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  • Title: One-leg cycling versus arm cranking: which is most appropriate for physical conditioning after knee surgery?
    Author: Olivier N, Legrand R, Rogez J, Berthoin S, Prieur F, Weissland T.
    Journal: Arch Phys Med Rehabil; 2008 Mar; 89(3):508-12. PubMed ID: 18295630.
    Abstract:
    OBJECTIVE: To compare the cardiorespiratory responses, blood lactate concentration and perceived exertion between 1-leg cycling and arm cranking. DESIGN: Comparison of exercise modalities. SETTING: Hospital. PARTICIPANTS: Fourteen men who had undergone knee surgery were evaluated during rehabilitation. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Each patient performed 2 maximal graded tests: 1-leg cycling and arm cranking exercise, with a 7-day interval. Respiratory gas exchange, heart rate, blood lactate concentration, and the ratings of perceived exertion (RPE) were measured. RESULTS: Peak power output, peak minute ventilation, peak oxygen uptake (Vo(2)peak), and peak heart rate did not differ significantly between 1-leg cycling and arm cranking. The first and second ventilatory thresholds occurred at above 40% and 72% of Vo(2)peak, respectively, in both tests. The maximal lactate concentrations and the RPE values were significantly higher during arm cranking (+10%, +12%, respectively, P<.05) compared with corresponding 1-leg cycling values. CONCLUSIONS: The maximal cardiorespiratory values were not different between arm cranking and 1-leg cycling. However, the RPE and blood lactate concentration were lower when the exercise was performed with the lower limb. Thus 1-leg cycling may be more easily tolerated than arm cranking by patients participating in aerobic conditioning after knee surgery.
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