Test-Retest Reliability, Validity, and Minimal Detectable Change of the Measurement of Lower Limb Muscular Strength with Handheld Dynamometry in Patients Undergoing Hemodialysis
Table 2
Test-retest: reliability outcomes.
Muscle group
Test: mean (SD) median (min-max)
Retest: mean (SD) median (min-max)
ICC (95% CI)
value
Quadriceps R (Newton)
84.6 (33.4) 79.2 (32.1–189.2)
79.0 (29.7) 76.3 (32.2–175.2)
0.81 (0.69–0.89)
0.186
Quadriceps L (Newton)
84.5 (26.9) 84.4 (27.3–154.7)
77.9 (29.4) 76.4 (27.1–159.1)
0.84 (0.69–0.91)
Hip flexors R (Newtons)
78.8 (29.6) 82.8 (12.4–144.7)
73.5 (28.7) 70.9(13.3–150.6)
0.82 (0.69–0.90)
0.244
Hip flexors L (Newtons)
77.3 (28.1) 78.7 (19.9–144.5)
72.0 (29.2) 66.1 (23.5–162.8)
0.80 (0.67–0.89)
Triceps surae R (Newtons)
60.7 (27.3) 55.5 (16.6–154.4)
58.4 (27.4) 53.5 (16.8–155.6)
0.76 (0.60–0.86)
0.489
Triceps surae L (Newtons)
63.5 (26.4) 59.0 (22.5–154.1)
56.4 (25.3) 54.6 (0.0–140.2)
0.38 (0.11–0.59)
0.168
Hip adductors R (Newtons)
57.9 (23.2) 54.6 (23.2–123.6)
56.0 (20.3) 56.6 (22.2–125.6)
0.82 (0.70–0.89)
0.739
Hip Adductors L (Newtons)
59.6 (22.2) 58.2 (22.4–129.5)
58.4 (21.8) 54.7 (25.1–117.0)
0.79 (0.66–0.88)
0.573
Hip abductors R (Newtons)
61.0 (15.4) 59.8 (28.2–111.0)
60.7 (16.1) 59.6. (35.4–112.0)
0.70 (0.52–0.82)
0.638
Hip Abductors L (Newtons)
63.7 (21.2) 61.8 (29.5–126.0)
65.4 (25.2) 59.2 (26.8–161.7)
0.76 (0.61–0.86)
0.491
Hamstrings R (Newtons)
75.0 (25.0) 73.5 (12.1–133.4)
70.5 (24.4) 65.9 (22.8–130.7)
0.91 (0.81–0.95)
Hamstrings L (Newtons)
72.8 (24.6) 74.8 (25.3–123.6)
65.5 (23.6) 62.9 (22.6–125.5)
0.82 (0.59–0.90)
ICC: intraclass correlation coefficient—confidence intervals are also presented up to 95% of the mean; MDC: minimal detectable change, R: right; L: left; SD: standard deviation.