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J Neurosci Nurs. 2014 Jun;46(3):171-9. doi: 10.1097/JNN.0000000000000050.
Research suggests that persons with multiple sclerosis (MS) are much less physically active than the general population and that increased physical activity in persons with MS is associated with numerous benefits such as improvements in fatigue, mobility, and quality of life (). Potentially modifiable theory-based determinants of physical activity behavior need to be identified so that researchers may study their effectiveness in randomized clinical trials and clinicians may integrate them into practice to promote physical activity in this population. The purpose of this study was to explore the multidimensional (physical, social, and self-evaluative) outcome expectations for physical activity among persons with longstanding MS. A sample of 369 participants diagnosed with MS for more than 15 years completed surveys to measure multidimensional outcome expectations for exercise, MS functional limitations, and physical activity using two different instruments: one measuring physical activity engagement and the other measuring physical activity capability. Results indicated that MS functional limitation was the strongest predictor of both physical activity engagement and physical activity capability. Physical and social outcome expectations contributed to the model explaining 12% of the variation in physical activity engagement, whereas none of the outcome expectancy dimensions (physical, social, or self-evaluative) contributed to the model explaining variation in physical activity capability. Although analyses of cross-sectional data do not infer causation, these findings suggest that positive physical and social outcome expectations for physical activity are associated with engagement in physical activity as well as being potential sources of motivation for increasing physical activity behavior in individuals living with longstanding MS.
研究表明，多发性硬化症 (MS) 患者的身体活动量远低于一般人群，而 MS 患者增加身体活动与许多益处相关，如疲劳、移动能力和生活质量的改善 (1)。需要确定潜在可改变的基于理论的身体活动行为决定因素，以便研究人员可以在随机临床试验中研究它们的有效性，临床医生可以将它们整合到实践中，以促进该人群的身体活动。本研究的目的是探讨长期患有 MS 的人群对身体活动的多维（身体、社会和自我评估）预期结果。一个由 369 名被诊断患有 MS 超过 15 年的参与者组成的样本使用两种不同的仪器完成了测量多维锻炼结果预期、MS 功能限制和身体活动的调查：一种测量身体活动参与度，另一种测量身体活动能力。结果表明，MS 功能限制是身体活动参与度和身体活动能力的最强预测因素。身体和社会结果预期对模型解释身体活动参与度的变化有贡献，占 12%，而身体活动能力模型解释变化的结果预期维度（身体、社会或自我评估）均无贡献。虽然横断面数据分析不能推断因果关系，但这些发现表明，对身体活动的积极身体和社会结果预期与身体活动的参与度有关，并且是提高长期患有 MS 的个体身体活动行为的潜在动机来源。
