J Korean Phys Ther.  2022 Dec;34(6):298-303. 10.18857/jkpt.2022.34.6.298.

Effect of Post-Activation Potentiation according to Sequence of Velocity Using Isokinetic Device on Short-Term Performance of Lower Extremity: Taekwondo Athletes and Healthy Adults

• Pyun SW
• Kim SE
• Kim JW
• Lee D
• Hong JH
• Yu JH
• Kim JS
• Yang HS
• Kim Sg

• KMID: 2538909
• DOI: http://doi.org/10.18857/jkpt.2022.34.6.298

Abstract

Purpose
The purpose of this study was to figure out how PAP (Post-Activation Potentiation) phenomenon affects short-term performance efficiently.
Methods
This study was conducted with 18 Taekwondo athletes and 16 healthy adults. By using isokinetic dynamometer, two different intervention, TDP (Top-down program) and BUP (Bottom-up program), were performed to measure isokinetic parameter; (peak torque: PT, total work: TW, average power: AP, and average torque: AT) of knee extensor for intragroup, intergroup comparison and two-way ANOVA.
Results
The Taekwondo athletes group showed statistically significant differences in all isokinetic parameters PT, TW, AP, and AT after TDP (p < 0.05). However, in the healthy adult group, the difference in isokinetic parameters according to the exercise sequence was not statistically significant. (p > 0.05). PT and TW at TDP were statistically significant (p < 0.05) when the rate of change in TDP and BUP was compared and analyzed considering the difference in physical ability between the Taekwondo athlete group and the healthy adult group. However, AP and AT were not statistically significant. Finally, when examining the interaction between the two groups and two exercise sequence according to isokinetic parameters, only TW (p < 0.05) showed a statistically significant interaction, while PT (P = 0.099), AP (P = 0.103), and AT (P = 0.096) did not. This study suggests that short-term performance can be improved through the PAP phenomenon when TDP is applied to the Taekwondo group.
Conclusion
According to our result, for Taekwondo athletes, if the goal is to improve short-term performance just before the main game, we suggest a training program through TDP.

Keyword

Postactivation potentiation; Isokinetic dynamometer; Velocity; Taekwondo; Fatigue; Delorme training; Oxford training