Dai Jun, Chen Han, Sun Haichun
Shanghai University of Sport, School of Physical Education, Shanghai, 200438, China.
Valdosta State University, Department of Teacher Education KSPE, Valdosta, GA, 31698, USA.
J Exerc Sci Fit. 2024 Oct;22(4):322-328. doi: 10.1016/j.jesf.2024.05.002. Epub 2024 May 30.
The perceived benefits and barriers to physical activity play crucial roles in determining daily physical activity levels. However, previous studies have employed tools lacking adequate validation, leading to inconsistent conclusions about the impact of these two factors. Therefore, this national, population-based study was conducted to assess the psychometric properties, measurement invariance, and predictive validity of the Chinese versions of the perceived benefits (C-PBEPA) and barriers to physical activity (C-PBAPA) scales.
The final sample (N = 2942, 49.3 % for boys) was randomly split into two subsamples. The first subsample was used for exploratory factor analysis and the second subsample was used for confirmatory factor analysis. Measurement invariance across gender and age groups were examined. Structural equation models were developed to examine the predictive validity of the revised C-PBEPA and C-PBAPA on moderate to vigorous PA.
The results showed that both scales were unidimensional, had excellent model fit (e.g., /df < 3, CFI >0.9, RMSEA <0.06) and demonstrated convergent validity. Findings also revealed lack of scalar invariance for C-PBAPA between preadolescents and adolescents' groups (ΔCFI >0.01) and supported the predictive validity of both scales ( < 0.001).
The study demonstrated that the revised C-PBEPA and C-PBAPA are valid scales for measuring Chinese adolescents' perceived benefits and barriers to PA.
对体育活动的感知益处和障碍在决定日常体育活动水平方面起着关键作用。然而，以往的研究使用的工具缺乏充分的验证，导致关于这两个因素影响的结论不一致。因此，本项基于全国人口的研究旨在评估中文版感知益处（C-PBEPA）和体育活动障碍（C-PBAPA）量表的心理测量特性、测量不变性和预测效度。
最终样本（N = 2942，男孩占49.3%）被随机分为两个子样本。第一个子样本用于探索性因素分析，第二个子样本用于验证性因素分析。检验了性别和年龄组之间的测量不变性。建立结构方程模型以检验修订后的C-PBEPA和C-PBAPA对中度至剧烈体育活动的预测效度。
结果表明，两个量表均为单维量表，具有良好的模型拟合度（例如，χ²/df < 3，CFI > 0.9，RMSEA < 0.06）并显示出收敛效度。研究结果还显示，C-PBAPA在青春期前和青少年组之间缺乏标量不变性（ΔCFI > 0.01），并支持两个量表的预测效度（p < 0.001）。
该研究表明，修订后的C-PBEPA和C-PBAPA是测量中国青少年对体育活动的感知益处和障碍的有效量表。
