. 2020 Aug 5;8(8):e18370. doi: 10.2196/18370
©Jiaxing Liu, Yang Zhao, Boya Lai, Hailiang Wang, Kwok Leung Tsui. Originally published in JMIR mHealth and uHealth (http://mhealth.jmir.org), 05.08.2020.
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Figure 2.
Kernel density plots for heart rate and log(X_STEP+1) for all participants.