Wearable Sensor/Device (Fitbit One) and SMS Text-Messaging Prompts to Increase Physical Activity in Overweight and Obese Adults: A Randomized Controlled Trial - Wang, JB; Cadmus-Bertram, LA; Natarajan, L; White, MM; Madanat, H; Nichols, JF; Ayala, GX; Pierce, JP (Telemed J E Health., 2015)