体重状况与青春期启动时间和运动能力中介的自我形象之间的关系：一项对台湾青少年的队列研究。
Relationship Between Weight Status and Self-Image Mediated by Pubertal Timing and Athletic Competence: A Cohort Study With Taiwanese Adolescents.
机构信息
School of Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
Department of Business Administration, National Cheng Kung University, Tainan, Taiwan.
出版信息
Front Public Health. 2022 Jul 22;10:890751. doi: 10.3389/fpubh.2022.890751. eCollection 2022.
BACKGROUND
Self-image reflects overall self-acceptance in developing adolescents. Using a representative cohort of Taiwanese youth, this study aims to explore the relationship between weight status, pubertal timing, athletic competence, and adolescent self-image.
METHODS
Data come from the Taiwan Youth Project that comprised a longitudinal cohort of adolescents ( = 2690, 51% males, M = 13.3 ± 0.5 years) surveyed annually from seventh grade. Self-image was measured by perceived satisfaction with appearance and physique. Weight status was proxied by self-reported body mass index (BMI; kg/m). Pubertal timing was defined using the Pubertal Developmental Scale, which mainly measured physical changes in puberty. Athletic competence was assessed by experiences with participation in competitive sports and self-perceived talent for sports. Linear regression analysis was applied to test for an association between BMI and self-image. In order to test for mediating roles of pubertal timing and athletic competence, Hayes' PROCESS macro on SPSS was conducted applying 5,000 bootstrap resamples with 95% confidence intervals of the indirect effect.
RESULTS
BMI was inversely associated with self-image in both males (β = -0.074, [-0.095, -0.053]) and females (β = -0.095, [-0.122, -0.069]). The boot-strapped 95% confidence intervals indicated statistically significant mediating effects of pubertal timing (β = -0.008, [-0.015, -0.001]) and athletic competence (β = -0.006, [-0.011, -0.002]) in the link between BMI and self-image in females, whilst only athletic competence mediated this association (β = -0.006, [-0.009, -0.002]) in males. Moreover, BMI at baseline were also associated with long-term self-image in males (β = -0.037, [-0.057, -0.017]) and females (β = 0.132, [0.073, 0.190]).
CONCLUSIONS
Understanding the mediating factors may help enhance adolescents' self-image by providing guidance on healthy weight and physical activity behaviors according to different stages of pubertal progression.
背景
自我形象反映了青少年整体的自我接纳程度。本研究使用具有代表性的台湾青少年队列，旨在探讨体重状况、青春期发育时间、运动能力与青少年自我形象之间的关系。
方法
数据来自台湾青少年项目，该项目包含一个纵向青少年队列（n=2690，男生占 51%，M=13.3±0.5 岁），每年从七年级开始进行调查。自我形象通过对外观和体型的满意度来衡量。体重状况通过自我报告的体重指数（BMI；kg/m）来表示。青春期发育时间使用青春期发育量表来定义，该量表主要测量青春期的身体变化。运动能力通过参与竞技体育的经历和自我感知的运动天赋来评估。采用线性回归分析来检验 BMI 与自我形象之间的关系。为了检验青春期发育时间和运动能力的中介作用，采用 SPSS 的 Hayes' PROCESS 宏程序，应用 5000 次 bootstrap 重采样和 95%置信区间的间接效应。
结果
在男性（β=-0.074，[-0.095，-0.053]）和女性（β=-0.095，[-0.122，-0.069]）中，BMI 与自我形象呈负相关。bootstrap 95%置信区间表明，在女性中，青春期发育时间（β=-0.008，[-0.015，-0.001]）和运动能力（β=-0.006，[-0.011，-0.002]）对 BMI 与自我形象之间的关系具有统计学显著的中介作用，而在男性中，只有运动能力（β=-0.006，[-0.009，-0.002]）起中介作用。此外，BMI 基线水平也与男性（β=-0.037，[-0.057，-0.017]）和女性（β=0.132，[0.073，0.190]）的长期自我形象相关。
结论
了解中介因素可以帮助根据青春期发育的不同阶段，通过提供关于健康体重和身体活动行为的指导，来提高青少年的自我形象。
Zotero 插件