Table 3. Normalized mean RMS (%) of the countermovement jump performance across all time (mean ± SD).
|
Phase |
Baseline |
Post 30 seconds |
ES |
Post 3 minutes |
ES |
Post 6 minutes |
ES |
Post 9 minutes |
ES |
| VM |
| CRT |
ECC |
32.96 ± 10.1 |
31.12 ± 10.92 |
–0.17 |
32.35 ± 9.01 |
–0.06 |
30.94 ± 13.64 |
–0.17 |
31.95 ± 9.26 |
–0.1 |
| CON |
75.54 ± 20.92 |
78.8 ± 23.26 |
0.15 |
78.43 ± 18.05 |
0.15 |
72.14 ± 19.32 |
–0.17 |
71.9 ± 20.49 |
–0.18 |
| 20%VRT |
ECC |
35.75 ± 8.03 |
35.13 ± 11.19 |
–0.06 |
36.31 ± 9.45 |
0.06 |
35.54 ± 10.83 |
–0.02 |
37.43 ± 16 |
0.13 |
| CON |
83.68 ± 30.32 |
81.91 ± 2.5 |
–0.08 |
79.7 ± 25.26 |
–0.14 |
79.49 ± 22.97 |
–0.16 |
79.8 ± 18.84 |
–0.15 |
| 30%VRT |
ECC |
33.86 ± 6.98 |
34.6 ± 8.77 |
0.09 |
32.22 ± 6.57 |
–0.24 |
32.31 ± 8.14 |
–0.2 |
34.2 ± 7.35 |
0.05 |
| CON |
69.25 ± 11.11 |
75.41 ± 13.77 |
0.49 |
76.42 ± 14.34†‡ |
0.56 |
68.62 ± 13.37 |
–0.05 |
65.18 ± 20.15 |
–0.25 |
| 40%VRT |
ECC |
29.69 ± 13.48 |
30.35 ± 12.52 |
0.05 |
29.81 ± 12.3 |
0.01 |
28.88 ± 10.66 |
–0.07 |
28.77 ± 11.56 |
–0.15 |
| CON |
64.93 ± 26.05 |
69.29 ± 22.37 |
0.18 |
69.3 ± 20.88 |
0.19 |
66.39 ± 20.83 |
0.06 |
61.73 ± 23.38 |
–0.15 |
| VL |
| CRT |
ECC |
36.67 ± 18.49 |
37.5 ± 23.1 |
0.04 |
40.12 ± 24.93 |
0.16 |
33.12 ± 15.31 |
–0.21 |
34.87 ± 18.69 |
–0.1 |
| CON |
57.24 ± 12.25 |
55.98 ± 14.26 |
–0.09 |
59.65 ± 17.49 |
0.16 |
54.71 ± 16.97 |
–0.17 |
56.75 ± 21.18 |
–0.03 |
| 20%VRT |
ECC |
31.6 ± 8.59 |
30 ± 9.68 |
–0.17 |
29.41 ± 8.16 |
–0.26 |
32 ± 9.68 |
0.04 |
30.83 ± 11.28 |
–0.08 |
| CON |
66.3 ± 16.08 |
68.87 ± 17.37 |
0.15 |
70.6 ± 21.4 |
0.23 |
67.5 ± 19.45 |
0.07 |
64.98 ± 19.13 |
–0.07 |
| 30%VRT |
ECC |
36.8 ± 20.8 |
34.46 ± 16.32 |
–0.13 |
31.12 ± 18.26 |
–0.29 |
35.09 ± 23 |
–0.08 |
34.96 ± 21.98 |
–0.09 |
| CON |
63.86 ± 20.08 |
67.76 ± 19.2 |
0.2 |
70.59 ± 20.83*‡ |
0.33 |
68.5 ± 18.48‡ |
0.24 |
62.22 ± 20.3 |
–0.08 |
| 40%VRT |
ECC |
31.62 ± 7.25 |
35.37 ± 12.43 |
0.37 |
30.79 ± 9.01 |
–0.1 |
31.88 ± 9.73 |
0.03 |
31.97 ± 10.93 |
0.04 |
| CON |
57.08 ± 24.64 |
63.58 ± 26.31 |
0.26 |
66.99 ± 27.39* |
0.38 |
64.08 ± 25.33* |
0.28 |
58.8 ± 24.85 |
0.07 |
| MG |
| CRT |
ECC |
21.14 ± 8.3 |
20.16 ± 9.8 |
0.2 |
23.17 ± 11.96 |
0.2 |
22.39 ± 12.15 |
0.12 |
18.51 ± 7.36 |
–0.34 |
| CON |
80.57 ± 24.95 |
81.75 ± 23.34 |
0.05 |
80.93 ± 27.54 |
0.01 |
79.6 ± 20.45 |
–0.04 |
78.04 ± 23.06 |
–0.11 |
| 20%VRT |
ECC |
22.22 ± 12.23 |
22.93 ± 13.84 |
0.05 |
22.57 ± 11.66 |
0.03 |
20.91 ± 11.64 |
–0.11 |
21.7 ± 11.6 |
–0.04 |
| CON |
88.1 ± 29.5 |
85.63 ± 28.01 |
–0.09 |
85.88 ± 28 |
–0.08 |
90.37 ± 31.45 |
0.07 |
84.27 ± 28.93 |
–0.13 |
| 30%VRT |
ECC |
21.12 ± 13.16 |
19.54 ± 7.63 |
–0.15 |
19.4 ± 13.14 |
–0.13 |
23.98 ± 16.25 |
0.19 |
24.4 ± 16.92 |
0.22 |
| CON |
89.75 ± 40.97 |
98.25 ± 52.1 |
0.18 |
90.11 ± 35.52 |
0.01 |
90.1 ± 34.04 |
0.01 |
85.91 ± 35.17 |
–0.1 |
| 40%VRT |
ECC |
26.81 ± 15.67 |
22.63 ± 13.95 |
–0.28 |
21.91 ± 13.24 |
–0.34 |
24.03 ± 14.96 |
–0.18 |
21.8 ± 13.2 |
–0.35 |
| CON |
90.92 ± 33.22 |
90.53 ± 31.32 |
–0.01 |
94.33 ± 29.28 |
0.11 |
89.3 ± 32.92 |
–0.05 |
86.71 ± 33.25 |
–0.13 |
CRT, constant resistance training; VRT, variable resistance training; VM, vastus medialis; VL, vastus lateralis, MG, medial gastrocnemius; ECC, eccentric; CON, concentric; ES, effect size.
*P ≤ 0.05: Statistically significant differences compared with baseline†P < 0.5, Statistically significant differences compared with post 6 minutes‡P < 0.5, Statistically significant differences compared with post 9 minutes.
