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. 2019 Sep 18;119(11):2487–2498. doi: 10.1007/s00421-019-04231-5

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© The Author(s) 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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.

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Fig. 2 — Means (95% confidence intervals) of root mean square of successive RR interval differences (RMSSD) among children with low (≤ sex-specific median) and high (> sex-specific median) maximal workload per lean body mass (CRF) and sedentary time (ST)