Task Difficulty of Climbing Up and Down a Step Evaluated by Beats Above Baseline Index (BABI).

概要

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Beats Above Baseline Index (BABI) is obtained by the required time for task finish and change in heart rate, and is applied to the evaluation of task difficulty. The purpose of the present study was to examine the test-retest reliability of BABI and the criterion-referenced validity of BABI in relation to oxygen intake. Sixteen healthy adults without leg length inequality performed 30 sets of climbing-ups and-downs of a step at the optimal rate. The steps used were 10, 20, 30, and 40 cm high, and 7 kinds of pairs were prepared. High test-retest reliability of BABI was confirmed, but the criterion-referenced validity of BABI in relation to metabolic equivalents (METs) was not clarified in the present task. Using the multiple comparison test, BABI could be divided into 4 groups according to the task difficulty. Measurement of movement capacity using the 4 tasks, one task from each BABI group, may therefore enable the assessment of exercise efficiency and usefulness of orthoses. The present study confirmed the reliability of BABI in the steady-state task of climbing up and down steps, suggesting an applicability of BABI to various task.
理学療法科学学会の論文