Allison K R, Dwyer J J, Makin S
Department of Public Health Sciences, Faculty of Medicine, University of Toronto, Ontario, Canada.
Prev Med. 1999 Jun;28(6):608-15. doi: 10.1006/pmed.1999.0489.
Perceived barriers to physical activity, the factor structure of perceived barriers, and the relationship between perceived barriers and participation in vigorous physical activity were examined.
A two-stage cluster sample of high school students (N = 1,041) in a large Metropolitan Toronto school district was used. Students completed a questionnaire (response rate 81.4%) dealing with participation in physical activity in three settings. Factor analysis was used to examine the dimensionality of perceived barriers. Multiple regression analysis was then used to examine the relationship between perceived barriers and participation.
Time constraints due to school work, other interests, and family activities were three of the four barriers considered most important. Females cited consistently higher levels of perceived barriers than males. Two empirically distinct and theoretically meaningful factors emerged from the analysis--perceived internal barriers and perceived external barriers. Perceived internal barriers were predictive of physical activity in overall activity and outside of school activity. Perceived external barriers were predictive of overall physical activity and other school activity, but in the direction opposite to that hypothesized.
It was concluded that perceived barriers may be predictive of physical activity participation among high school students only under specific conditions.
研究了对体育活动的感知障碍、感知障碍的因素结构以及感知障碍与参与剧烈体育活动之间的关系。
采用多伦多一个大型学区的高中生两阶段整群样本（N = 1041）。学生们完成了一份问卷（回复率81.4%），该问卷涉及在三种环境下参与体育活动的情况。使用因素分析来检验感知障碍的维度。然后使用多元回归分析来检验感知障碍与参与之间的关系。
学业、其他兴趣和家庭活动导致的时间限制是被认为最重要的四个障碍中的三个。女性报告的感知障碍水平始终高于男性。分析得出了两个在经验上不同且在理论上有意义的因素——感知到的内部障碍和感知到的外部障碍。感知到的内部障碍可预测总体活动和校外活动中的体育活动。感知到的外部障碍可预测总体体育活动和其他学校活动，但方向与假设相反。
得出的结论是，只有在特定条件下，感知障碍才可能预测高中生参与体育活动的情况。
