Enhancing Psychological Skills and Well-being in Sport Through a Blended Intervention: a Controlled Study With Perform-UP Tennis

"Perform-UP Tennis is a sport specific mental training app that integrates breathing, relaxation and na-ture-based guided imagery exercises and aims to promote emotional well-being and the enhancement of mental skills. The app techniques are integrated into a single gradual path that involves increasingly complex breathing and relaxation exercises with increasing duration.~The intervention consists of eight weekly modules over a period of 8 weeks with progressive exercises."