Table 2. Peak plantar flexor torque (PT) and rate of torque development (RTD) during maximum voluntary contractions and potentiated twitches following 30 s (V30) and 300 s (V300) of local vibration.
Performance measure
Baseline
Control
V30
V300
Main effect of condition p value (d)
absolute
%Baseline
absolute
%Baseline
absolute
%Baseline
Strength performance
Plantar flexor PT [Nm]
125.0 ± 14.8
118.7 ± 12.6
95.6
114.0 ± 15.7
93.2
117.3 ± 14.6
94.1
.508 (.53)
Voluntary RTD [Nm/s]
434.2 ± 93.9
398.5 ± 95.6
92.8
386.1 ± 68.8
90.5
397.6 ± 83.2
92.9
.532 (.45)
Twitch contractile properties
Twitch PT [Nm]
21.9 ± 2.7
21.2 ± 3.3
97.3
21.0 ± 3.0
96.7
21.1 ± 3.2
96.5
.920 (.18)
Twitch RTD [Nm/s]
745.0 ± 103.8
748.3±100.5
99.4
731.6 ± 85.7
99.0
730.0 ± 101.5
97.3
.609 (.45)
Voluntary activation [%]
93.3 ± 4.9
93.2± 5.7
102.3
92.7 ± 6.1
99.0
91.4 ± 6.4
109.2
.169 (.92)
Values are presented in means ± standard deviation; d: effect size (Cohen’s d).