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Related Experiment Videos

Prior muscular exercise affects cycling pattern.

F Bieuzen1, C Hausswirth, A Couturier

  • 1Department of Ergonomics, University of Toulon Var, avenue de l'Université, La Garde Cedex, Toulon, France.

International Journal of Sports Medicine
|September 21, 2007
PubMed
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Prior eccentric exercise causes greater neuromuscular fatigue than concentric exercise, altering cycling patterns. This study examined how these exercise types impact well-trained cyclists.

Area of Science:

  • Exercise Physiology
  • Sports Science
  • Biomechanics

Background:

  • Neuromuscular fatigue significantly impacts athletic performance.
  • Understanding the differential effects of exercise types on fatigue is crucial for training optimization.

Purpose of the Study:

  • To investigate the impact of prior concentric (CC) and eccentric (ECC) knee exercise on cycling biomechanics and neuromuscular fatigue.
  • To compare the fatiguing effects of CC versus ECC exercise on well-trained cyclists.

Main Methods:

  • Eleven cyclists performed control cycling (CTRL), cycling after CC, and cycling after ECC knee contractions.
  • Maximal voluntary contraction (MVC), cardiorespiratory, mechanical, and electromyographic (EMG) data were collected.
  • Muscle activity of rectus femoris, vastus lateralis, and biceps femoris was analyzed.

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Main Results:

  • Both CC and ECC exercises led to decreased MVC values post-exercise.
  • ECC exercise resulted in lower EMG root mean square during MVC and reduced pedal rate during cycling.
  • Cycling after CC exercise showed significantly higher muscle EMG values compared to CTRL.

Conclusions:

  • Eccentric exercise induces greater neuromuscular fatigue than concentric exercise.
  • Prior fatiguing exercise, particularly ECC, alters cycling patterns and muscle activation strategies.