フォト電池システムとGRS80位置特異重力加速を使用したジャンプパワー推定の精度向上
J L González-Montesinos1, F G Montesinos2,3, J R Fernández Santos1
1Department of Physical Education, Faculty of Education Sciences, University of Cádiz. 11510 Cádiz, Spain.
Sensors (Basel, Switzerland)
|August 28, 2025
まとめ
スポーツパワーを正確に計算するには,地元の重力の変動を考慮する必要があります. この研究では,標準重力定数とは異なり,局所重力値を使用すると,ジャンプパワーの計算が著しく改善されることがわかりました.
科学分野:
- スポーツ科学
- バイオメカニクス
- 地理学
背景:
- 運動力の計算には通常,標準的な重力値 (g = 9.81 m·s−2) を用いる.
- 高度や緯度によって重力が変化するので,この標準値は不正確です.
- スポーツにおけるパフォーマンスの分析には,正確なパワー測定が不可欠です.
研究 の 目的:
- ジャンプパワー計算の精度を高めるために.
- 地元の重力の変動が電力の推定に与える影響を調査する.
- 標準と局所重力の値を用いた電力計算を比較する.
主な方法:
- 赤外線LEDを搭載した光電池システムは,ジャンプ飛行と地面時間を測定するために使用されました.
- 10人のバレーボール選手が繰り返しジャンプテスト (15,30,60秒) を行った.
- 34箇所の地質基準システム (GRS80) の標準重力値と局所重力値の両方を用いて電力を計算した.
主要な成果:
- 標準値と局所重力値の間で,計算された力の大きな違いが観察されました.
- 標準値を使用すると,より高い高さの場所では,電力を過小評価しました.
- 標準値を使用すると,より低い高さの場所が過大評価を示しました.
結論:
- 実験の地理的な位置は,ジャンプパワーの計算に大きく影響します.
- GRS80のような局所重力値を使用することは,精度を改善するために推奨されます.
- 正確な重力補償は 信頼性の高いスポーツパフォーマンスの指標に不可欠です
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