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Menthol alleviates post-race elevations in muscle soreness and metabolic and respiratory stress during running

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European Journal of Applied Physiology Aims and scope Submit manuscript

Abstract

Purpose

We evaluated (1) whether participating in middle- and long-distance running races augments muscle soreness, oxygen cost, respiration, and exercise exertion during subsequent running, and (2) if post-race menthol application alleviates these responses in long-distance runners.

Methods

Eleven long-distance runners completed a 1500-m race on day 1 and a 3000-m race on day 2. On day 3 (post-race day), either a 4% menthol solution (Post-race menthol) or a placebo solution (Post-race placebo) serving as a vehicle control, was applied to their lower leg skin, and their perceptual and physiological responses were evaluated. The identical assessment with the placebo solution was also conducted without race participation (No-race placebo).

Results

The integrated muscle soreness index increased in the Post-race placebo compared to the No-race placebo (P < 0.001), but this response was absent in the Post-race menthol (P = 0.058). Oxygen uptake during treadmill running tended to be higher (4.3%) in the Post-race placebo vs. No-race placebo (P = 0.074). Oxygen uptake was 5.4% lower in the Post-race menthol compared to the Post-race placebo (P = 0.018). Minute ventilation during treadmill running was 6.7–7.6% higher in the Post-race placebo compared to No-race placebo, whereas it was 6.6–9.0% lower in the Post-race menthol vs. Post-race placebo (all P ≤ 0.001). The rate of perceived exertion was 7.0% lower in the Post-race menthol vs. Post-race placebo (P = 0.007).

Conclusions

Middle- and long-distance races can subsequently elevate muscle soreness and induce respiratory and metabolic stress, but post-race menthol application to the lower legs can mitigate these responses and reduce exercise exertion in long-distance runners.

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Data availability

Data will be made available upon reasonable request.

Abbreviations

ANOVA:

Analysis of variance

CI:

Confidence interval

TRP:

Transient receptor potential

TRPM8:

Transient receptor potential melastatin 8

References

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Acknowledgements

This study was conducted without external funding. We would like to express our gratitude to the long-distance running team at the University of Tsukuba for their cooperation on the project and to Nanae Shirai for her assistance in conducting the experiments.

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Authors and Affiliations

Authors

Contributions

N.F. and Y.I. conceived and designed experiments. Y.I., Y.I., E.I., Y. F. L., and K.O. contributed to data collection. N.F. and Y.I. performed data analysis. N.F., Y.I., Y.I., E.I., Y. F. L., Y.T., T.F., K.O., Y.N., T.H., and T.N. interpreted the experimental results. N.F. drafted the manuscript. All authors edited and revised the manuscript and approved the final version of the manuscript. All experiments took place at the Institute of Health and Sport Sciences, University of Tsukuba.

Corresponding author

Correspondence to Naoto Fujii.

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Additional information

Communicated by Michael I Lindinger.

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Fujii, N., Igarashi, Y., Ishii, Y. et al. Menthol alleviates post-race elevations in muscle soreness and metabolic and respiratory stress during running. Eur J Appl Physiol (2024). https://doi.org/10.1007/s00421-024-05463-w

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  • DOI: https://doi.org/10.1007/s00421-024-05463-w

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