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Title: Assessment of peak oxygen uptake during handcycling: test-retest reliability and comparison of a ramp-incremented and perceptually-regulated exercise test
Authors: Hutchinson, Michael J.
Paulson, Thomas A.W.
Eston, Roger G.
Goosey-Tolfrey, Victoria L.
Keywords: RPE
Self-regulation
Exercise testing
Upper body exercise
Issue Date: 2017
Publisher: Public Library of Science © Hutchinson et al.
Citation: HUTCHINSON, M.J. ... et al, 2017. Assessment of peak oxygen uptake during handcycling: test-retest reliability and comparison of a ramp-incremented and perceptually-regulated exercise test. PLoS One, 12 (7), e0181008.
Abstract: Purpose To examine the reliability of a perceptually-regulated maximal exercise test (PRETmax) to measure peak oxygen uptake () during handcycle exercise and to compare peak responses to those derived from a ramp-incremented protocol (RAMP). Methods Twenty recreationally active individuals (14 male, 6 female) completed four trials across a 2-week period, using a randomised, counterbalanced design. Participants completed two RAMP protocols (20 W·min-1) in week 1, followed by two PRETmax in week 2, or vice versa. The PRETmax comprised five, 2-min stages clamped at Ratings of Perceived Exertion (RPE) 11, 13, 15, 17 and 20. Participants changed power output (PO) as often as required to maintain target RPE. Gas exchange variables (oxygen uptake, carbon dioxide production, minute ventilation), heart rate (HR) and PO were collected throughout. Differentiated RPE were collected at the end of each stage throughout trials. Results For relative , coefficient of variation (CV) was equal to 4.1% and 4.8%, with ICC(3,1) of 0.92 and 0.85 for repeated measures from PRETmax and RAMP, respectively. Measurement error was 0.15 L·min-1 and 2.11 ml·kg-1·min-1 in PRETmax and 0.16 L·min-1 and 2.29 ml·kg-1·min-1 during RAMP for determining absolute and relative , respectively. The difference in between PRETmax and RAMP was tending towards statistical significance (26.2 ± 5.1 versus 24.3 ± 4.0 ml·kg-1·min-1, P = 0.055). The 95% LoA were -1.9 ± 4.1 (-9.9 to 6.2) ml·kg-1·min-1. Conclusion The PRETmax can be used as a reliable test to measure during handcycle exercise in recreationally active participants. Whilst PRETmax tended towards significantly greater values than RAMP, the difference is smaller than measurement error of determining from PRETmax and RAMP.
Description: This is an Open Access Article. It is published by Public Library of Science under the Creative Commons Attribution 4.0 International Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/
Version: Published
DOI: 10.1371/journal.pone.0181008
URI: https://dspace.lboro.ac.uk/2134/25823
Publisher Link: https://doi.org/10.1371/journal.pone.0181008
ISSN: 1932-6203
Appears in Collections:Published Articles (Sport, Exercise and Health Sciences)

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