. 2021 Mar 22;10(3):e25838. doi: 10.2196/25838
©Aiwei Wang, Yang Gao, Jingjing Wang, Tomas K Tong, Yan Sun, Siyue Yu, Hong Zhao, Daozhi Zou, Ziheng Zhang, Yuling Qi, Nan Zuo, Danran Bu, Dexing Zhang, Yaojie Xie, Julien S Baker. Originally published in JMIR Research Protocols (http://www.researchprotocols.org), 22.03.2021.
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Figure 2.
Program overview. HRR: heart rate reserve.