Table 4.
Time-dependent changes of the static and dynamic bipedal balance values
| Aerobic exercise group (n=16) | Strength exercise group (n=11) | Control group (n=16) | Brunner Langer model (Interaction effect) | The comparison of the pre- and post-exercise difference values among the groups | ||||
|---|---|---|---|---|---|---|---|---|
| Before | After | Before | After | Before | After | |||
| Bipedal static front-back sway (mm / sec) | 7.5 (5–25) | 7 (5–15) | 7 (5–20) | 7 (5–17) | 7.5 (4–16) | 8 (5–13) | p=0.378¥ | p=0.343 |
| p=0.507 | p=0.513 | p=0.223 | ||||||
| Bipedal static medio-lateral sway (mm / sec) | 7 (4–21) | 6 (3–15) | 6 (5–14) | 7 (5–15) | 7 (3–13) | 8 (3–13) | p=0.067¥¥ | pa=0.014§ pb=1.000 pc=0.069 |
| p=0.034* | p=0.356 | p=0.107 | ||||||
| Bipedal static ellipse area (mm2) | 330 (100–4329) | 203 (53–1579) | 263 (134–721) | 286 (120–964) | 180 (84–2548) | 342 (102–1988) | p=0.007¥¥ | pa=0.003§§ pb=0.792 pc=0.198 |
| p<0.001** | p=0.672 | p=0.128 | ||||||
| Bipedal static perimeter (mm) | 349 (220–1043) | 338 (225–692) | 337 (234–792) | 346 (268–720) | 341 (173–598) | 412 (224–677) | p=0.116¥ | pª=0.022§ pb=0.378 pc=1.000 |
| p=0.385 | p=0.555 | p=0.353 | ||||||
| Bipedal dynamic front-back sway (mm / sec) | 21 (9–47) | 16 (10–29) | 15 (10–34) | 15 (12–28) | 17 (6–27) | 17 (8–30) | p=0.068¥¥ | pa=0.004§§ pb=1.000 pc=0.260 |
| p=0.002** | p=0.806 | p=0.682 | ||||||
| Bipedal dynamic medio-lateral sway (mm / sec) | 18 (11–57) | 13 (11–37) | 14 (11–23) | 12 (10–24) | 15 (7–25) | 16 (7–23) | p=0.018¥¥ | pa=0.013§ pb=1.000 pc=0.166 |
| p=0.001** | p=0.178 | p=0.758 | ||||||
| Bipedal dynamic ellipse area (mm2) | 1369 (457–1667) | 868 (358–3578) | 1316 (402–3786) | 955 (294–2550) | 1224 (516–5726) | 1427 (576–7211) | p=0.001¥¥ | pa<0.001§§ pb=0.124 pc=0.301 |
| p<0.001** | p=0.104 | p=0.397 | ||||||
| Bipedal dynamic perimeter (mm) | 902 (472–2401) | 670 (539–1413) | 719 (544–1306) | 668 (512–1207) | 757 (322–1117) | 773 (363–1222) | p=0.007¥¥ | pa=0.005§§ pb=1.000 pc=0.139 |
| p<0.001** | p=0.401 | p=0.636 | ||||||
Values are expressed as median (minimum – maximum) pa: Control × Aerobic, pb: Control × Strength, pc: Aerobic × Strength.
: Brunner Langer model analysis, p>0.10 indicates that there is no interaction between the independent variables.
: Brunner Langer model analysis, p<0.10 indicates an interaction between the independent variables (since the interaction was significant, additional analyses were done. Initially, the differences between pre– and post-exercise values were analyzed with Brunner Langer model analysis in each group, the differences between the first and last measurements among the groups were analyzed with the Kruskal-Wallis Test).
: p<0.05,
: p<0.01 (significant differences between pre- and post-exercise values within each group).
: p<0.05,
p<0.01(significant differences between pre- and post-exercise values within each group).