Table 7.
Performance Data
| Variable | Group | Number | Time (wk) | p-value | |||
|---|---|---|---|---|---|---|---|
| 0 | 4 | 8 | |||||
| Bench Press (kg) | PLA | 27 | 100.6 ± 20.8 | 102.9 ± 24.7 | 104.0 ± 23.3 | Group | 0.56 |
| PWS | 27 | 96.7 ± 23.1 | 99.2 ± 21.3 | 102.7 ± 21.7 | Time | <0.001 | |
| PWS + S | 26 | 102.0 ± 16.3 | 106.2 ± 16.7 | 108.6 ± 17.1 | G x T | 0.33 | |
| Leg Press (kg) | PLA | 27 | 472.8 ± 149.8 | 490.3 ± 134.2 | 491.1 ± 131.0 | Group | 0.67 |
| PWS | 27 | 436.6 ± 96.6 | 466.0 ± 101.9 | 474.0 ± 96.3 | Time | <0.001 | |
| PWS + S | 26 | 454.2 ± 79.4 | 474.4 ± 92.1 | 494.9 ± 100.9 | G x T | 0.28 | |
| Peak Power (Watt) | PLA | 27 | 1,472 ± 485 | 1,630 ± 475 | 1,507 ± 385 | Group | 0.91 |
| PWS | 27 | 1,502 ± 384 | 1,602 ± 354 | 1,603 ± 466 | Time | 0.01 | |
| PWS + S | 26 | 1,445 ± 324 | 1,605 ± 444 | 1,544 ± 403 | G x T | 0.83 | |
| Mean Power (Watt) | PLA | 27 | 647 ± 146 | 640 ± 133 | 636 ± 127 | Group | 0.95 |
| PWS | 27 | 630 ± 72 | 643 ± 66 | 638 ± 69 | Time | 0.23 | |
| PWS + S | 26 | 630 ± 114 | 656 ± 134 | 612 ± 145 | G x T | 0.40 | |
| Peak Power (Watt/kg) | PLA | 27 | 18.3 ± 5.6 | 20.2 ± 5.4 | 18.4 ± 4.0 | Group | 0.90 |
| PWS | 27 | 18.6 ± 4.7 | 19.8 ± 4.6 | 19.8 ± 5.8 | Time | 0.02 | |
| PWS + S | 26 | 18.3 ± 3.6 | 20.2 ± 5.3 | 19.4 ± 4.8 | G x T | 0.80 | |
| Mean Power (Watt/kg) | PLA | 27 | 8.0 ± 1.1 | 7.9 ± 1.0 | 7.7 ± 0.9 | Group | 0.73 |
| PWS | 27 | 7.8 ± 1.2 | 8.0 ± 1.1 | 7.9 ± 1.0 | Time | 0.18 | |
| PWS + S | 26 | 8.0 ± 1.1 | 8.2 ± 1.4 | 8.0 ± 1.2 | G x T | 0.33 | |
| Total Work (Joules) | PLA | 27 | 19,394 ± 4,377 | 19,217 ± 4,019 | 19,109 ± 3,826 | Group | 0.98 |
| PWS | 27 | 18,927 ± 2,166 | 19,319 ± 2,003 | 19,156 ± 2,095 | Time | 0.17 | |
| PWS + S | 26 | 18,923 ± 3,431 | 19,680 ± 4,025 | 19,213 ± 3,110 | G x T | 0.29 | |
Values are means ± standard deviations. Strength (Bench and Leg Press) were analyzed by MANOVA. MANOVA analysis revealed overall Wilks’ Lambda group (p = 0.58), time (p < 0.001), and group x time (p = 0.29). Greenhouse-Geisser time and group x time interaction p-values are reported with univariate group p-values. * represents p < 0.05 difference from baseline. ^ represents p < 0.05 difference from wk 4