人材検索について
ハイパフォーマンススポーツに係る研究者やサポートスタッフ等の人材情報の検索ができます。HPSCに現在勤務する職員（HPSCスタッフ）、HPSCの勤務経験者（HPSC OB/OG）、HPSCの各種事業における協力者（HPSC事業協力者）のカテゴリーに分けております。人材データベースへのご登録はHPSCからご依頼させて頂いた方のみとしております。
最終更新日：2026/06/25
鍔木 悠里奈
ツバキ ユリナ
(Yurina Tsubaki)
論文
- タイトル
- タイトル（英）
- Motor synergy organization during fatiguing single-leg heel-rise in young ballet dancers and non-dancers.
- 参照URL
- https://researchmap.jp/YurinaTsubaki/published_papers/54245167
- 著者
- 著者（英）
- Yosuke Tomita,Yurina Tsubaki,Mayumi Kuno-Mizumura
- 担当区分
- 概要
- 概要（英）
- BACKGROUND: The uncontrolled manifold (UCM) framework decomposes inter-trial kinematic variability into task-stabilizing (VUCM) and task-destabilizing (VORT) components to quantify motor synergy organization. Whether long-term ballet training influences motor synergy structure during fatiguing lower-limb tasks remains unclear. RESEARCH QUESTION: To what extent is long-term ballet practice related to the motor synergy organization that stabilizes the center of mass (COM) during a repetitive, fatiguing single-leg heel-rise task, compared with non-dancers? METHODS: Fourteen female ballet dancers (age: 23.3 ± 3.2 years; 14.9 ± 6.8 years of experience) and 15 female controls (age: 22.3 ± 2.4 years) performed a single-leg heel-rise task to volitional failure. Three-dimensional whole-body kinematics were recorded. UCM analysis was applied to the first and last 20 trials using 10 segment elevation angles and toe position coordinates as elemental variables and sagittal COM position as the performance variable. The synergy index (SI), VUCM, and VORT were computed across five normalized movement phases. Group differences were analyzed using linear mixed-effects models. RESULTS: The ballet group showed greater SI than the control group across all movement phases in both task blocks (ballet: 0.962-0.981; control: 0.831-0.931), with significant main effects of group at all phases (p < 0.05) and group-by-phase interactions at 60-80% and 80-100%. This was primarily driven by smaller VORT in the ballet group (significant group effect at all phases, p < 0.05). SIGNIFICANCE: Ballet practice is associated with reduced task-destabilizing variability during fatiguing heel-rise tasks, suggesting that ballet training may refine intersegmental coordination for COM stabilization.
- 出版者・発行元
- 出版者・発行元（英）
- 誌名
- 誌名（英）
- Gait & posture
- 巻
- 130
- 号
- 開始ページ
- 110258
- 終了ページ
- 110258
- 出版年月
- 2026年6月10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
- DOI URL
- https://doi.org/10.1016/j.gaitpost.2026.110258
- 共同研究・競争的資金等の研究課題