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最終更新日：2024/02/02

長尾秀行

(Hideyuki Nagao)

論文

タイトル
タイトル（英）: Validation of video analysis of marker-less barbell auto-tracking in weightlifting
参照URL: https://researchmap.jp/f1.618/published_papers/36282070
著者
著者（英）: Hideyuki Nagao,Daichi Yamashita
担当区分: 筆頭著者
概要
概要（英）: We determined the marker-less barbell auto-tracking accuracy using the Kanade–Lucas–Tomasi (KLT) algorithm in a digital video for two-dimensional analysis (2D-AT). The position coordinates of the barbell’s right end during multiple loads (60%–90% of one-repetition maximum) of snatch motion in eight participants were recorded using a three-dimensional motion capture system. Simultaneously, the snatch motion was recorded by a digital camera from the right side. Based on the digital video, the center of the barbell’s right end was auto-tracked using the KLT algorithm. Six barbell kinematic variables (forward, backward, and vertical displacement, peak forward, backward, and vertical velocity) were calculated. Intraclass correlation coefficient (ICC) analysis was performed to establish the agreement level between the methods. The Bland–Altman plots and regression were used to examine the agreement between the methods. ICCs of 0.999–0.971 revealed a strong agreement level between the methods. The Bland–Altman plot showed small bias (-0.001–0.001 m, -0.034 –-0.005 m/s). We considered that 2D-AT could obtain barbell position coordinates with sufficient accuracy to discriminate the difference in the lifter’s level and a successful or unsuccessful lift.
出版者・発行元
出版者・発行元（英）: Public Library of Science ({PLoS})
誌名
誌名（英）: PLOS ONE
巻: 17
号: 1
開始ページ: e0263224
終了ページ: e0263224
出版年月: 2022年1月28日
査読の有無: 査読有り
招待の有無
掲載種別: 研究論文（学術雑誌）
ISSN: 1932-6203
DOI URL: https://doi.org/10.1371/journal.pone.0263224
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長尾 秀行

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長尾秀行