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Table 1 Pearson correlation coefficients, and 95% confidence intervals, between the measured values for the four CPET scores and the IPAQ global score, and the eight wearable variables

From: Can wearable technology be used to approximate cardiopulmonary exercise testing metrics?

Wearable variable CPET variables IPAQ global score
Peak VO2 VE/VCO2 AT Peak work
Floors climbed 0.57 (0.29, 0.76) − 0.30 (− 0.58, 0.04) 0.37 (0.01, 0.64) 0.56 (0.27, 0.75) 0.71 (0.45, 0.86)
Intense minutes 0.08 (− 0.26, 0.41) 0.06 (− 0.29, 0.39) − 0.01 (− 0.37, 0.35) 0.06 (− 0.28, 0.39) 0.32 (− 0.07, 0.63)
Average heart rate − 0.27 (− 0.55, 0.08) − 0.01 (− 0.35, 0.33) − 0.47 (− 0.71, − 0.13) − 0.18 (− 0.49, 0.17) − 0.16 (− 0.51, 0.24)
Resting heart rate − 0.26 (− 0.55, 0.08) 0.07 (− 0.28, 0.40) − 0.36 (− 0.64, 0.00) − 0.15 (− 0.46, 0.20) − 0.09 (− 0.46, 0.30)
Maximum heart rate 0.00 (− 0.34, 0.34) − 0.09 (− 0.42, 0.25) − 0.18 (− 0.50, 0.20) 0.16 (− 0.19, 0.47) 0.31 (− 0.08, 0.62)
Total steps 0.59 (0.31, 0.77) − 0.19 (− 0.50, 0.16) 0.39 (0.04, 0.66) 0.48 (0.17, 0.70) 0.54 (0.20, 0.76)
Total calories 0.02 (− 0.32, 0.36) − 0.07 (− 0.40, 0.27) − 0.15 (− 0.48, 0.22) 0.07 (− 0.27, 0.40) 0.20 (− 0.20, 0.54)
Total distance 0.62 (0.35, 0.79) − 0.21 (− 0.51, 0.14) 0.42 (0.07, 0.68) 0.50 (0.20, 0.72) 0.51 (0.17, 0.75)
  1. AT Anaerobic threshold, CPET Cardio-pulmonary exercise testing, VO2 Maximal oxygen uptake, IPAQ International Patient Activity Questionnaire