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Evaluation of Stair Climbing as an Approach for Estimating Heart Rate Recovery in Daily Activities

Abstract: Post-Exercise heart rate recovery (HRR) is a convenient approach to assess cardiovascular autonomic function. Ordinary stair climbing can be viewed as an alternative HRR test performed in daily activities, and also wellsuited for implementation in wrist-worn devices. This study compares HHR parameters estimated after stair climbing to those obtained by performing the conventional YMCA bench step test using a custom-made wristworn device and a consumer smart wristband Fitbit Charge 2. The results show that most HHR parameters are underestimated after stair climbing but still comparable to those obtained from the bench step test. The lowest relative error, 8–11% on average, was found for the decay of heart rate in 30, 60, and 120 s after the recovery onset.