Motion Analysis for Jumping Discus Throwing Correction

Abstract

The purpose of this study was to explore the kinematical characteristics of jumping discus throwing. Eight male right-handed discus throwers who used to practice the jumping throwing technique were recruited as participants. Two high-speed digital cameras with 120 Hz sampling rate were synchronized to capture the movement. The captured images were processed using a motion analysis suite, and the markers attached to joints on images were digitized manually. Based on the results, throwers should keep smaller the shoulder–hip twisting and the right anterior superior iliac spine (abbreviated: ASIS) in front of the right acromion (for right-handed throwers) from the instant the right foot lands to the instant the left foot lands, before the instant of the right foot lands; keep the discus at a depressed position; and reduce the time before discus release, particularly the time of the non-support phase and the second single-support phase. Additionally, release velocity must be improved because throwing distance is directly proportional to squared release velocity. In conclusion, the current study demonstrated comprehensive kinematical analyses, which can be used to instruct the jumping discus throwing technique with duration and angle characteristics of throwing movement for athletes by coaches with videos.

Biomechanical properties of the discus throw: analytical case study of the Paralympic record holder in the F33 category

“…It is noticed that vertical acceleration rates are increased by a great margin, reaching 155 m s −1 , while the vertical acceleration values of the center of the body's gravity are lowered during the end of contact with the disc by a value of 5.72 m s −1 . The matter here is mainly related to the position of the player resulting from the use of the wheelchair and the comparatively fixed position ( Liu and Yu, 2021 ; Chen et al., 2021 ). It is noticeable that the player could achieve vertical acceleration with the arm—sufficient to have a good effect on the discus ( Frossard, 2012 ).…”

“…(2010) , the values of potential energy do not differ much during the performance stages. Given the potential and kinetic energy, the characteristics and nature of the player's throw as a category F33, the throw from the wheelchair, the stability of the mass, the height of the player from the ground, and the acceleration of gravity, the potential energy is greatly affected by the height of the body's center of gravity from the base of the fulcrum ( Chen et al., 2021 ; Frossard, 2012 ).…”

Low-Cost Portable System for Measurement and Representation of 3D Kinematic Parameters in Sport Monitoring: Discus Throwing as a Case Study

“…In particular, the relationship between the duration of the throw and the throwing distance is studied for the evaluation of the discus throwing technique. In [ 18 ], the kinematic characteristics of the jumping discus throwing technique are analysed; the analysis was carried out with two high-speed digital cameras to capture the movement, showing that this kinematic analysis may be used to improve the jumping discus throwing technique by athletes and coaches. Finally, in [ 19 ], individualized optimal release angles for elite discus throwers are studied.…”

Penggunaan Alat Termodofikasi Dalam Menumbuhkan Kompetensi Kognitif dan Psikomotorik Siswa Pada pembalajaran Lempar Cakram

“…Pada teknik putar, atlet melakukan beberapa putaran sebelum melempar cakram dengan sekuat tenaga. Sementara itu, pada teknik lempar lurus, atlet melangkah maju dan melempar cakram menggunakan tangan dominannya (Chen et al, 2021;Hay & Yu, 1995;Leigh et al, 2008;Leigh & YU, 2007). Teknik lempar cakram melibatkan beberapa langkah dan teknik yang harus dikuasai untuk mencapai jarak dan akurasi maksimal.…”