Comparison of inter-trial recovery times for the determination of critical power and W’ in cycling.

Karsten, B. and Hopker, James G. and Jobson, Simon A. and Baker, J and Petringa, Luca and Klose, Andreas and Beedie, C. (2016) Comparison of inter-trial recovery times for the determination of critical power and W’ in cycling. Journal of Sports Sciences, 35 (14). pp. 1420-1425. ISSN 0264-0414. E-ISSN 1466-447X. (doi:https://doi.org/10.1080/02640414.2016.1215500) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1080/02640414.2016.1215500

Abstract

Critical Power (CP) and W’ are often determined using multi-day testing protocols. To investigate this cumbersome testing method, the purpose of this study was to compare the differences between the conventional use of a 24-h inter-trial recovery time with those of 3 h and 30 min for the determination of CP and W’. Methods: 9 moderately trained cyclists performed an incremental test to exhaustion to establish the power output associated with the maximum oxygen uptake (pmax), and 3 protocols requiring time-to-exhaustion trials at a constant work-rate performed at 80%, 100% and 105% of pmax. Design: Protocol A utilised 24-h inter-trial recovery (CP24/W’24), protocol B utilised 3-h inter-trial recovery (CP3/W’3), and protocol C used 30-min inter-trial recovery period (CP0.5/W’0.5). CP and W’ were calculated using the inverse time (1/t) versus power (P) relation (P = W’(1/t) + CP). Results: 95% Limits of Agreement between protocol A and B were ?9 to 15 W; ?7.4 to 7.8 kJ (CP/W’) and between protocol A and protocol C they were ?27 to 22 W; ?7.2 to 15.1 kJ (CP/W’). Compared to criterion protocol A, the average prediction error of protocol B was 2.5% (CP) and 25.6% (W’), whilst for protocol C it was 3.7% (CP) and 32.9% (W’). Conclusion: 3-h and 30-min inter-trial recovery time protocols provide valid methods of determining CP but not W’ in cycling.

Item Type: Article
Uncontrolled keywords: Critical intensity, power-duration relationship, exercise testing, anaerobic work capacity, validity
Subjects: R Medicine > RC Internal medicine > RC1235 Physiology of sports
Divisions: Faculties > Sciences > School of Sport and Exercise Sciences
Depositing User: James Hopker
Date Deposited: 10 Aug 2016 10:45 UTC
Last Modified: 20 Jun 2018 12:21 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/56780 (The current URI for this page, for reference purposes)
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