Publication:

青少年肥胖、身體活動與社會體型焦慮之研究

目的：本研究目的在了解青少年社會體型焦慮與運動行為之關係，並探討在控制人口統計、心理及行為變項後，兩者關係是否維持不變。 方法: 樣本來自臺灣18個中等學校，然後從每個學校選取8個班級。總樣本數為4230人，年齡12-19歲 (2223男生；2007女生)。參與者填寫人口統計變項 (年齡、性別、社經地位、身高與體重)、運動、體重控制、抽菸喝酒等行為變項、及心理變項 (社會體型焦慮、自尊、外型描繪評分尺度與被取笑經驗)。以階層迴歸分析運動行為及相關變項的預測情形。 結果：研究結果顯示，運動行為為社會體型焦慮的顯著預測因子，可解釋2.4%的變異量 (p<.001)。當人口統計變項加入迴歸分析，總變異量增加14.7%。運動行為仍為社會體型焦慮的顯著預測因子 (p<.001)。最後，將行為變項及心理變項加入迴歸分析，對社會體型焦慮的預測力提高20.1%。在最後模式中，除社經地位變項，其他所有變項均為社會體型焦慮的顯著預測因子，共可解釋37.2%的變異量。在控制人口統計、心理及行為變項後，社會體型焦慮與運動行為始終維持顯著的關係 (p=.002)。 結論： 本研究納入許多社會體型焦慮與運動行為的相關變項，並進一步探討兩者間的關係。研究證實運動行為在控制人口統計、心理及行為變項後，對社會體型焦慮仍具顯著預測力。

Aims: This study was designed to investigate the link between exercise and social physique anxiety (SPA) among adolescents and to understand the SPA-exercise relationship for controlling demographic, psychological and behavioral variables. Methods: Participants were recruited from 18 high schools in Taiwan. Eight classes in each school were then selected by convenience. A total sample of 4230 adolescents aged 12 to 19 resulted (2223 boys and 2007 girls). Participants completed measures of demographic variables (age, gender, social economic status (SES), weight and height), exercise, weight loss, smoking, drinking behaviors, and psychological variables (SPA scale, self-esteem scale, contour drawing rating scale, and teasing experience). A three-step forced entry multiple regression analysis was performed to determine how much of the variance in SPA was explained by exercise and other variables. Results: Examination of the regression coefficient showed that exercise was a significant negative predictor of SPA, accounting for 2.4% of the variance in SPA (p<.001). Demographic variables were entered for the next step, adding 14.7% of the variance. Exercise was still related to SPA significantly (p<.001). When behavioral and psychological variables were added to the model, the variance increased 20.1%. The final model revealed that all variables, except SES, were significant predictors, explaining 37.2% of the variance in SPA. The exercise-SPA relationship remained statistically significant even after multivariate adjustment (p=.002). Conclusion: This study further explored the exercise-SPA relationship with a broad range of variables. Exercise accounts for a significant amount of unique variance in the presence of demographic, psychological and behavioral variables.