TABLE 3.
Individual-level changes based on e smallest worthwhile change (SWC) analysis across PGJ condition.
| Variables | SWC (0.2 × SDPLA) | Responders PGJ (n) | Responders PGJ (%) | |
| IFT parameters | VIFT (km/h) | 0.19 | 17 | 77% |
| VO2max (ml/kg.BM) | 0.44 | 17 | 77% | |
| TTE (min) | 0.28 | 20 | 90% | |
| SLJ (cm) | Baseline | 1.94 | 9 | 41% |
| 0’-IFT | 1.9 | 10 | 45% | |
| 5’-IFT | 1.86 | 12 | 54% | |
| VAFS (mm) | Baseline | 0.70 | 12 | 54% |
| 0’-IFT | 0.71 | 7 | 32% | |
| 5’-IFT | 2.1 | 13 | 59% | |
PGJ, purple grape juice; PLA, placebo; VAFS, visual analog fatigue scale; SLJ, standing long jump; IFT, 30-15 Intermittent Fitness Test; VIFT, (the final) velocity–Intermittent Fitness Test; 0’-IFT, Immediately after IFT; 5’-IFT, 5 min after IFT; TTE, time to exhaustion.