The Impact Of Swimming Speed On Respiratory Muscle Fatigue During Front Crawl Swimming

“The Critical velocity (Vcrit) represents a holistic swimming fatigue threshold and critical stroke rate is thought to coincide with Vcrit. Whether Vcrit, and in-turn critical stroke rate, also represent an inspiratory muscle fatigue threshold is not known.”

Conclusion:

“The study provided data demonstrating that inspiratory muscle fatigue is correlated with relative but not absolute front crawl swimming velocity, and stroke rate. Whilst this finding is obvious and to be expected, the novel aspect is that the study was able to determine the relative velocity associated with the development of inspiratory muscle fatigue. Specifically, inspiratory muscle fatigue occurred when swimming at (in some) and above (in all) Vcrit and when stroke rate was at (in some) or above (in all) 92% of critical stroke rate in both male and female adolescent swimmers.”

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