A randomized controlled trial of gamification, financial incentives, or both to increase physical activity among patients with elevated risk for cardiovascular disease: rationale and design of the be active study

Alexander C. Fanaroff, Mitesh S. Patel, Neel Chokshi, Samantha Coratti, David Farraday, Laurie Norton, Charles Rareshide, Jingsan Zhu, Julia E. Szymczak, Louise B. Russell, Dylan S. Small, Kevin G. Volpp