高齢者における運動に対する呼吸器反応に対する肥満の呼吸効果: 機能的な肺容量の変化による影響
Abidan Abulimiti1, Bryce N Balmain2, Jessica N Alcala1
1Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital Dallas, Dallas, TX, USA.
Respiratory physiology & neurobiology
|September 5, 2025
まとめ
肥満の高齢者は,重度の運動中に呼吸器の反応が鈍くなります. これは肺の容量,特に肺の終息容量の変化と関連しており,肺の総容量に侵食しています.
科学分野:
- 運動 生理学
- ゲロントロジー
- 肥満に関する研究
背景:
- 肥満は高齢者の心肺機能に影響します
- 運動中の呼吸器の反応を理解することは この集団にとって極めて重要です
研究 の 目的:
- 肥満と肥満のない高齢者の運動呼吸器の反応と機能的な肺容量を調査する.
- 肥満が重度の運動中に 呼吸と二酸化炭素排出の関係に 影響を及ぼすかどうかを判断する.
主な方法:
- 49人の高齢者 (肥満患者と非肥満患者) で,最大限のインクリメンタルサイクリングテストを実施した.
- 呼吸量 (V̇E),二酸化炭素排出量 (V̇CO2),呼吸末肺容量 (EELV),呼吸末肺容量 (EILV) を測定した.
主要な成果:
- V̇E/ V̇CO2の傾きは肥満の高齢者では低く,呼吸器の反応が鈍化したことを示した.
- 呼吸末期肺容量 (EELV) は休息時に低く,運動中に増加した.
- 終息肺容量 (EILV) はグループごとに類似しており,全肺容量 (TLC) への侵入を示唆している.
結論:
- 肥満の高齢者は 激しい運動に対して 呼吸器の反応が鈍くなります
- この鈍化した反応は,肺の容量の変化,特に運動中のEELVの増加と関連しており,TLCに対するEILVを潜在的に制限している.
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