The one repetition maximum test and the sit-to-stand test in the assessment of a specific pulmonary rehabilitation program on peripheral muscle strength in COPD patients.

They showed a good test-retest intraclass correlation and a highly significant correlation between chair-stand and 1-RM leg-press performance. 14 In addition, Takai et al evaluated 57 elderly healthy subjects with a mean age of 64 years and showed that a combined power index of a ten repeated STST, including time taken for the test, body mass and leg length, can assess the force-generating capacity of knee extensors. 31 However, to the best of our knowledge, no previous studies have so far been addressed to compare STST to 1-RM in COPD patients.

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