Published in:
12-11-2022 | Letter to the Editor
Time to retire the notion that local and whole-body exercise thresholds are mechanistically linked?
Authors:
Richie P. Goulding, Simon Marwood, Tze-Huan Lei, Dai Okushima, David C. Poole, Thomas J. Barstow, Narihiko Kondo, Shunsaku Koga
Published in:
European Journal of Applied Physiology
|
Issue 2/2023
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Excerpt
We read with great interest the recent study by Caen et al. (
2022) and applaud their efforts in that undertaking. We firmly agree with the conclusion that “
whole-body and local thresholds should not be used interchangeably in practice”. However, we find it difficult to agree with their assertions that “
these thresholds are collectively linked to the physiological events during the transition from heavy-to-severe intensity exercise”, and “
these thresholds are expressions of linked physiological phenomena”. This is based not only on the authors’ own data but also on our previous study showing that the association between the respiratory compensation point (RCP) and muscle deoxygenation breakpoint (deoxy[heme]
BP) can be experimentally dissociated (Goulding et al.
2021). Herein we offer an alternative interpretation of Caen et al. (
2022); that, when considered alongside our recent work (Goulding et al.
2021), presents the clear perspective that local metabolic thresholds are not mechanistically linked to systemic thresholds in any systematic fashion. …
