Locomotor & diaphragm muscle fatigue in endurance athletes

Published in the European Journal of Applied Physiology (August 2014, Volume 114, Issue 8, pp 1619-1633).

STUDY

Locomotor and diaphragm muscle fatigue in endurance athletes performing time-trials of different durations
Thomas U. Wüthrich, Elisabeth C. Eberle, Christina M. Spengler

Purpose:

“Fatigue in leg muscles might differ between running and cycling due to inherent differences in muscle activation patterns. Moreover, postural demand placed upon the diaphragm during running could augment the development of diaphragm fatigue.”

Method:

"We investigated quadriceps and diaphragm fatigue in 11 runners and 11 cyclists."

Conclusion:

“Different levels of leg muscle fatigue in runners and cyclists could in part be related to the specific muscle activation patterns including concentric contractions in both modalities but eccentric contractions in runners only. Diaphragm fatigue likely resulted from the large ventilatory load which is characteristic for both exercise modalities and which was higher in 15TTs than in 30TTs (+27 %, p < 0.01) while postural demand appears to be of less importance.”

Thankfully there is something you can do to help alleviate diaphragm fatigue. Like any other muscle group you can train your breathing muscles (which includes your diaphragm) with POWERbreathe Inspiratory Muscle Training. Click on the links below to find out more about:

View the Abstract here

View list of published research that used POWERbreathe as the IMT intervention of choice in POWERbreathe in Research.

Find more published research on our Inspiratory Muscle Training Research blog.

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