The ramp and all-out exercise test to determine critical power: validity and robustness to manipulations in body position

Goulding, Richie P and Roche, Denise and Marwood, Simon (2021) The ramp and all-out exercise test to determine critical power: validity and robustness to manipulations in body position. European Journal of Applied Physiology. ISSN 1439-6319

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Abstract

Purpose: The purpose of the present study was to determine whether a contiguous ramp and all-out exercise test could accurately determine critical power (CP) in a single laboratory visit during both upright and supine cycle exercise. Methods: Healthy males completed maximal ramp-incremental exercise on a cycle ergometer in the upright (n=15) and supine positions (n=8), with task failure immediately followed by a 3-minute all-out phase for determination of end-test power (EP). On separate days, participants undertook four constant-power tests in either the upright or supine positions with the limit of tolerance ranging from ~2 – 15 minutes for determination of CP. Results: During upright exercise, EP was highly correlated with (R2 = 0.93, P < 0.001) and not different from CP (CP = 221 ± 40 W vs. EP = 226 ± 46 W, P = 0.085, 95% limits of agreement -30, 19 W). During supine exercise, EP was also highly correlated with (R2 = 0.94, P < 0.001) and not different from CP (CP = 140 ± 42 W vs. EP = 136 ± 40 W, P = 0.293, 95% limits of agreement -16, 24 W). Conclusions: The present data suggest that EP derived from a contiguous ramp all-out exercise test is not different from the gold-standard method of CP determination during both upright and supine cycle exercise when assessed at the group level. However, the wide limits of agreement observed within the present study suggest that EP and CP should not be used interchangeably.

Item Type: Article
Additional Information and Comments: The final version is published at https://link.springer.com/article/10.1007/s00421-021-04739-9 and is open access.
Keywords: Critical power, all-out exercise, power-duration relationship, exercise testing, performance
Faculty / Department: Faculty of Science > School of Health Sciences
Depositing User: Simon Marwood
Date Deposited: 22 Jun 2021 13:27
Last Modified: 22 Jun 2021 13:27
URI: https://hira.hope.ac.uk/id/eprint/3318

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