Preprint / Version 1

In-situ MMP-cadence relationship for 2-, 5- and 20-min duration

a proof of concept in U19 cyclists

##article.authors##

  • Yann Bertron Inter-university Laboratory of Motricity Biology (LIBM)
  • Maximilien Bowen
  • Peter Leo
  • Pierre Samozino
  • Alexandre Pacot
  • Frédérique Hintzy
  • Baptiste Morel

DOI:

https://doi.org/10.51224/SRXIV.192

Keywords:

power profiling, force-velocity, endurance, training, racing

Abstract

Background. Power profiling has been very well studied with Mean Maximal Power (MMP) but the cadence at which power has been produced has never been taken into account. However, the power- cadence relationship defines that the power production is limited according to the rate. A maximal power (Pmax) can only be produced in optimal torque (Topt) and cadence (Copt) conditions. This study aimed to propose and evaluate a method to determine the MMP – cadence relationship for different typical exercise duration based from in-situ data. Methods. Fourteen under 19 national level cyclists participated in this study. A complete U19 season was analyzed and MMP was calculated for each cadence between 50 to 120 rpm for 2-, 5- and 20- minutes duration. the MMP-cadence relationship was fit with a second order polynomial function. Goodness of the fit (r2) and odd-even days absolute and relative reliability have been measured respectively for (Pmax), (Topt) and (Copt). Results. The goodness of the fit was very high for every duration (median r2 were 0.90, 0.89 and 0.72 for 2-, 5- and 20- minutes respectively). The relative reliability (ICC) and magnitude of the random error (SEM) was good to excellent for all parameters and durations (0.73 < ICC < 0.92; 2.5 < SEM < 8.2%). Discussion. The evaluation of a MMP – cadence relationship is feasible and reliable for 2, 5 and 20- min durations from in situ data. This profiling approach would allow to better detect the strengths and weaknesses of cyclists and to design more-effective training interventions.

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Posted

2022-09-02