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. 2021 Nov 11;4:156. doi: 10.1038/s41746-021-00531-3

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 4 — Prediction curves are shown for VO2-TCN (proposed) with the lowest validation loss (VO2-TCN A) and 1 s receptive field (VO2-TCN NH), random forest (RF)²¹, and stacked long short-term memory network (LSTM)²³. Dashed gray line represents the participant’s ventilatory threshold.