Table 2. Main outcome.
| Variable | Baseline | After 10 treatments | |||
| LIPUS | Therapeutic exercise | LIPUS | Therapeutic exercise | Effect size | |
| PTTA KF10, degrees | 39.2 ± 4.0 | 40.8 ± 9.3 | 35.1 ± 4.0 | 39.4 ± 6.1** | 0.397 |
| PTTA KF90, degrees | 18.8 ± 5.5 | 21.5 ± 6.6 | 13.4 ± 4.8 | 19.7 ± 4.7** | 0.569 |
| PTTA KF120, degrees | 13.8 ± 5.2 | 14.2 ± 5.2 | 6.7 ± 3.6 | 13.2 ± 5.0** | 0.614 |
| Gliding KF10-90, degrees | 20.4 ± 5.8 | 19.3 ± 7.3 | 21.7 ± 5.5 | 19.7 ± 4.5 | 0.202 |
| Gliding KF 90-120, degrees | 5.0 ± 3.4 | 7.2 ± 2.9* | 6.7 ± 3.0 | 6.5 ± 4.0 | 0.033 |
| Echo intensity 10 | 84.0 ± 15.4 | 92.9 ± 15.1 | 82.0 ± 20.0 | 89.2 ± 14.2 | 0.211 |
| Echo intensity 90 | 78.5 ± 14.4 | 80.9 ± 12.7 | 71.6 ± 14.5 | 81.3 ± 15.9 | 0.315 |
| Echo intensity 120 | 85.8 ± 16.1 | 87.0 ± 14.6 | 79.7 ± 16.3 | 86.5 ± 14.3 | 0.224 |
| Thickness change ratio | 130.0 ± 20.0 | 130.0 ± 20.0 | 150.0 ± 40.0 | 140.0 ± 20.0 | 0.232 |
Data expressed as mean ± SD. LIPUS: low-intensity pulsed ultrasound; PTTA: patellar tendon tibial angle; KF: knee flexion; SD: standard deviation.
*p<0.05, **p<0.01.