Road cycle TT performance: relationship to the power-duration model and association with FTP

Morgan, Paul T, Black, Matthew I, Bailey, Stephen J, Jones, Andrew M and Vanhatalo, Anni (2019) Road cycle TT performance: relationship to the power-duration model and association with FTP. Journal of Sports Sciences, 37 (8). pp. 902-910. ISSN 0264-0414

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Official URL: https://doi.org/10.1080/02640414.2018.1535772

Abstract

Purpose: To determine the accuracy of critical power (CP) and Wʹ (the curvature constant of the power-duration relationship) derived from self-paced time-trial (TT) prediction trials using mobile power meters to predict 16.1-km road cycling TT performance. This study also aimed to assess the agreement between functional threshold power (FTP) and CP. Methods: Twelve competitive male cyclists completed an incremental test to exhaustion, a FTP test and 4–5 self-paced TT bouts on a stationary bike within the lab, and a 16.1 km road TT, using mobile power meters. Results: CP and Wʹ derived from the power-duration relationship closely predicted TT performance. The 16.1-km road TT completion time (26.7 ± 2.2 min) was not significantly different from and was significantly correlated with the predicted time-to-completion (27.5 ± 3.3 min, r = 0.89, P < 0.01). CP and FTP were not significantly different (275 ± 40 W vs. 278 ± 42 W, P > 0.05); however, the limits of agreement between CP and FTP were 30 to -36 W. Discussion: The findings of this study indicate that CP and Wʹ determined using mobile power meters during maximal, self-paced TT prediction trials can be used to accurately predict 16.1-km cycling performance, supporting the application of the CP and Wʹ for performance prediction. However, the limits of agreement were too large to consider FTP and CP interchangeable.

Item Type:	Article (Article)
Peer-reviewed:	Yes
Date Deposited:	23 Nov 2023 08:49
Publisher:	Taylor & Francis
Additional Information:	This is an Accepted Manuscript of an article published by Taylor & Francis in Journal of Sports Sciences on 2nd November 2018, available at: https://doi.org/10.1080/02640414.2018.1535772. It is deposited under the terms of the Creative Commons Attribution-NonCommercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Divisions:	Faculties > Science and Engineering Research Centres > Musculoskeletal Sciences & Sport Medicine
Subject terms:	Science & Technology, Life Sciences & Biomedicine, Sport Sciences, Critical power, functional threshold power, power meter, power-duration relationship, time-trial, TIME-TO-EXHAUSTION, RESPIRATORY PROFILE, EXERCISE TOLERANCE, UPTAKE KINETICS, WORK CAPACITY, RELIABILITY, THRESHOLD, CONSTANT, ACCURACY, DETERMINANT, Humans, Exercise Test, Pulmonary Gas Exchange, Oxygen Consumption, Time Factors, Bicycling, Sports Equipment, Adult, Male, Athletic Performance, Critical power, functional threshold power, power meter, power-duration relationship, time-trial, Adult, Athletic Performance, Bicycling, Exercise Test, Humans, Male, Oxygen Consumption, Pulmonary Gas Exchange, Sports Equipment, Time Factors, 1106 Human Movement and Sports Sciences, 1302 Curriculum and Pedagogy, Sport Sciences
URI:	https://e-space.mmu.ac.uk/id/eprint/633275
DOI:	https://doi.org/10.1080/02640414.2018.1535772
ISSN	0264-0414
e-ISSN	1466-447X

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