TY - JOUR
T1 - Muscle impairments and behavioral factors mediate functional limitations and disability following stroke
AU - LeBrasseur, Nathan K.
AU - Sayers, Stephen P.
AU - Ouellette, Michelle M.
AU - Fielding, Roger A.
PY - 2006/10
Y1 - 2006/10
N2 - Background and Purpose. Stroke remains the leading cause of disability in the United States. The purposes of this study were to examine whether quantitative measures of muscle strength and power in the involved lower extremity predict functional limitations and to evaluate the contributions of behavioral factors to mediating disability and quality of life in people who have survived a stroke. Subjects and Methods. A cross-sectional study design was used, and measurements of muscle impairment, lower-body function, disability, quality of life, and behavioral factors were obtained for 31 community-dwelling volunteers who had experienced a single ischemic stroke in the past 6 to 24 months. Results. Stepwise regression models including impairment and behavioral measures were strong predictors of function, disability, and quality of life. Involved-extremity muscle strength and power and self-efficacy were independently associated with function, whereas depression and self-efficacy were strong predictors of disability and quality of life. Discussion and Conclusion. The findings warrant future studies to determine whether interventions that address muscle strength and power, depressive symptoms, and low self-efficacy effectively improve function, reduce disability, and enhance quality of life in people who have survived a stroke.
AB - Background and Purpose. Stroke remains the leading cause of disability in the United States. The purposes of this study were to examine whether quantitative measures of muscle strength and power in the involved lower extremity predict functional limitations and to evaluate the contributions of behavioral factors to mediating disability and quality of life in people who have survived a stroke. Subjects and Methods. A cross-sectional study design was used, and measurements of muscle impairment, lower-body function, disability, quality of life, and behavioral factors were obtained for 31 community-dwelling volunteers who had experienced a single ischemic stroke in the past 6 to 24 months. Results. Stepwise regression models including impairment and behavioral measures were strong predictors of function, disability, and quality of life. Involved-extremity muscle strength and power and self-efficacy were independently associated with function, whereas depression and self-efficacy were strong predictors of disability and quality of life. Discussion and Conclusion. The findings warrant future studies to determine whether interventions that address muscle strength and power, depressive symptoms, and low self-efficacy effectively improve function, reduce disability, and enhance quality of life in people who have survived a stroke.
KW - Cerebrovascular accident
KW - Power
KW - Quality of life
KW - Self-efficacy
KW - Strength
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U2 - 10.2522/ptj.20050162
DO - 10.2522/ptj.20050162
M3 - Article
C2 - 17012638
AN - SCOPUS:33749346091
SN - 0031-9023
VL - 86
SP - 1342
EP - 1350
JO - Physical Therapy
JF - Physical Therapy
IS - 10
ER -