Usability testing of an e-learning resource designed to improve medical students' physical activity prescription skills: a qualitative think-aloud study.

Medical students value the role of physical activity in health but are disappointed by the lack of teaching within the current medical curriculum. E-learning resources, such as MEGA, which contain interactive features are a viable means to integrate physical activity into the undergraduate curriculum but should be supplemented by the opportunity to practice physical activity counselling in-person.