Published online before print April 22, 2004, doi: 10.1161/01.STR.0000127785.73065.34
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(Stroke. 2004;35:1404.)
© 2004 American Heart Association, Inc.
Original Contributions |
High-Intensity Resistance Training Improves Muscle Strength, Self-Reported Function, and Disability in Long-Term Stroke Survivors
From the Human Physiology Laboratory (M.M.O., N.K.L., R.A.F.), Department of Health Sciences, Sargent College of Health and Rehabilitation Sciences, Boston University, Boston, Mass; Department of Physical Medicine and Rehabilitation (J.F.B., E.P., J.S., W.R.F.), Harvard Medical School/Spaulding Rehabilitation Hospital, Boston, Mass; Hebrew Rehabilitation Center for Aged (J.F.B.), Boston, Mass.
Correspondence to Roger A. Fielding, PhD, Department of Health Sciences, 4th Floor, Boston University, 635 Commonwealth Avenue, Boston, MA 02215. E-mail fielding{at}bu.edu
Background and Purpose— To evaluate the efficacy of supervised high-intensity progressive resistance training (PRT) on lower extremity strength, function, and disability in older, long-term stroke survivors.
Methods— Forty-two volunteers aged 50 years and above, 6 months to 6 years after a single mild to moderate stroke, were randomized into either a control group of upper extremity stretching or a PRT group that received a 12-week supervised high-intensity resistance training program consisting of bilateral leg press (LP), unilateral paretic and nonparetic knee extension (KE), ankle dorsiflexion (DF), and plantarflexion (PF) exercises. Functional performance was assessed using the 6-minute walk, stair-climb time, repeated chair-rise time, and habitual and maximal gait velocities. Self-reported changes in function and disability were evaluated using the Late Life Function and Disability Instrument (LLFDI).
Results— Single-repetition maximum strength significantly improved in the PRT group for LP (16.2%), paretic KE (31.4%), and nonparetic KE (38.2%) with no change in the control group. Paretic ankle DF (66.7% versus –24.0%), paretic ankle PF (35.5% versus –20.3%), and nonparetic ankle PF (14.7% versus –13.8%) significantly improved in the PRT group compared with the control. The PRT group showed significant improvement in self-reported function and disability with no change in the control. There was no significant difference between groups for any performance-based measure of function.
Conclusions— High-intensity PRT improves both paretic and nonparetic lower extremity strength after stroke, and results in reductions in functional limitations and disability.
Key Words: exercise • cerebrovascular accident • rehabilitation • recovery of function
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