Table 4. Comparison of vertical and antero-posterior ground reaction force profiles corresponding to each muscle module.
| Ground reaction force (N/kg) | Module | Elderly | Young | ||
|---|---|---|---|---|---|
| Males (n = 10) | Females (n = 10) | Males (n = 10) | Females (n = 10) | ||
| Vertical | 1 | 8.41 (1.79)* | 8.67 (1.63)* | 9.68 (1.76) | 10.26 (0.86) |
| 2 | 8.93 (0.72) | 9.36 (0.43) | 9.49 (0.98) | 8.81 (0.70) | |
| 3 | 7.95 (2.21) | 7.85 (2.09) | 8.38 (3.18) | 9.40 (0.78) | |
| 4 | 0.08 (0.08) | 0.06 (0.09) | 0.04 (0.06) | 0.08 (0.06) | |
| 5 | 3.74 (3.86) | 5.20 (3.15) | 5.45 (1.00) | 5.92 (2.56) | |
| Antero-posterior | 1 | −1.49 (0.55)* | −1.56 (0.36)* | −1.85 (0.37) | −1.93 (0.28) |
| 2 | 0.24 (0.13)† | 0.61 (0.41) | 0.61 (0.37) | 0.42 (0.25) | |
| 3 | 1.61 (0.30)* | 1.57 (0.37)* | 1.92 (0.73) | 2.32 (0.35) | |
| 4 | 0.00 (0.01) | 0.00 (0.04) | 0.00 (0.03) | 0.03 (0.03) | |
| 5 | −0.54 (0.69) | −0.54 (0.46) | −0.86 (0.46) | −0.80 (0.44) | |
Value are shown as the mean (standard deviation: SD). Positive and negative values of antero-posterior ground reaction force indicate anterior and posterior components, respectively. *Significant difference from the young at p < 0.05. †Significant difference from the young males at p < 0.05.