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

Karsten, B., Hopker, James G., Jobson, Simon A., Baker, J, Petringa, Luca, Klose, Andreas, 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: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)

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. (Contact us about this Publication)
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
DOI/Identification number: 10.1080/02640414.2016.1215500
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: 29 May 2019 17:42 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/56780 (The current URI for this page, for reference purposes)
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