A Review of Physical Activity Monitoring and Activity Trackers for Older Adults.

The objective assessment of physical activity levels through wearable inertial-based motion detectors for an automatic, continuous and long-term monitoring of people in free-living environments is a well-known research area in literature. However, their application to older adults can present particular constraints. This paper reviews the methods of measuring physical activity, adoption of wearable devices in older adults, describes and compares existing commercial products encompassing activity trackers tailored for older participants.