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June 6, 2026Journal of the Korea Society of Computer and Information

Convex Hull-Based Pattern Analysis for Evaluating Dynamic Stability of Ballistic Movements Using a Single Video: Focusing on the One-Arm Kettlebell Swing

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Authors

JYJun-Hyeok YunIKIl-Ju KoDNDong-Hyun Nam

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Overview

Randomized trial evaluates dynamic stability in kettlebell swings, suggesting video analysis can assess performance effectively.

Key Points

  • This study aims to propose and validate a method for diagnosing the dynamic stability of one-arm kettlebell swings using a single video.
  • Analyzed trajectories by dividing joint point estimations into periodic sequences after preprocessing.
  • Defined stability by the reproducibility of patterns based on expert distributions.
  • Evaluated data from 12 expert videos and 24 novice videos.
  • All novice participants' lower body movements were deemed unsuitable, indicating key stability indicators.
  • The upper body showed a fit rate of 23.6%, while the entire body showed 8.1%.
  • The analysis distinguished between stable and unstable states, providing practical insights for coaching.

Cite This Study

Yun et al. (2026) studied this question.

synapsesocial.com/papers/6a23ba3c71a5da9775e75efahttps://doi.org/10.9708/jksci.2026.31.05.133
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