期刊
PHYSICAL THERAPY
卷 93, 期 8, 页码 1037-1048出版社
OXFORD UNIV PRESS INC
DOI: 10.2522/ptj.20120479
关键词
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资金
- National Multiple Sclerosis Society [RG 3926A2/1]
Background. Physical activity is beneficial for people with multiple sclerosis (MS), but this population is largely inactive. There is minimal information on change in physical activity and its correlates for informing the development of behavioral interventions. Objective. This study examined change in physical activity and its symptomatic, social-cognitive, and ambulatory or disability correlates over a 2.5-year period of time in people with relapsing-remitting multiple sclerosis. Methods. On 6 occasions, each separated by 6 months, people (N=269) with relapsing-remitting multiple sclerosis completed assessments of symptoms, self-efficacy, walking impairment, disability, and physical activity. The participants wore an accelerometer for 7 days. The change in study variables over 6 time points was examined with unconditional latent growth curve modeling. The association among changes in study variables over time was examined using conditional latent growth curve modeling, and the associations were expressed as standardized path coefficients (beta). Results. There were significant linear changes in self-reported and objectively measured physical activity, self-efficacy, walking impairment, and disability over the 2.5-year period; there were no changes in fatigue, depression, and pain. The changes in self-reported and objective physical activity were associated with change in self-efficacy (beta=.49 and beta=.61, respectively), after controlling for other variables and confounders. Limitations. The primary limitations of the study were the generalizability of results among those with progressive multiple sclerosis and inclusion of a single variable from social-cognitive theory. Conclusions. Researchers should consider designing interventions that target self-efficacy for the promotion and maintenance of physical activity in this population.
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