Costalupes, Blake, Jenelle N. Gilbert, Wade Gilbert, and Michael G. Coles. “A Smartphone Mindfulness-Based Intervention Pilot Study With Competitive High School Baseball Players”. Journal of Kinesiology & Wellness 9 (January 7, 2021): 63–72. Accessed June 24, 2025. https://jkw.wskw.org/index.php/jkw/article/view/76.