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 conditionp 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).