Title
Does Wearable-Measured Heart Rate Variability During Sleep Predict Perceived Morning Mental and Physical Fitness?
Author
de Vries, H.
Oldenhuis, H.
van der Schans, C.
Sanderman, R.
Kamphuis, W.
Publication year
2023
Abstract
The emergence of wearable sensor technology may provide opportunities for automated measurement of psychophysiological markers of mental and physical fitness, which can be used for personalized feedback. This study explores to what extent within-subject changes in resting heart rate variability (HRV) during sleep predict the perceived mental and physical fitness of military personnel on the subsequent morning. Participants wore a Garmin wrist-worn wearable and filled in a short morning questionnaire on their perceived mental and physical fitness during a period of up to 46 days. A custom-built smartphone app was used to directly retrieve heart rate and accelerometer data from the wearable, on which open-source algorithms for sleep detection and artefact filtering were applied. A sample of 571 complete observations in 63 participants were analyzed using linear mixed models. Resting HRV during sleep was a small predictor of perceived physical fitness (marginal R2 =.031), but not of mental fitness. The items on perceived mental and physical fitness were strongly correlated (r =.77). Based on the current findings, resting HRV during sleep appears to be more related to the physical component of perceived fitness than its mental component. Recommendations for future studies include improvements in the measurement of sleep and resting HRV, as well as further investigation of the potential impact of resting HRV as a buffer on stress-related outcomes. (C) 2023, The Author(s).
Subject
Ecological momentary assessment
Heart rate variability
Military
Resilience
Sleep
Wearables
To reference this document use:
http://resolver.tudelft.nl/uuid:c168ca8b-bd76-4dde-937d-44a285eb9b36
DOI
https://doi.org/10.1007/s10484-022-09578-8
TNO identifier
981440
ISSN
1090-0586
Source
Applied Psychophysiology Biofeedback, Epub 9 January
Document type
article