Assessing Older Adult's Gait Speed with Wearable Accelerometers in Community Settings: Validity and Reliability Study. - Antonio Cobo; Elena Villalba Mora; Rodrigo Pérez-Rodríguez; Juan E. Medina; Paula Robles-Mateos; Ángel Rodríguez-Laso; Leocadio Rodríguez-Mañas (PervasiveHealth, 2022)