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Perceived exertion responses to wheelchair propulsion differ between novice able-bodied and trained wheelchair sportspeople

journal contribution
posted on 17.10.2019 by Michael Hutchinson, Jonathan Kilgallon, Christof Leicht, Vicky Goosey-Tolfrey
Objectives: To investigate peripheral (RPEP) and central (RPEC) rating of perceived exertion during wheelchair propulsion in untrained able-bodied (AB) participants, and trained wheelchair rugby athletes with and without cervical spinal cord injury (CSCI).
Design: Cross-sectional study.
Methods: 38 participants (AB: n = 20; wheelchair rugby athletes with CSCI: n = 9; without CSCI: n = 9) completed an incremental wheelchair propulsion test to exhaustion on a motorised treadmill. Gas exchange measures and heart rate (HR) were collected throughout. RPEP and RPEC on the Category Ratio-10 were verbally recorded each minute. Blood lactate concentration ([BLa]) was determined post-test.
Results: Between 50-100% peak oxygen uptake (V̇O2peak), RPEP was greater than RPEC in AB (p < 0.05), but not in athletes with (p = 0.07) or without (p = 0.16) CSCI. RPEP was greater in AB compared to players with CSCI (Effect sizes: 1.24-1.62), as were respiratory exchange ratio (1.02 ± 0.10 vs. 0.82 ± 0.11, p < 0.05) and [BLa]peak (7.98 ± 2.53 vs 4.66 ± 1.57 mmol·L-1). RPEC was greater in athletes without CSCI compared to those with CSCI (Effect sizes: 0.70-1.38), as were HR (166 ± 20 vs. 104 ± 15 beats·min-1, p < 0.05) and ventilation (59.2 ± 28.8 vs. 35.1 ± 16.6 L·min-1, p = 0.01).
Conclusion: RPEP was dominant over RPEC during wheelchair propulsion for untrained AB participants. For athletes with CSCI, lower RPEP and RPEC were reported at the same %V̇O2peak compared to those without CSCI. The mechanism for this remains to be fully elucidated.

History

School

  • Sport, Exercise and Health Sciences

Published in

Journal of Science and Medicine in Sport

Volume

23

Issue

4

Pages

403-407

Publisher

Elsevier

Version

AM (Accepted Manuscript)

Rights holder

© Elsevier

Publisher statement

This paper was accepted for publication in the journal Journal of Science and Medicine in Sport and the definitive published version is available at https://doi.org/10.1016/j.jsams.2019.10.012.

Acceptance date

15/10/2019

Publication date

2019-10-23

Copyright date

2019

ISSN

1440-2440

Language

en

Depositor

Michael Hutchinson. Deposit date: 16 October 2019

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