The acute effect of different frequencies of whole-body vibration on range of motion and jump performance in preadolescent karate athletes

Year 2018, Volume: 20 Issue: 2, 122 - 126, 31.08.2018

Esra Atış Ertuğrul Gelen , Suat Yıldız

https://doi.org/10.15314/tsed.418996

Cited By: 1

Abstract

Whole-body vibration
(WBV) treatments have acute effects on strength, power, and range of motion
(ROM) by affecting the nerve-muscle function. However, there is little evidence
about what could be the optimal practice for acute WBV. The purpose of this study
is to reveal the acute effects of vibrations applied at different frequencies
to preadolescent karate athletes on jump and ROM performance. Forty-six
competing preadolescent karate athletes, who trained regularly (12.7 ± 1.7 years, 155.2 ± 3.1 cm, 50.9 ± 4.7 kg) and were blue belt
and above, were included in the study. Each athlete
followed a vibration protocol with four different frequencies (0, 25, 30, and
35 Hz) in random order on nonconsecutive days. After a 5 min light-paced warm-up
jog before each protocol, three repetitions of 20 sec (20 sec rest between
repetitions) vibration treatments were applied. Jump and ROM tests were carried
out after each vibration treatment. Vibration protocols were compared in
repeated measurements using the ANOVA and post-hoc methods. Based on the test
results, a vibration frequency range of 30 to 35 Hz positively affected the countermovement
jump, while the 30 Hz frequency range positively affected squat jumps.
Furthermore, frequency ranges of 25, 30, and 35 Hz positively affected the ROM.
This effect was most intensely revealed in the 35 Hz frequency range. Applying
vibrations between the ranges of 30-35 Hz on preadolescent karate practitioners
is believed to acutely improve both jump and ROM performance.

Keywords

Vibration, Range of motion, Jump, Power, karate

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