁、15.7岁、17.7岁和22.7岁时，我们对39名（22名男孩）瑞典青少年的身体自尊进行了测量。还测量了连续四个上学日的身体活动（每天步数）、身高和体重。
在男孩和女孩中，任何身体自尊变量在四个时间点之间均未观察到显著差异。总体而言，所有身体自我变量随时间呈现非线性轨迹，总体趋势是在较年轻时增加，在较年长时下降。在12岁和15岁时，男孩和女孩的身体状况和体力以及身体吸引力和体力分别与身体自尊的相关性最强。在17岁和22岁时，运动能力与女孩的自尊相关性最强，而身体吸引力和体力与男孩的自尊相关性最强。
发现身体自尊总体稳定。然而，在青春期和成年早期，一个子领域对身体自尊的影响有所不同。在制定支持和发展身体自尊的体育活动计划时，此类信息可能会有所帮助。
