Department of Clinical Therapies, Faculty of Education and Health Sciences, University of Limerick.
Department of Physical Therapy, University of Alabama at Birmingham.
Rehabil Psychol. 2018 Feb;63(1):104-110. doi: 10.1037/rep0000190.
To investigate the bivariate correlations between objective physical activity (PA), self-efficacy, and a range of multiple sclerosis (MS) symptom measures. Also, to determine whether any MS symptom measures moderate the relationship between self-efficacy and PA.
Baseline analysis from a randomized control trial exercise plus a behavior change intervention was used. Fifty-nine physically inactive people with a definite diagnosis of MS were included. Participants were asked to record 7-day objective PA with the SenseWear Armband. Additionally, measures of self-efficacy (Exercise Self-Efficacy Scale), walking endurance (6-min walk test), impact of walking (12-Item MS Walking Scale [MSWS-12]), anxiety and depression (Hospital Anxiety and Depression Scale [HADS]) and fatigue (Modified Fatigue Impact Scale) were assessed before intervention. Pearson's correlations and moderation analysis were conducted.
Self-efficacy was positively associated with PA (r = .30, p < .05). HADS-Depression (r = -.25, p < .05) and MSWS-12 (r = -.31, p < .01) demonstrated statistically significant negative correlations with self-efficacy but not with PA. Moderation analysis illustrated a significant interaction between anxiety and self-efficacy (r = .39, p < .03) with an R2 value of .15. The interaction was significant at lower values of anxiety, suggesting that the relationship between self-efficacy and PA is stronger when levels of anxiety are lower.
This article confirms the potential role of MS symptoms, in particular anxiety, in explaining PA behavior in an inactive sample of persons with multiple sclerosis (pwMS). Further exploration is warranted, and future PA interventions should acknowledge the potential interplay of psychosocial constructs such as self-efficacy and anxiety in changing PA behavior among pwMS. (PsycINFO Database Record
研究客观身体活动（PA）、自我效能感与一系列多发性硬化症（MS）症状测量指标之间的双变量相关性。并确定是否有任何 MS 症状指标会影响自我效能感与 PA 之间的关系。
使用随机对照试验的基线分析，该试验包含运动加行为改变干预。共纳入 59 名身体活动不足且确诊为 MS 的患者。参与者被要求使用 SenseWear 臂带记录 7 天的客观 PA。此外，还评估了自我效能感（运动自我效能感量表）、行走耐力（6 分钟步行测试）、行走影响（12 项 MS 行走量表 [MSWS-12]）、焦虑和抑郁（医院焦虑和抑郁量表 [HADS]）以及疲劳（修正疲劳影响量表）。进行了 Pearson 相关分析和调节分析。
自我效能感与 PA 呈正相关（r =.30，p <.05）。HADS 抑郁（r = -.25，p <.05）和 MSWS-12（r = -.31，p <.01）与自我效能感呈显著负相关，但与 PA 无关。调节分析表明，焦虑与自我效能感之间存在显著的交互作用（r =.39，p <.03），R2 值为.15。交互作用在较低的焦虑水平下显著，表明当焦虑水平较低时，自我效能感与 PA 之间的关系更强。
本文证实了 MS 症状，特别是焦虑，在解释活跃性低的多发性硬化症患者的 PA 行为方面的潜在作用。需要进一步探讨，未来的 PA 干预措施应该认识到自我效能感和焦虑等心理社会构念在改变 MS 患者 PA 行为方面的潜在相互作用。
