Table 1. Changes (mean ± SD) in knee flexion range of motion (ROM), maximal voluntary isometric contraction torque of knee extensor at 70° (MVC-ISO), maximal voluntary concentric contraction torque (MVC-CON) at 60°/s, counter movement jump (CMJ) height before maximal eccentric contraction task (baseline), pre- and post-vibration foam rolling (VFR) intervention at both low-frequency (LF)- and high-frequency (HF) intervention. The two-way ANOVA results (T: time effect, G x T: group x time interaction effect; F-value) and partial η2 (ηp2) are shown in right column. |
|
LF-VFR Group (N = 14) |
HF-VFR Group (N = 14) |
ANOVA results |
Baseline |
Pre-intervention |
Post-intervention |
Baseline |
Pre-intervention |
Post-intervention |
P value, F value, ηp2 |
Knee flexion ROM (°) |
139.6 ± 6.0 |
126.5 ± 12.7*† |
133.7 ± 8.6#† |
135.9 ± 6.1 |
94.6 ± 9.9* |
109.8 ± 6.3*# |
T: p < 0.01, F = 113.3, ηp2 = 0.813
G x T: p < 0.01, F = 32.0, ηp2 = 0.552 |
MVC-ISO (Nm) |
209.4 ± 33.7 |
121.2± 34.6* |
135.5 ± 41.2* |
217.3 ± 26.1 |
147.2 ± 56.0* |
153.0 ± 54.5* |
T: p < 0.01, F = 42.8, ηp2 = 0.622
G x T: p =0.45, F = 0.62, ηp2 = 0.018 |
MVC-CON (Nm) |
164.6 ± 23.8 |
103.6 ± 38.4* |
107.9 ± 38.1* |
171.9 ± 17.2 |
111.1 ± 42.8* |
121.8 ± 40.5* |
T: p < 0.01, F = 36.3, ηp2 = 0.583
G x T: p = 0.89, F = 0.12, ηp2 = 0.004 |
CMJ height (cm) |
19.7 ± 3.3 |
14.3 ± 3.8* |
15.7 ± 3.9* # |
21.4 ± 4.5 |
15.8 ± 6.3* |
17.9 ± 6.8# |
T: p < 0.01, F = 34.3, ηp2 = 0.569
G x T: p = 0.88, F = 0.13, ηp2 = 0.005 |
|
*: A significantly (p < 0.05) different from the baseline value; |
#: A significantly (p < 0.05) different from the pre-intervention value; |
† : A significantly (p < 0.05) different from HF-VFR group. |
|