Selecting physical exercises on Precor machine to develop Delta muscle group for first-year specialized students of gymnastics, Hanoi University of Sports and Physical Education. jstsc [Internet]. 2019 Dec. 12 [cited 2024 Dec. 27];1(Đặc biệt):544. Available from: https://tckhupes1.edu.vn/index.php/upes1/article/view/1705