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Table 2 Muscle strength and physical functioning of critical illness survivors at 3 months after hospital discharge measured using hand-held dynamometry and the 6-min walk test

From: Assessment and predictors of physical functioning post-hospital discharge in survivors of critical illness

Variable (n = 56) Measurement (median, IQR) % predicted (median, IQR) % of patients < 80% predicted strength Correlation with the 6MWT (R2, p value)
Maximum muscle strength (kg)a
 Grip 20.4 (9.1, 30.6) 61 % (25, 108) 60 0.28 (<0.001)
 Triceps 12.3 (8.7, 16.7) 71 % (45, 126) 52 0.31 (<0.001)
 Biceps 14.5 (11.7, 19.0) 72 % (45, 126) 52 0.28 (<0.001)
 Hamstrings 13.2 (10.3, 17.6) 77 % (47, 114) 53 0.30 (<0.001)
 Quadriceps 20.3 (16.4, 25.6) 59 % (35, 88) 69 0.14 (0.013)
 Ankle dorsiflexors 13.7 (10.6, 17.2) 62 % (42, 92) 57 0.13 (<0.001)
  1. 6MWT 6-min walk test
  2. aStrength results reported as the maximum force generated on the dominant body side