Kordi et al_SJMSS_Accepted version.pdf (1.01 MB)

Mechanical and morphological determinants of peak power output in elite cyclists

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journal contribution
posted on 18.10.2019, 10:28 by Mehdi Kordi, Jonathan Folland, Stuart Goodall, Nicos Haralabidis, Tom Maden-Wilkinson, Tejal Sarika Patel, Jonathan Leeder, Paul Barratt, Glyn Howatson
Mechanical peak power output (PPO) is a determinant of performance in sprint cycling. The purpose of this study was to examine the relationship between PPO and putative physiological determinants of PPO in elite cyclists, and to compare sprint performance between elite sprint and endurance cyclists. Thirty-five elite cyclists (18 endurance; 17 sprint) performed duplicate sprint cycling lab tests to establish PPO and its mechanical components. Quadriceps femoris (QVOL ) and hamstrings muscle volume (HAMVOL ) were assessed with MRI, vastus lateralis pennation angle (PθVL ) and fascicle length (FLVL ) were determined with ultrasound imaging, and neuromuscular activation of three muscles were assessed using EMG at PPO during sprint cycling. For the whole cohort there was a wide variability in PPO (range 775-2025 W) with very large, positive, bivariate relationships between PPO and QVOL (r = 0.87), HAMVOL (r = 0.71) and PθVL (r = 0.81). Step-wise multiple regression analysis revealed that 87% of the variability in PPO between cyclists was explained by two variables QVOL (76%) and PθVL (11%). The sprint cyclists had greater PPO (+61%; P < 0.001 vs endurance), larger QVOL (P < 0.001) and BFVOL (P < 0.001) as well as more pennate vastus lateralis muscles (P < 0.001). These findings emphasise the importance of quadriceps muscle morphology for sprint cycling events.

History

School

  • Sport, Exercise and Health Sciences

Published in

Scandinavian Journal of Medicine and Science in Sports

Volume

30

Issue

2

Pages

227-237

Publisher

John Wiley & Sons Ltd

Version

AM (Accepted Manuscript)

Rights holder

© John Wiley & Sons A/S

Publisher statement

This is the peer reviewed version of the following article: KORDI, M. ... et al., 2019. Mechanical and morphological determinants of peak power output in elite cyclists. Scandinavian Journal of Medicine and Science in Sports, 30(2), pp. 227-237, which has been published in final form at https://doi.org/10.1111/sms.13570. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.

Acceptance date

07/10/2019

Publication date

2019-10-10

Copyright date

2019

ISSN

0905-7188

eISSN

1600-0838

Language

en

Depositor

Prof Jonathan Folland. Deposit date: 17 October 2019

Exports

Loughborough Publications

Categories

Exports