Comparison of Effect of Aerobic Cycle Training and Progressive Resistance Training on Walking Ability After Stroke: A Randomized Sham Exercise–Controlled Study
Version of Record online: 18 APR 2008
© 2008, Copyright the Authors. Journal compilation © 2008, The American Geriatrics Society
Journal of the American Geriatrics Society
Volume 56, Issue 6, pages 976–985, June 2008
How to Cite
Lee, M.-J., Kilbreath, S. L., Singh, M. F., Zeman, B., Lord, S. R., Raymond, J. and Davis, G. M. (2008), Comparison of Effect of Aerobic Cycle Training and Progressive Resistance Training on Walking Ability After Stroke: A Randomized Sham Exercise–Controlled Study. Journal of the American Geriatrics Society, 56: 976–985. doi: 10.1111/j.1532-5415.2008.01707.x
- Issue online: 18 APR 2008
- Version of Record online: 18 APR 2008
- cerebrovascular disease;
- exercise training;
- controlled trial;
OBJECTIVES: To determine whether changes in strength or cardiorespiratory fitness after exercise training improve walking ability in individuals who have had a stroke.
DESIGN: A sham exercise-controlled, randomized two-by-two factorial design, in which the two factors investigated were cycle training (AEROBIC) and resistance training (STRENGTH).
SETTING: University exercise laboratory.
PARTICIPANTS: Fifty-two individuals with a history of stroke (aged 63±9; time since stroke, 57±54 months).
INTERVENTION: Participants undertook 30 exercise sessions over 10 to 12 weeks. Depending on group allocation, individuals underwent aerobic cycling plus sham progressive resistance training (PRT) (n=13), sham cycling plus PRT (n=13), aerobic cycling plus PRT (n=14), or sham cycling plus sham PRT (n=12).
MEASUREMENTS: Primary outcomes were 6-minute walk distance, habitual and fast gait velocities, and stair climbing power. Secondary outcomes included measures of cardiorespiratory fitness; muscle strength, power, and endurance; and psychosocial attributes.
RESULTS: Neither AEROBIC nor STRENGTH improved walking distance or gait velocity significantly more than sham exercise, although STRENGTH significantly improved participants' stair climbing power by 17% (P=.009), as well as their muscle strength, power, and endurance; cycling peak power output; and self-efficacy. Conversely, AEROBIC improved indicators of cardiorespiratory fitness only. Cycling plus PRT produced larger effects than either single modality for mobility and impairment outcomes.
CONCLUSION: Single-modality exercises targeted at existing impairments do not optimally address the functional deficits of walking but do ameliorate the underlying impairments. The underlying cardiovascular and musculoskeletal impairments are significantly modifiable years after stroke with targeted robust exercise.