极地徒步旅行期间女性的能量平衡 - - POWER研究
Pierre Bourdier1,2, Jessica Devitt3, Susan Gallon4
1Université de Strasbourg, CNRS, IPHC UMR7178, Strasbourg, France.
Physiological reports
|June 30, 2025
概括
女北极滑雪者在极地探险期间经历了显著的能量赤字,由于缺乏足够的食物摄入而失去体重,尽管能量消耗增加了. 这凸显了极端环境中非运动员女性在能量平衡方面的挑战.
科学领域:
- 人体生理学 人体生理学
- 环境医学 环境医学
- 运动科学 运动科学 运动科学
背景情况:
- 极地探险带来极端的生理挑战,往往导致负能量平衡.
- 对非专业人士,特别是女性进行此类探险的研究有限.
- 了解北极探险期间女性的能量平衡调节至关重要.
研究的目的:
- 在北极探险期间调查非运动员女性成年人的能量平衡调节.
- 量化每日能源总支出 (TDEE) 和与活动相关的能源支出 (AEE).
- 评估身体组成和压力标志物的变化.
主要方法:
- 11名非运动员女性完成了为期7天的北极滑雪探险.
- 休息代谢率 (RMR),脂肪质量 (FM) 和无脂肪质量 (FFM) 在远征前和后被测量.
- 总每日能源支出 (TDEE) 和与活动相关的能源支出 (AEE) 用双重标记的水 (DLW) 进行评估.
- 身体活动,皮肤温度和唾液皮质醇在整个过程中都被监测.
主要成果:
- 参与者显示TDEE为18.67MJ/d,AEE显著增加.
- 体重减少1.67公斤,主要是由于脂肪质量损失 (-1.26公斤),表明能量平衡负.
- 食物摄入量不足以满足远征的高能量需求.
结论:
- 非运动员的女性在苛刻的远征中可以大幅增加能量消耗.
- 不足够的热量摄入,而不是不充分的消耗,导致能量赤字和体重减轻.
- 需要进一步的研究,以了解极端环境中限制食品消费的因素.
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