40kmサイクリングタイムトライアルでのW'-キネティクスによる臨界力の実験室とフィールドからの測定の関連
D Luke Wilkins1,2, Julie E Taylor3, Robert W Pettitt4
1Campus Recreation/Outdoor Recreation, Utah Tech University, St. George, Utah, USA.
International journal of exercise science
|September 5, 2025
まとめ
実験室およびフィールドベースの3分間の全力 (3MT) 試験では,同様の臨界電力 (CP) と曲率定数 (W') が得られますが,ピーク電力 (Pmax) は異なります. これらの生理学的パラメータは40kmのタイムトライアルパフォーマンスを正確に予測し,W'は特に影響力があります.
科学分野:
- 運動 生理学
- スポーツ科学
- パフォーマンス分析
背景:
- 正確な生理学的パラメータの推定は,耐久性能を予測するために不可欠です.
- 3分間のオールアウト (3MT) テストは,主要なサイクリング性能指標を評価するための一般的なプロトコルです.
- 実験室とフィールドベースの3MTプロトコルの比較は,実用的な適用のために不可欠です.
研究 の 目的:
- 実験室およびフィールドベースの3MTプロトコルから派生したピークパワー (Pmax),クリティカルパワー (CP),および曲率定数 (W') を比較する.
- サイクリストの40kmタイムトライアル (TT) のパフォーマンスを予測するためのこれらの生理学的パラメータの影響を調査する.
主な方法:
- 9人の男性サイクリストが 実験室とフィールドでの 3MT プロトコルを 単独で完了しました
- リアルなパフォーマンスを評価するために40kmのタイムトライアル (TT) が実施されました.
- パラメータを比較し,予測関係を評価するために統計的分析が用いられました.
主要な成果:
- 実験室とフィールドの3MTプロトコルでは,臨界電力 (CP) と曲率定数 (W') が類似した (p > 0. 05).
- ピークパワー (Pmax) は,環境と生体力学的差異による可能性が高い (p < 0. 05).
- CP,W',Pmaxは,TTの性能を予測する高い精度 (R2 > 0. 90) を示し,W'は最も強い予測能力を示した.
結論:
- 実験室とフィールドの両方の3MTプロトコルは,サイクリストのCPとW'の信頼性の高い見積もりを提供します.
- Pmaxは,試験環境と生体力学により敏感である可能性があります.
- CP,W',Pmaxは40kmのTTの性能を予測する重要な指標であり,より長い期間でのW'の重要性を強調しています.
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