The Use of the Incremental Shuttle Walk Test to Identify Instrumental Activity Daily Living Disability and to Predict Peak Oxygen Consumption in Older Adults: A Methodological Study

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Abstract

Aerobic capacity is essential for physical function. The aims of this study were to identify the peak oxygen consumption (

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O2 peak) and the incremental shuttle walk test (ISWT) distance associated with disability and to develop an equation to predict

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O2 peak, based on the ISWT distance. Fifteen disabled and 13 nondisabled older adults performed the ISWT using a portable telemetric gas analyzer. The

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O2 peak and the distance associated with disability were 15.8 mL/kg/min or less and 230 m or less, respectively. The coefficient of determination from the predictive model was 0.54. The ISWT might be considered to assess aerobic capacity in older adults.

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