(AG)Acquisition of a Wimo PRO-Real Systems. GPS device for monitoring different variables related to physical activity and sport.

Identification of Target Body Composition Parameters by Dual-Energy X-Ray Absorptiometry, Bioelectrical Impedance, and Ultrasonography to Detect Older Adults With Frailty and Prefrailty Status Using a Mobile App in Primary Care Services: Descriptive Cross-Sectional Study