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 …

Photoplethysmography (PPG) is a low-cost, noninvasive optical technique that uses change
in light transmission with changes in blood volume within tissue to provide information for …

As wearable technologies are being increasingly used for clinical research and healthcare,
it is critical to understand their accuracy and determine how measurement errors may affect …

Background Numerous wrist-wearable devices to measure physical activity are currently
available, but there is a need to unify the evidence on how they compare in terms of …

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

Alzheimer's Disease (AD) represents a major and rapidly growing burden to the healthcare
ecosystem. A growing body of evidence indicates that cognitive, behavioral, sensory, and …

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 …

Researchers have increasingly begun to use consumer wearables or wrist-worn
smartwatches and fitness monitors for measurement of cardiovascular psychophysiological …

Photoplethysmography is a key sensing technology which is used in wearable devices such
as smartwatches and fitness trackers. Currently, photoplethysmography sensors are used to …