Heart rate variability is one of the main things your smartwatch or fitness tracker measures. Here's what it means.

Fitness trackers and smart watches are widely popular wearable devices that measure several types of health metrics, including step count, calories burned, sleep quality, Vo2 max and heart rate. As a ...

Even greater risk for mortality, CV events in presence of several high-variability metabolic parameters (HealthDay News) — High variability in metabolic parameters is associated with increased risk ...

Predictive Value of Bone Resorption and Formation Markers in Cancer Patients With Bone Metastases Receiving the Bisphosphonate Zoledronic Acid To compare the variability and sample size requirements ...