Outcome measures of physical status and severity of the disease
| GOLD III | GOLD IV | P-value | |
| Dynamometry right leg (N) | 95.89±58.69 | 97.84±60.12 | 0.861 |
| Dynamometry left leg (N) | 96.92±58.23 | 100.70±58.77 | 0.730 |
| OLS right leg (s) | 21.53±40.20 | 4.11±5.12 | <0.001** |
| OLS left leg (s) | 9.65±12.43 | 3.69±4.01 | <0.001** |
OLS: One Leg Stance. Data are expressed as mean ± standard deviation. p<0.001**