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Validity Of A Wheelchair Perceived Exertion Scale (Wheel Scale) For Arm Ergometry Exercise In People
Summary .— This study assessed the concurrent and construct validity of the Borg 6–20 Scale and WHEEL Scale during arm ergometry exercise stress testing in ( n = 24) adolescents and adults with spina bifi da. Signifi cant, moderate, positive correlations were observed between power output and relative heart rate and power output to relative VO 2 peak. Further, a moderate, signifi cant correlation between physiologic criterion variables and the rating of perceived exertion derived from the Borg Scale and the WHEEL Scale was found. Concurrent validity was supported by the following fi ndings: (1) relative heart rate was signifi cantly correlated with the Borg (Kendall's τ = .41) and WHEEL Scales (τ = .44), and relative VO 2 was signifi cantly correlated with the Borg (τ = .46) and WHEEL Scales (τ = .47); (2) content
validity was supported by the fi nding that the Borg and WHEEL Scales shared signifi cant variance (τ = .70), demonstrating internal consistency. The WHEEL Scale shows strong potential for use in this cohort subsequent to further testing and validation.
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