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Cycling performance is superior for time-to-exhaustion versus time-trial in endurance laboratory tests.

Coakley, Sarah L., Passfield, Louis (2017) Cycling performance is superior for time-to-exhaustion versus time-trial in endurance laboratory tests. Journal of Sports Sciences, . pp. 1228-1234. ISSN 0264-0414. E-ISSN 1466-447X. (doi:10.1080/02640414.2017.1368691) (KAR id:63001)

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http://dx.doi.org/10.1080/02640414.2017.1368691

Abstract

Time-to-exhaustion trials (TTE) are used in a laboratory setting to measure endurance performance. However, there is some concern with their ecological validity compared with time-trials (TT). Consequently, we aimed to compare cycling performance in TTE and TT where the duration of the trials was matched. Seventeen trained male cyclists completed three TTE at 80, 100 and 105% of maximal aerobic power (MAP). On a subsequent visit they performed three TT over the same duration as the TTE. Participants were blinded to elapsed time, power output, cadence and heart rate (HR). Average TTE was 865 ± 345 s, 165 ± 98 s and 117 ± 45 s for the 80, 100 and 105% trials respectively. Average power output was higher for TTE (294 ± 44 W) compared to TT (282 ± 43 W) at 80% MAP (P<0.01), but not at 100 and 105% MAP (P>0.05). There was no difference in cadence, HR, or RPE for any trial (P>0.05). Critical power (CP) was also higher when derived from TTE compared to TT (P<0.01). It is concluded that TTE results in a higher average power output compared to TT at 80% MAP. When determining CP, TTE rather than TT protocols appear superior.

Item Type: Article
DOI/Identification number: 10.1080/02640414.2017.1368691
Uncontrolled keywords: pacing - critical power - endurance performance
Divisions: Divisions > Division of Natural Sciences > School of Sport and Exercise Sciences
Depositing User: Louis Passfield
Date Deposited: 01 Sep 2017 08:27 UTC
Last Modified: 16 Feb 2021 13:48 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/63001 (The current URI for this page, for reference purposes)
Passfield, Louis: https://orcid.org/0000-0001-6223-162X
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