Fig. 1
From: Can wearable technology be used to approximate cardiopulmonary exercise testing metrics?
Pearson correlation coefficients between the CPET parameters and the wearable parameters. CPET parameters are peak work, VE/VCO2, VO2, AT (anaerobic threshold). Wearable parameters are floors climbed, intense minutes of activity, average heart rate, resting heart rate, maximum heart rate, step count, total calories and total distance