The role of respiratory work in core muscle fatigue during running

This abstract (eCollection 2014 May 1;13(2):244-51.) was published in the Journal of Sports Science and Medicine.

STUDY

The occurrence of core muscle fatigue during high-intensity running exercise and its limitation to performance: the role of respiratory work. 

Tong TK, Wu S, Nie J, Baker JS, Lin H

Abstract:

“This study investigated the occurrence of core muscle fatigue during high-intensity running exercise and its limitation to exercise performance. A secondary aim was to investigate whether respiratory muscle work performed during intense running periods, would contribute to core muscle fatigue.”

Results:

“The results suggest that a high-intensity maximum run may induce core muscle fatigue in runners. The core muscle fatigue, which may be partly attributed to the corresponding respiratory work, may limit their running endurance. Inspiratory muscle function appears to be essential for core stabilization during the intense running.”

Conclusion:

Core muscle function in endurance runners subsequent to intense running to exhaustion was impaired with fatigue. With the preceded core muscle fatigue workout, the endurance capacity for performing intense running was reduced. In mimicking the respiratory responses recorded during intense running while the runners were standing upright and free from whole-body exercise, core muscle function decreased.

Key points:

  • A high-intensity maximum run may induce core muscle fatigue in runners. The core muscle fatigue, which may be partly attributed to the corresponding respiratory work, may limit their running endurance.
  • In support of previous notion, inspiratory muscles may share the work of core stabilization during intense exercise, while simultaneously increasing the demand for breathing.
  • Inspiratory muscle training incorporated into a running specific-core training regime potentially enhances the training effect on the core muscles in a functional manner to deal with the challenges faced during intense exercise.

View the full research here. 

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