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Forearm muscles fatigue induced by repetitive braking on a motorcycle is best discriminated by specific kinetic parameters

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  • Michel Marina
  • Priscila Torrado
  • Stéphane Baudry
  • Jacques Duchateau

Abstract

Maneuvering a motorcycle in racing conditions or for prolonged time is sufficiently demanding that on many occasions forearm muscles reach a state of functional failure when riders cannot properly brake or operate the throttle. This study intends to discriminate which ones of the several dynamometric parameters used in the literature to characterize the Force-time (F-t) curve during voluntary contractions are more sensitive to neuromuscular fatigue in simulated motorcycle-riding conditions. Thirty-three adults performed an intermittent fatiguing protocol (IFP) that simulated the brake-pulling and throttle-twisting actions, by using a hydraulic system equipped with a pressure sensor. Sixty pressure-time (P-t) curve parameters, including the rate of pressure development (RPD) and area under the curve were measured to characterize the time course of the braking maximal voluntary contraction (MVC). Two types of variables were used to analyze the P-t curve: 1) Times interval (from 0 to 30-50-100-500-1000 and 2000 ms); 2) Percentages of MVC (10-30-60-90%MVC). Overall significant (p ≤ 0.05) fatigue-related declines were observed only at time intervals longer than 100 ms and contraction intensities higher than 30%MVC. Strong and significant linear declines (p

Suggested Citation

  • Michel Marina & Priscila Torrado & Stéphane Baudry & Jacques Duchateau, 2021. "Forearm muscles fatigue induced by repetitive braking on a motorcycle is best discriminated by specific kinetic parameters," PLOS ONE, Public Library of Science, vol. 16(2), pages 1-19, February.
    • Handle: RePEc:plo:pone00:0246242
    DOI: 10.1371/journal.pone.0246242
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    Cited by:

    1. Priscila Torrado & Michel Marina & Stéphane Baudry & Martín Ríos, 2021. "Muscle Fatigue When Riding a Motorcycle: A Case Study," IJERPH, MDPI, vol. 18(15), pages 1-13, July.

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