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姿勢の割り当てにおける個体間的変動:人間の肥満における潜在的な役割
James A Levine1, Lorraine M Lanningham-Foster, Shelly K McCrady
1Endocrine Research Unit, Mayo Clinic, Rochester, MN 55905, USA. Jim@Mayo.edu
まとめ
座っている肥満者は,痩せた人よりも座っている時間が多く,これは肥満における非運動活動発熱 (NEAT) の役割を示唆しています. NEATを増やすことは,肥満の個人が毎日350カロリー余分に消費するのを助けることができます.
科学分野:
- 生理学 生理学とは
- 肥満に関する研究
- エネルギーバランス エネルギーバランス
背景:
- 肥満は,エネルギー摂取量が支出を上回るエネルギー不均衡の結果である.
- エネルギー支出には,構造的な運動と日々の身体活動の両方が含まれ,これは非運動活動発熱 (NEAT) と呼ばれています.
研究 の 目的:
- 痩せた人と肥満者の活動パターンを比較することによって,肥満におけるNEATの役割を調査する.
- 姿勢と運動の違いがエネルギー支出の格差に寄与するかどうかを判断する.
主な方法:
- 10人の痩身と10人の軽度の肥満の静止型ボランティアを募った.
- NEATを定量化するために,10日間,半秒ごとに身体の姿勢と動きをモニターした.
- グループ間の毎日の座っている時間と全体的な運動パターンの違いを分析した.
主要な成果:
- 肥満の個人は,痩せた個人に比べて,1日平均2時間以上,座っている姿勢で過ごしました.
- 姿勢の割り当ては,体重の変化後も一貫したままであり,生物学的に決定された特性を示唆しています.
- 痩せた個体は,NEATレベルが著しく高かった.
結論:
- 静止的行動と低減したNEATは,肥満に寄与する重要な要因です.
- 肥満の個人は,痩せた人のNEATの行動を採用することで,1日350kcalを消費することがあります.
- NEATをターゲットにすることは,肥満管理のための新しい戦略を提供することができます.
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