Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
Psychol Health Med. 2012;17(6):636-51. doi: 10.1080/13548506.2011.652640. Epub 2012 Feb 7.
Physical activity is associated with many benefits, but persons with multiple sclerosis (MS) are less physically active than the general population. There is a critical need for research on methods of increasing and sustaining the physical activity levels of this population. This randomized controlled trial examined the efficacy of an Internet-delivered and theory-based behavioral intervention that was supplemented with video coaching for increasing and sustaining physical activity over time in persons with MS. Physically inactive, ambulatory persons with MS (N = 45) were randomly assigned to intervention (n = 22) or control (n = 23) conditions and completed a battery of questionnaires before, after, and three months after a 12-week intervention period. Data analyses were conducted in PASW 18.0. Partial eta squared ([Formula: see text]) effect size indicated that there was a large, statistically significant condition-by-time interaction on physical activity ([Formula: see text]). Cohen's d effect sizes indicated that the intervention group had a large increase in physical activity after the 12-week trial (d = .98) that was sustained over a three-month follow-up (d = .79). The current study supports the efficacy of a behavioral intervention for increasing and sustaining physical activity in a sample of persons with MS.
身体活动与许多益处相关，但多发性硬化症（MS）患者的身体活动水平低于一般人群。因此，迫切需要研究增加和维持该人群身体活动水平的方法。本随机对照试验研究了一种基于互联网和理论的行为干预措施的效果，该措施辅以视频指导，以增加和维持 MS 患者随时间推移的身体活动水平。身体不活跃、能走动的 MS 患者（N=45）被随机分配到干预组（n=22）或对照组（n=23），并在 12 周干预期前后和三个月后完成了一系列问卷。数据分析使用 PASW 18.0 进行。偏 eta 平方([Formula: see text])效应大小表明，身体活动方面存在着大的、具有统计学意义的条件-时间交互作用([Formula: see text])。Cohen's d 效应大小表明，干预组在 12 周试验后身体活动有很大的增加（d=0.98），并且在三个月的随访中持续（d=0.79）。本研究支持行为干预在增加和维持 MS 患者身体活动方面的有效性。
