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Adherence to the mobile phone app. Changes in physical activity evaluated with the accelerometer, according to adherence to the mobile phone app (number of days with a record in the app). Higher adherence (>60 days): 56.8%, 236/415; lower adherence (≤60 days): 43.1%, 179/415. (0-6 days: 17.8%, 74/415; 7-30 days: 10.3%, 43/415; 31-60 days: 14.9%, 62/415).
