C. 84 per minute 1. **计算逻辑**:心率以分钟为单位(60秒),题目给出的是15秒内心跳21次。需将15秒的次数换算为60秒的次数。 2. **换算方法**:将15秒的次数乘以4(因为60秒 ÷ 15秒 = 4)。 3. **具体计算**:21 × 4 = **84次/分钟**。
结果1 题目【题目】His heart___(速率)was 65 beat s per minute. 相关知识点: 试题来源: 解析 【解析】答案:rate.根据所给的汉语提示“速率”和 空前的heart可知,此处应用名词形式,“速率”的 英语是rate,heart rate"心率”,故填rate. 反馈 收藏 ...
To pump the same amount of blood, your heart needs fewer beats because the volume per beat has increased. Note that extensivestrength trainingthat aims to increase muscle mass elevates the RHR – especially if the aerobic fitness deteriorates simultaneously. ...
Measured in beats per minute, maximum heart rate is the fastest rate at which your heart can beat. Sound simple? “There are a lot of misconceptions about max heart rate,” says Trevor Thieme, C.S.C.S. “You can’t increase it, for example, but it does decrease with age,” regardle...
But having a heart rate lower than 60 bpm doesn’t necessarily mean you have a medical problem. Active people often have lower heart rates because their heart muscles don't need to work as hard to maintain a steady beat. Athletes and people who are very fit can have resting heart rates ...
3【题目】How many times does a _ heart beat pe rminute generally(通常)?【题目】How many times does a _ heart【题目】How many times does a _ heart【题目】How many times does a _ heart【题目】How many times does a _ heart 4How many times does a man's heart beat per minute gene...
As you age, your heart may not be able to beat as fast during times of physical activity or stress as it did when you are younger. Your resting heart rate, however, should not change significantly with normal aging. What is a Dangerous Heart Rate? There are two types of dangerous heart...
Step-by-Step Solution:1. Understanding the Question: The question asks for the normal heart rate in a healthy adult, measured in beats per minute (BPM).2. Definition of BPM: BPM stands f
heart rate, the number of times theventriclesof theheartcontract and relax (that is, beat) per minute or other unit of time. Inhuman beings, the normal resting heart rate among adults ranges from 60 to 100 beats per minute (BPM), whereas the normal resting heart rate for children is high...
Apple has brought EKG technology to the wrist. The watch uses electrodes in its digital crown and back crystal to measure the electrical activity of the heart. After placing a finger on the digital crown, you receive a notification whether your heart is beating normally or if the beat is irr...