Université Côte-d'Azur, LAMHESS, Nice, France.
Université de Toulon, Unité de Recherche Impact de l'Activité Physique sur la Santé, Toulon, France.
BMC Pulm Med. 2021 Apr 14;21(1):121. doi: 10.1186/s12890-021-01471-0.
People with cystic fibrosis (pwCF) derive several physiological and psychological benefits from regular physical activity (PA), but the practice is lower than recommended. Knowledge about the facilitators of and barriers to PA at the individual level is important to act positively on PA behaviors. This study validated the Cystic Fibrosis Decisional Balance for Physical Activity scale (CF-DB-PA) for adults with CF.
French adults with CF were recruited in several specialist centres in France. The CF-DB-PA scale was validated following a quantitative study protocol comprising four stages: (1) tests of the clarity and relevance of a preliminary 44-item version and reduction analysis, (2) confirmatory factor analysis and tests of dimensionality through equation modelling analysis, (3) tests of reliability with Cronbach alphas for the internal consistency and a test-retest with a 2-to-3 week interval for temporal stability, and 4) tests of construct validity with Spearman correlations to measure the associations between each subscale and the theoretically related constructs (i.e., quality of life, PA and exercise tolerance).
A total of 201 French adults with CF participated in the validation study. The CF-DB-PA comprises 23 items divided into two factors: facilitators of and barriers to PA. Each factor is divided into three subscales: physical, psychological and environmental. The factors (facilitators and barriers) can be used independently or combined as a whole. A general score of decisional balance for PA can also be calculated. The bi-factor model presented satisfactory adjustment indexes: χ (194) = 362.33; p < .001; TLI = .87; CFI = .90; RMSEA = .067. The scale showed satisfactory internal consistency (Cronbach's α = .77). The test-retest reliability was not significant for either subscale, indicating stability over time. The facilitators subscale correlated significantly with the self-reported score of PA (r = .33, p < .01) and quality of life (r = .24, p < .05). The barriers subscale correlated significantly with the self-reported scores of PA (r = - .42, p > .01), quality of life (r = - .44, p < .01), exercise tolerance (r = - .34, p < .01) and spirometry tests (r = - .30, p < .05).
The CF-DB-PA is a reliable and valid questionnaire assessing the decisional balance for PA, the facilitators of and the barriers to PA for adults with CF in French-speaking samples.
囊性纤维化（CF）患者从定期体育活动（PA）中获得了多种生理和心理益处，但实际参与度低于推荐水平。了解个人层面上促进和阻碍 PA 的因素对于积极改善 PA 行为至关重要。本研究旨在验证 CF 决策平衡量表（CF-DB-PA）在 CF 成人中的适用性。
在法国的多个专业中心招募了法语 CF 成人。CF-DB-PA 量表的验证遵循了一个定量研究方案，包括四个阶段：（1）对初步的 44 项版本进行清晰性和相关性测试以及降维分析；（2）通过方程模型分析进行验证性因子分析和维度测试；（3）通过 Cronbach α 进行内部一致性的可靠性测试，以及间隔 2-3 周的重测信度测试；（4）通过 Spearman 相关系数进行结构效度测试，以衡量各分量表与理论相关构念（即生活质量、PA 和运动耐量）之间的关联。
共有 201 名法国 CF 成人参与了验证研究。CF-DB-PA 由 23 个项目组成，分为两个因素：促进和阻碍 PA 的因素。每个因素又分为三个子量表：身体、心理和环境。这些因素（促进因素和阻碍因素）可以独立使用或组合使用。还可以计算 PA 决策平衡的综合得分。双因素模型显示出良好的调整指标：χ（194）=362.33；p<.001；TLI=.87；CFI=.90；RMSEA=.067。该量表具有良好的内部一致性（Cronbach's α=.77）。重测信度对于任何子量表都不显著，表明在时间上具有稳定性。促进因素子量表与自我报告的 PA 得分（r=.33，p<.01）和生活质量（r=.24，p<.05）显著相关。障碍因素子量表与自我报告的 PA 得分（r=−.42，p>.01）、生活质量（r=−.44，p<.01）、运动耐量（r=−.34，p<.01）和肺功能测试（r=−.30，p<.05）显著相关。
CF-DB-PA 是一种可靠且有效的问卷，用于评估法语 CF 成人的 PA 决策平衡、PA 的促进因素和障碍因素。
