Won-Sik Bae, Keon-Cheol Lee, Dong-Yeop Lee (2023) “Comparison of Abdominal Muscle Thickness According to Duration after Side Body Crunch Exercise with Audiovisual Feedback”, Journal for ReAttach Therapy and Developmental Diversities, 6(3s), pp. 172–177. doi: 10.67145/jrtdd.v6i3s.342.