Wearable sleep-tracking technology is of growing use in the sleep and circadian fields,
including for applications across other disciplines, inclusive of a variety of disease states …

Heart rate variability (HRV) is a measurement of the fluctuation of time between each
heartbeat and reflects the function of the autonomic nervous system. HRV is an important …

Heart rate variability reflects fluctuations in the changes in consecutive heartbeats, providing
insight into cardiac autonomic function and overall physiological state. Endurance athletes …

Heart rate (HR) and heart rate variability (HRV) can be monitored with wearable devices
throughout the day. Resting HRV in particular, reflecting cardiac parasympathetic activity …

The value of heart rate variability (HRV) in the fields of health, disease, and exercise science
has been established through numerous investigations. The typical mobile-based HRV …

Purpose: To assess the reliability of nocturnal heart rate (HR) and HR variability (HRV) and
to analyze the sensitivity of these markers to maximal endurance exercise. Methods …

Background Sleep is disturbed in Rett syndrome (RTT), a rare and progressive
neurodevelopmental disorder primarily affecting female patients (prevalence 7.1/100,000 …

In modern soccer, fitness and fatigue monitoring tools tend to be focused on noninvasive,
time‐efficient and player‐friendly measures. Heart rate variability (HRV) has been …

This contribution highlights the significance of using vagally-mediated heart rate variability
(vmHRV), a general indicator of adaptation, as an actionable biomarker to assess and …

Purpose: To investigate the influence of menstrual-cycle (MC) phase on measures of
recovery status, that is, resting heart rate, perceived sleep quality, and physical and mental …