運動強度の決定におけるプロトコル選択が性差に与える影響
Benedikt Meixner1,2,3, Marcelle Schaffarczyk1, Billy Sperlich1
1Julius-Maximilians-Universität Würzburg, Integrative and Experimental Exercise Science & Training, Department of Sport Science, Judenbühlweg 11, 97082 Würzburg, Germany.
まとめ
性別間の運動強度の違いは、選択された基準最大値とテストプロトコルに依存します。異なるプロトコルは、相対強度におけるこれらの性差の大きさや方向を変化させる可能性があります。
科学分野:
- 運動生理学; スポーツ科学; 人間のパフォーマンス
背景:
- 運動強度は、一般的に最大基準値のパーセンテージを使用して処方されます。; この基準点の選択と、それを決定するために使用されるプロトコルは、観察された性差にバイアスを導入する可能性があります。
研究 の 目的:
- 最大基準点(VO₂maxまたはPPO)を決定するために使用されるプロトコル(ランプまたはステップ)によって、相対運動強度における男女の違いが異なるかどうかを調査すること。
主な方法:
- 50人の訓練されたサイクリスト(男性30人、女性20人)が、サイクルエルゴメーターでランプ段階的および3分間ステップテストの両方を受けました。; 最大酸素摂取量(VO₂max)とピークパワー出力(PPO)は、各プロトコルから決定されました。; 相対強度は、両方のプロトコルのVO₂maxとPPOに基づいて計算され、統計分析は性別とプロトコルの効果を調べました。
主要な成果:
- VO₂に基づく相対強度は、小さな有意なプロトコル効果を示しました。; 乳酸ベースのすべての閾値において、男性はパワーに対して相対的に高い相対強度を示しました。; 性別とプロトコルの交互作用は、基準プロトコルが相対強度における観察された性差に影響を与えることを示しました。
結論:
- 相対運動強度における見かけの性差は、最大基準値の定義と測定方法に依存します。; 同じ相対強度における生理学的負荷は、プロトコルに依存する違いにより、性別間で同等ではない可能性があります。
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