Robbins Lorraine B, Wu Tsu-Yin, Sikorskii Alla, Morley Blair
Michigan State University College of Nursing, East Lansing, MI 48824-1317, USA.
J Nurs Meas. 2008;16(2):98-112. doi: 10.1891/1061-3749.16.2.98.
The purpose of this study was to psychometrically test the Adolescent Physical Activity Perceived Benefits and Barriers Scales developed for middle-school-age youth. A total of 206 racially diverse 6th, 7th, and 8th graders completed questionnaires at two time points (2 weeks apart). For the 10-item Perceived Benefits Scale and the 9-item Perceived Barriers Scale, test-retest reliability (r = .70; r = .71, respectively) and internal consistency (Cronbach's alpha was .80 and .79, respectively, at time 1) were supported. Principal components analysis with Varimax rotation was employed to assess construct validity. A 2-factor solution emerged for each scale as predicted. The relationship between both scale scores and self-reported physical activity provided additional evidence of validity. Both instruments were found to be reliable and valid for measuring the perceived benefits of and barriers to physical activity in middle school youth.
本研究的目的是对为初中年龄段青少年开发的青少年身体活动感知益处与障碍量表进行心理测量测试。共有206名来自不同种族的六年级、七年级和八年级学生在两个时间点（相隔两周）完成了问卷调查。对于10项感知益处量表和9项感知障碍量表，重测信度（分别为r = 0.70；r = 0.71）和内部一致性（在时间1时，Cronbach's α分别为0.80和0.79）得到了支持。采用主成分分析和Varimax旋转来评估结构效度。如预期的那样，每个量表都出现了一个双因素解决方案。两个量表得分与自我报告的身体活动之间的关系提供了额外的效度证据。发现这两种工具对于测量初中青少年身体活动的感知益处和障碍都是可靠且有效的
