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. 2020 Aug 2;17(15):5576. doi: 10.3390/ijerph17155576

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Figure A2 — Predicted values from mixed-effects models of internal physical load indices. Left panel: HR as a function of task and time in the task (scaled). Middle panel: VO_2rel as a function of task and time in the task (scaled). Right panel: RER as a function of task and time in the task (scaled).