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. Author manuscript; available in PMC: 2022 Mar 5.
Published in final edited form as: IEEE J Biomed Health Inform. 2021 Mar 5;25(3):634–646. doi: 10.1109/JBHI.2020.3009903

Fig. 1.

Fig. 1.

(a) A subject configured with both the wearable patch and the COSMED K5 system, with inset showing a zoomed-in image of the ECG electrodes. (b) The wearable patch top, bottom, and inside. The microSD (1), microUSB (2), and battery (3) are shown. (c) A map of the outdoor walking route across Georgia Institute of Technology with marked terrain. (d) An outline of the study protocol.