沉重的雪的心脏需求
B A Franklin1, P Hogan, K Bonzheim
1Department of Medicine, William Beaumont Hospital, Royal Oak, MI 48009.
JAMA
|March 15, 1995
概括
沉重的雪地开对未经训练的男性造成了显著的心血管和有氧需求,相当于最大运动测试. 自动除雪系统显著减少了这些生理反应.
科学领域:
- 运动生理学 运动生理学
- 心血管健康 心血管健康
- 环境医学 环境医学
背景情况:
- 雪是一项常见的活动,特别是在寒冷的气候.
- 手动清除雪是体力苛刻的,并且与不良心血管事件有关.
研究的目的:
- 为了比较手工雪与使用电动雪机的生理反应.
- 评估不同除雪方法对健康,未经训练的男性的心血管和有氧需求.
主要方法:
- 观察性,受控试验涉及10名健康,未受过训练的男性.
- 试验对象在寒冷的环境 (2°C) 中手动雪,并使用电动雪机.
- 记录了包括心率,血压和氧气吸收在内的生理测量,并与最大运动测试进行了比较.
主要成果:
- 手动雪引起高心率 (最高达97%的最大) 和高静脉血压 (198±17毫米升).
- 随着自动除雪,心肺呼吸和感知到的炼反应显著减少.
- 的生理要求与最大手臂能计和跑步机测试相当.
结论:
- 沉重的手动雪施加大量的心肌和有氧压力,类似于最大限度的运动.
- 这些发现强调了与手动除雪相关的潜在心血管风险,特别是在久坐不动的人群中.
- 自动除雪提供了一种不那么艰苦的替代方案,可能降低与运动有关的心血管事件的风险.
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