Background: Consumer-wearable activity trackers are small electronic devices that record
fitness and health-related measures. Objective: The purpose of this systematic review was to …

Background: Although designed as a consumer product to help motivate individuals to be
physically active, Fitbit activity trackers are becoming increasingly popular as measurement …

Background New fitness trackers and smartwatches are released to the consumer market
every year. These devices are equipped with different sensors, algorithms, and …

This review and meta-analysis (PROSPERO registration number: CRD42020138845)
critically evaluates test-retest reliability, concurrent validity and criterion validity of different …

Background Heart rate variability, or the variation in the time interval between consecutive
heart beats, is a non-invasive dynamic metric of the autonomic nervous system and an …

Background Wrist-worn smart watches and fitness monitors (ie, wearables) have become
widely adopted by consumers and are gaining increased attention from researchers for their …

Background: Wearable devices have attracted much attention from the market in recent
years for their fitness monitoring and other health-related metrics; however, the accuracy of …

Objective To determine the accuracy of wrist and arm-worn activity monitors' estimates of
energy expenditure (EE). Data sources SportDISCUS (EBSCOHost), PubMed, MEDLINE …

Wearable physical activity trackers are a popular and useful method to collect biometric
information at rest and during exercise. The purpose of this systematic review was to …

Introduction: The use of wearable activity monitors has seen rapid growth; however, the
mode and intensity of exercise could affect validity of heart rate (HR) and caloric (energy) …