Haugen Tommy, Ommundsen Yngvar, Seiler Stephen
Dept. of Public Health, Sport, and Nutrition, University of Agder, Kristiansand, Norway.
Pediatr Exerc Sci. 2013 Feb;25(1):138-53. doi: 10.1123/pes.25.1.138.
The aim of this study was to investigate if physical fitness (strength/power, endurance, flexibility and coordination) mediates the cross-sectional relationship between physical activity and physical self-perception (athletic competence and physical appearance) in a sample of 15-year old adolescents. We wanted to investigate the relative strength of each indirect effect. The present data are taken from two waves of a larger data collection for the project "Youth in Balance", and was collected in the autumn of 2005 (N = 1207) and 2008 (N = 632). A total of 1839 students (889 girls and 950 boys) from 12 schools in Kristiansand took part. A bias-corrected bootstrapping technique was used to examine indirect effects. Results revealed that cardiovascular endurance, lower-body strength/power, and upper-body strength stood out as unique mediators in the relationship between physical activity and athletic competence in both genders. Furthermore, there was an indirect effect of physical activity on physical appearance through physical strength/power and flexibility in males. No indirect effects of physical activity on physical appearance through actual physical fitness indices were detected in females.
本研究的目的是调查在15岁青少年样本中，身体素质（力量/功率、耐力、柔韧性和协调性）是否介导了体育活动与身体自我认知（运动能力和外貌）之间的横断面关系。我们想研究每个间接效应的相对强度。目前的数据来自“平衡中的青少年”项目的两轮较大规模数据收集，分别于2005年秋季（N = 1207）和2008年秋季（N = 632）收集。来自克里斯蒂安桑12所学校的1839名学生（889名女生和950名男生）参与其中。采用偏差校正的自助法来检验间接效应。结果显示，心血管耐力、下肢力量/功率和上肢力量是男女体育活动与运动能力关系中独特的中介因素。此外，男性的体育活动通过身体力量/功率和柔韧性对外貌有间接影响。在女性中未检测到体育活动通过实际身体素质指标对外貌有间接影响。
