震えからリラックスへ: 肥満は筋肉の収縮機能を乱します
L Cesanelli1, H Degens1,2, P Minderis1
1Institute of Sport Science and Innovations, Lithuanian Sports University, Kaunas, Lithuania.
Physiological reports
|February 16, 2026
まとめ
肥満は神経筋肉の機能を低下させ,筋肉の力を減らし,マウスとヒトの両方の筋肉の収縮を遅らせます. これは,体量に対する相対的な強さと,全体的な身体能力に影響します.
科学分野:
- 神経筋肉の生理学 神経筋肉の生理学
- 肥満に関する研究
- 翻訳科学とは,翻訳科学である.
背景:
- 肥満は,神経筋機能に影響を与える状態としてますます認識されています.
- 体重に対する筋肉の強さの低下は,肥満の既知の結果である.
- 肥満が筋肉の収縮のダイナミクスに与える影響については,さらなる調査が必要である.
研究 の 目的:
- 肥満が筋肉力の生成に及ぼす影響を調査する.
- 肥満が筋肉の収縮とリラックスダイナミクスを変化させるかどうかを判断する.
- ネズミから人間への神経筋機能に対する肥満の翻訳的影響を評価する.
主な方法:
- 制御 (CN) とダイエット誘発肥満 (OB) の男性マウスの拡張指 (EDL) とソレウス (SOL) 筋肉の収縮性特性を試験管内で評価した.
- 正常体重 (CN) とI級肥満 (OB) の静止型男性における足底屈曲器の性能を評価し,最大自発的対比収縮とダイナミック・カール・ライス・テストを用いた.
- 両種における肥満と対照群の間の比重力,力発達の速度,およびリラックス運動を比較した.
主要な成果:
- 肥満マウスは,対照群と比較して,特定の力が低く,EDLとSOLの両方の筋肉の力の発達とリラックス率が遅かった.
- 肥満の男性では,トルク発達の速度が低下し,足首の屈 flexors のリラクゼーション運動が長引くことが示されました.
- 肥満の男性には,最大自発的対比トルク比に対するより高い体量があり,小牛の上昇段階が遅くなるのに寄与しました.
結論:
- 肥満は,筋肉の力生成能力に悪影響を及ぼします.
- 肥満は筋肉の収縮運動を遅らせ,力の生成とリラックスの両方に影響を及ぼします.
- これらの発見は,種間の肥満に関連した重要な神経筋肉の障害を強調しています.
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