Abstract
An arm ergometer analog of the Canadian Aerobic Fitness Test (CAFT) has been proposed for subjects with impairments of mobility (Longmuir & Shephard, 1995). Because of muscle weakness or spasm, only 63% of the adults concerned could maintain the required cadence in the original test version. Thus, in the present study it was hypothesized that a reduced crank loading would yield a higher success rate. In a sample of 35 adults with mobility impairment, 82% were able to complete at least one stage of the modified test. Difficulty was encountered mainly by persons with cerebral palsy or multiple sclerosis. The revised protocol had a high (r = .97) 1-week test/retest reliability, with no test/retest bias except that subjects with brain lesions scored somewhat higher at their second assessment. A scaled prediction of peak oxygen intake using the standard CAFT equation agreed closely with direct arm ergometer determinations of it. The modified test showed a mean discrepancy ±SD of 0.1 ± 4.8 ml/[kg · min]. Further validation is needed, but the current analog of the standard CAFT appears to be useful for many with mobility impairments.
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