Effects of IMT on Resistance to Fatigue of Respiratory Muscles in Exercise

EliteVelo Kalas Sportswear Cycling Race Team by Richard Fox Photography

EliteVelo Kalas Sportswear Cycling Race Team using POWERbreathe Plus IMT (above)
PHOTO: Richard Fox Photography

STUDY:

Effects of Inspiratory Muscle Training on Resistance to Fatigue of Respiratory Muscles During Exhaustive Exercise
M. O. Segizbaeva, N. N. Timofeev, Zh. A. Donina, E. N. Kur’yanovich, N. P. Aleksandrova

This study, published in Body Metabolism and Exercise - Advances in Experimental Medicine and Biology (Volume 840, 2015, pp 35-43) concluded that IMT elicits resistance to the development of inspiratory muscles fatigue during high-intensity exercise.

PURPOSE:

To assess the effect of inspiratory muscle training (IMT) on resistance to fatigue of the diaphragm, parasternal, sternocleidomastoid and scalene muscles in healthy humans during exhaustive exercise.

The sternocleidomastoid muscle flexes the neck and helps with the oblique rotation of the head. Also, the muscle helps in forced inspiration while breathing, and it raises the sternum. As for forced inspiration, the muscle also works in concert with the scalene muscles in the neck. The scalene muscles are lateral vertebral muscles that begin at the first and second ribs and pass up into the sides of the neck. There are three of these muscles. (SOURCE: Healthline.com)

CONCLUSION:

“The study found that in healthy subjects, IMT results in significant increase in MIP (+18 %), a delay of inspiratory muscle fatigue during exhaustive exercise, and a significant improvement in maximal work performance. We conclude that the IMT elicits resistance to the development of inspiratory muscles fatigue during high-intensity exercise.”

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