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Correlations of the 6-minute walk distance and ESMCSA with the daily step count. The daily step counts were significantly correlated with the 6-minute walk distance (r=0.44, p<0.001) (A) and ESMCSA (r=0.41, p=0.002) (B) but not with the PMV (r=0.12, p=0.368) (C) or skeletal muscle index (r=0.21, p=0.128) (D). ESMCSA: cross-sectional area of the erector spinae muscles at the level of the 12th thoracic vertebra, PMV: psoas major muscle volume
