Chia-Smith Y-D. Psychobiosocial states in competitive badminton: Similarities and differences between juniors, adolescents and adults. Int. j. racket sports sci. [Internet]. 2019Dec.30 [cited 2026Apr.2];1(2):49-0. Available from: https://journal.racketsportscience.org/index.php/ijrss/article/view/28