@article{ART003338903},
author={Jun-Hyeok Yun and Il-Ju Ko and Dong-Hyun Nam},
title={Convex Hull-Based Pattern Analysis for Evaluating Dynamic Stability of Ballistic Movements Using a Single Video: Focusing on the One-Arm Kettlebell Swing},
journal={Journal of The Korea Society of Computer and Information},
issn={1598-849X},
year={2026},
volume={31},
number={5},
pages={133-148}
TY - JOUR
AU - Jun-Hyeok Yun
AU - Il-Ju Ko
AU - Dong-Hyun Nam
TI - Convex Hull-Based Pattern Analysis for Evaluating Dynamic Stability of Ballistic Movements Using a Single Video: Focusing on the One-Arm Kettlebell Swing
JO - Journal of The Korea Society of Computer and Information
PY - 2026
VL - 31
IS - 5
PB - The Korean Society Of Computer And Information
SP - 133
EP - 148
SN - 1598-849X
AB - This study proposed and validated a cycle-specific pattern analysis method of Convex Hull centroid trajectories to diagnose the dynamic stability of the one-arm kettlebell swing using only a single video.
Joint estimation errors occurring in uncontrolled recording environments were buffered through preprocessing and normalization steps such as outlier removal and smoothing, after which the trajectories of the full body, upper body, and lower body were constructed on a per-cycle basis.
Stability was defined as the inter-cycle reproducibility of the patterns, and suitability was evaluated against the expert reference distribution. As a result of analyzing 12 expert videos with 96 valid cycles and 24 layperson videos with 161 valid cycles, the lower body across all layperson cycles was judged as unsuitable. This confirmed that the reproducibility of pelvic propulsion is a key indicator for distinguishing proficiency. The full body showed a suitability rate of 8.1 percent, while the upper body showed 23.6 percent. Consequently, by clearly distinguishing between fixed and unstable pattern states through internal reproducibility analysis, this study provides a practical basis for on-site sports coaching.
KW - One-Arm Kettlebell Swing;Convex Hull;Dynamic Stability;Pose Estimation;Cycle Reproducibility;Pattern Analysis
DO -
UR -
ER -
Jun-Hyeok Yun, Il-Ju Ko and Dong-Hyun Nam. (2026). Convex Hull-Based Pattern Analysis for Evaluating Dynamic Stability of Ballistic Movements Using a Single Video: Focusing on the One-Arm Kettlebell Swing. Journal of The Korea Society of Computer and Information, 31(5), 133-148.
Jun-Hyeok Yun, Il-Ju Ko and Dong-Hyun Nam. 2026, "Convex Hull-Based Pattern Analysis for Evaluating Dynamic Stability of Ballistic Movements Using a Single Video: Focusing on the One-Arm Kettlebell Swing", Journal of The Korea Society of Computer and Information, vol.31, no.5 pp.133-148.
Jun-Hyeok Yun, Il-Ju Ko, Dong-Hyun Nam "Convex Hull-Based Pattern Analysis for Evaluating Dynamic Stability of Ballistic Movements Using a Single Video: Focusing on the One-Arm Kettlebell Swing" Journal of The Korea Society of Computer and Information 31.5 pp.133-148 (2026) : 133.
Jun-Hyeok Yun, Il-Ju Ko, Dong-Hyun Nam. Convex Hull-Based Pattern Analysis for Evaluating Dynamic Stability of Ballistic Movements Using a Single Video: Focusing on the One-Arm Kettlebell Swing. 2026; 31(5), 133-148.
Jun-Hyeok Yun, Il-Ju Ko and Dong-Hyun Nam. "Convex Hull-Based Pattern Analysis for Evaluating Dynamic Stability of Ballistic Movements Using a Single Video: Focusing on the One-Arm Kettlebell Swing" Journal of The Korea Society of Computer and Information 31, no.5 (2026) : 133-148.
Jun-Hyeok Yun; Il-Ju Ko; Dong-Hyun Nam. Convex Hull-Based Pattern Analysis for Evaluating Dynamic Stability of Ballistic Movements Using a Single Video: Focusing on the One-Arm Kettlebell Swing. Journal of The Korea Society of Computer and Information, 31(5), 133-148.
Jun-Hyeok Yun; Il-Ju Ko; Dong-Hyun Nam. Convex Hull-Based Pattern Analysis for Evaluating Dynamic Stability of Ballistic Movements Using a Single Video: Focusing on the One-Arm Kettlebell Swing. Journal of The Korea Society of Computer and Information. 2026; 31(5) 133-148.
Jun-Hyeok Yun, Il-Ju Ko, Dong-Hyun Nam. Convex Hull-Based Pattern Analysis for Evaluating Dynamic Stability of Ballistic Movements Using a Single Video: Focusing on the One-Arm Kettlebell Swing. 2026; 31(5), 133-148.
Jun-Hyeok Yun, Il-Ju Ko and Dong-Hyun Nam. "Convex Hull-Based Pattern Analysis for Evaluating Dynamic Stability of Ballistic Movements Using a Single Video: Focusing on the One-Arm Kettlebell Swing" Journal of The Korea Society of Computer and Information 31, no.5 (2026) : 133-148.
