Amiez, N.; Zografou, S.; Timbert, T.; Martin, A.; Methenitis, S.; Babault, N.; Paizis, C. Effect of Different Local Vibration Durations on Knee Extensors’ Maximal Isometric Strength. Appl. Sci.2023, 13, 11376.
Amiez, N.; Zografou, S.; Timbert, T.; Martin, A.; Methenitis, S.; Babault, N.; Paizis, C. Effect of Different Local Vibration Durations on Knee Extensors’ Maximal Isometric Strength. Appl. Sci. 2023, 13, 11376.
Amiez, N.; Zografou, S.; Timbert, T.; Martin, A.; Methenitis, S.; Babault, N.; Paizis, C. Effect of Different Local Vibration Durations on Knee Extensors’ Maximal Isometric Strength. Appl. Sci.2023, 13, 11376.
Amiez, N.; Zografou, S.; Timbert, T.; Martin, A.; Methenitis, S.; Babault, N.; Paizis, C. Effect of Different Local Vibration Durations on Knee Extensors’ Maximal Isometric Strength. Appl. Sci. 2023, 13, 11376.
Abstract
Prolonged application (> 20 minutes) of LV on muscles or tendons is known to reduce maximal isometric strength. However, the effect of short vibration durations (< 6 minutes) is still unknown. In fourteen participants, the changes in maximal voluntary isometric contraction (MVIC) were measured after 1, 3, and 6 minutes of rest (CONT) or local vibration (LV) over the quadricipital tendon (frequency: 100 Hz; amplitude: 0.5mm). Before and after each condition, the amplitude of the twitch induced by a 100 Hz potentiated electrical doublet (PDPOT), relative electromyographic activity of the vastus medialis and rectus femoris muscle during the MVIC (RMSMVIC.M-1), the torque developed 50 ms after the onset of contraction (T50) and the voluntary activation level (VAL) were evaluated. None of the three LV durations significantly changed MVIC compared with the control condition (p = .379). Indices of central (i.e., VAL, T50, RMSMVIC.M-1) and peripheral (PDPOT) fatigue were unaffected (p > .147). In conclusion, a short duration of LV (<6min) on a voluminous muscle group, does not impair maximal force production nor induce any central or peripherical fatigue.
Keywords
local vibration; maximal voluntary isometric strength; knee extensor
Subject
Biology and Life Sciences, Anatomy and Physiology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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