Table 4 Correlations between muscle strength and independent variables in healthy women (n = 93)
Independent variables | Isometric knee extension force (N) | Isometric elbow flexion force (N) | Hand-grip force (N) | 6MWT (m) |
|---|---|---|---|---|
rs (p-value) | rs (p-value) | rs (p-value) | ||
Isometric knee extension force (N) | – | 0.62 (< 0.001) | 0.60 (< 0.001) | 0.33 (0.001) |
Isometric elbow flexion force (N) | 0.62 (< 0.001) | – | 0.74 (< 0.001) | 0.40 (< 0.001) |
Hand-grip force (N) | 0.61 (< 0.001) | 0.74 (< 0.001) | – | 0.44 (< 0.001) |
6MWT (m) | 0.33 (0.001) | 0.40 (< 0.001) | 0.44 (< 0.001) | – |
Age (years) | − 0.28 (0.007) | − 0.15 (0.163) | − 0.23 (0.025) | − 0.29 (0.005) |
BMI | − 0.07 (0.538) | 0.24 (0.023) | − 0.18 (0.086) | − 0.41 (< 0.001) |
SF36 PF (0–100) | 0.14 (0.170) | 0.21 (0.047) | 0.19 (0.065) | 0.33 (0.001) |