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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