1. **题目完整性判断**:题目完整,提供问题及四个明确选项,无需舍弃。 2. **选项分析**: - **A. 70次**:接近静息心率下限,但冷身期初始阶段通常仍在运动后较高水平,未迅速下降至此。 - **B. 90次**:可能处于静息心率范围(60-100),但冷身初期心率应高于静息值。 - **C. 130次**:符合中等强度...
and you may not even notice any symptoms at all. The condition only becomes a problem when it happens often, lasts too long, or causes symptoms such as a pounding pulse, dizziness, shortness of breath, fainting spells,
What causes blood pressure to rise? A number of lifestyle and environmental factors will determine a person's blood pressure, Dr. Mary Ann Bauman, a specialist in internal medicine at Integris Baptist Medical Center in Oklahoma City, told Live Science. Some of these factors, such as age, ...
Slowly press your fingers into this soft spot until you can feel your pulse. It should feel like a steady pulse once or twice per second. This is your popliteal pulse. How hard you need to press to find your pulse depends on many things. You may have to press harder to fi...
Casinger, Lisa
“Football is a very short-term career. Football really prepares you for almost nothing. The only thing I got out of football was the ability to work hard.” says Gales Sayers. So what do you do after your glory days on the field are over? Here’s what one of the top players, Gale...
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By the end of a work day, you have half the amount of nicotine andcarbon monoxidein yourblood. Why does that matter? Carbon monoxide is a chemical in cigarettes, and it crowds out oxygen in yourblood. That causes problems from your muscles to yourbrainbecause they don’t get the oxygen...
A heart monitor will be used to track your heart rate and rhythm if you are in the hospital. You may also need to wear it for several days at home. How is bradycardia treated?You may not need any treatment. Bradycardia is usually treated if it causes symptoms, such as dizziness or fai...