# Validity, Reliability and Sensitivity to Change of Three Consumer-Grade Activity Trackers in Controlled and Free-Living Conditions among Older Adults

> Research article (Sensors, 2021) · cited 15× · AI/ML

**Wikidata**: [openalex:W3200845403](https://www.wikidata.org/wiki/openalex:W3200845403)  
**Source**: https://4ort.xyz/entity/validity-reliability-and-sensitivity-to-change-of-three-consumer-grade-activity-trackers-in-controlled-and-free-living-c