血流の制限と最大限の努力で膝の伸縮と屈折の際に氷の適用に対する神経筋肉の反応の比較:ランダム化,制御,クロスオーバー試験
Clifton Holmes1,2, Bjoern Hornikel3, Abby R Fleming4
1USDA-ARS Arkansas Children's Nutrition Center, Little Rock, Arkansas, United States.
まとめ
血流制限 (BFR) と最大足の収縮時の氷の適用は,筋肉の活性化を変化させませんでした. しかし,BFRは,コントロールと氷の条件と比較して,メカニカル出力の減少につながりました.
科学分野:
- 運動生理学 運動生理学
- スポーツ科学 スポーツ科学
- バイオメカニクス バイオメカニクス
背景:
- 血流制限 (BFR) と氷の適用は,運動に対する生理学的反応に影響を与えるために使用される一般的な介入です.
- 筋肉のパフォーマンスと神経筋肉の活動に対する急性効果を理解することは,トレーニングとリハビリテーションプロトコルを最適化するために不可欠です.
研究 の 目的:
- 最大限の努力の足の運動中にBFRと氷の適用が筋肉のパフォーマンスと神経筋肉の徴募に及ぼす急性効果を調査する.
- これらの効果を対照条件と比較するために.
主な方法:
- 15人のレジスタンス訓練を受けた個人は,イソキネティック・ダイナモメーターで最大限の努力で膝の伸縮と屈曲を行いました.
- 3つの条件がテストされました:コントロール (CON),氷の適用 (ICE),80%の閉塞圧で血流制限 (BFR).
- エレクトロミオグラフィー (EMG) は,筋の募集の平方根平均 (RMS) を測定し,ピークトルク (PT),レプ1回の作業 (WK),レプ1回の平均出力 (PWR) を測定した.
主要な成果:
- CON,ICE,およびBFR条件の間では,筋肉活性化 (RMS) の有意な差異は観察されなかった.
- 血流制限 (BFR) は,CONとICEと比較して,脚の伸縮と屈折の両方に対して,メカニカルアウトプット (PT,WK,PWR) を著しく低下させた.
- 筋肉の募集は,セットごとに,特に右足で違いを示し,時間の経過とともに疲労の影響を示した.
結論:
- 足の最大収縮時の血流制限 (BFR) は,同様の筋肉の活性化につながりますが,コントロールと氷の適用と比較して機械的出力が低下します.
- 氷の適用は,この文脈で急性筋肉のパフォーマンスや神経筋肉のリクルートに有意な影響を与えるようには見えません.
- 性能向上または特定のトレーニング目標のための最適なBFRパラメータを探求するためのさらなる研究は可能である.
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