A database with frailty, functional and inertial gait metrics for the research of fall causes in older adults - García-de-Villa, Sara; Neira, Guillermo García-Villamil; Álvarez, Marta Neira; Huertas-Hoyas, Elisabet; Ruiz, Luisa Ruiz; del-Ama, Antonio J.; Sánchez, María Cristina Rodríguez; Jiménez, Antonio R. (Scientific Data, 2023)