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. 2021 May 13;7(2):e001005. doi: 10.1136/bmjsem-2020-001005

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© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

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Mean value of the RMSSD in U1 and U3. RMSSD, root mean square of successive differences; U1, investigation 7 days before the run; U3, investigation 7 days after the run.