Reliability of Lower Extremity Muscle Power and Functional Performance in Healthy, Older Women
Table 6
Reliability data for functional performance for time points 1 and 2 (weeks 0–9, n = 18), 2 and 3 (weeks 9–15, n = 16), and 1 and 3 (weeks 0–15, n = 16).
CVTE
ICC (CI) value
1 and 2
2 and 3
1 and 3
1 and 2
2 and 3
1 and 3
SPPB
3.6
3.5
3.8
0.90 (0.73–0.96) <0.001
0.88 (0.65–0.96) <0.001
0.82 (0.44–0.94) <0.001
4 MUP (s)
10.1
8.7
9.6
0.76 (0.36–0.91) <0.01
0.81 (0.45–0.93) <0.01
0.74 (0.29–0.91) <0.01
4 MFP (s)
10.3
5.7
9.1
0.77 (0.40–0.91) <0.01
0.91 (0.73–0.97) <0.001
0.69 (0.10–0.89) 0.02
400 MW (s)
5.0
1.9
5.6
0.87 (0.66–0.95) <0.001
0.93 (0.80–0.98) <0.001
0.64 (0.05–0.87) 0.02
5 CS (s)
14.9
10.3
12.7
0.71 (0.25–0.89) 0.01
0.84 (0.57–0.95) <0.001
0.81 (0.30–0.94) <0.001
30 sCS (reps)
9.2
11.8
10.6
0.90 (0.75–0.96) <0.001
0.85 (0.57–0.95) <0.001
0.88 (0.52–0.96) <0.001
SCUP (s)
9.6 (n = 17)
6.8
7.8 (n = 15)
0.88 (0.65–0.96) <0.001
0.91 (0.73–0.97) <0.001
0.86 (0.60–0.95) <0.001
SCFP (s)
7.9 (n = 17)
8.6
9.5 (n = 15)
0.93 (0.82–0.98) <0.001
0.80 (0.42–0.93) <0.01
0.82 (0.45–0.94) <0.01
SCP (W)
9.8 (n = 16)
6.9 (n = 15)
8.9 (n = 15)
0.93 (0.80–0.98) <0.001
0.95 (0.86–0.98) <0.001
0.94 (0.82–0.98) <0.001
aCVTE: coefficient of variation of the typical error (%); ICC: intraclass correlation coefficient; CI: 95% confidence interval; SPPB: Short Physical Performance Battery; 4 MUP: 4-meter usual pace walk; 4MFP: 4-meter fast pace walk; 400 MW: 400-meter walk; 5 CS: 5 chair stands; 30 sCS: 30-second chair stands; SCUP: stair climb usual pace; SCFP: stair climb fast pace; SCP: stair climb power for the SCFP; all ICCs were significant; .
