High-Speed Cycling Intervention Improves Rate-Dependent Mobility in Older Adults.

PURPOSE: The aim was to determine the feasibility of a six-week speed-based exercise program that could be used to initiate new exercise behaviors and improve rapid movement in older adults approaching frailty. METHODS: The intervention group included 14 older adults (3 males, 11 females, mean (SD) age: 70 (7.6) years, height: 1.6 (.11) m, mass: 76.8 (12.0) kg, BMI: 27.7(4.7)). The control group included 12 older adults (6 males, 6 females, mean (SD) age: 69.2 (6.9) years, height: 1.7 (.09) m, mass: 78.2 (10.9) kg, BMI: 25.3 (2.7)). Subjects included active older adults, including regular exercisers, but none were engaged in sports or exercises with an emphasis on speed (e.g. cycling spin classes or tennis). Stationary recumbent cycling was selected to minimize fall risk and low pedaling resistance reduced musculoskeletal and cardiovascular load. Two weekly 30-minute exercise sessions consisted of interval training in which subjects pedaled at preferred cadence and performed ten 20-s fast cadence intervals separated by 40-s of active recovery at preferred cadence. RESULTS: Significant Group by Time interactions (p<.05 supported a improvement in the timed up and go test rapid isometric knee extension contractions exercise group but not controls. central neural adaptations are suggested because this lower extremity program also elicited significant improvements untrained upper extremities of rfd-sf peg p conclusion: these results demonstrate that relatively low dose speed-based can improve neuromuscular function tests mobility older adults. such serves as sensible precursor to subsequent more vigorous training or an adjunct where velocity emphasis is lacking. american college sports medicine>

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