Heart rate: What's normal? - Mayo Clinic
2022年10月8日 · A normal resting heart rate for adults ranges from 60 to 100 beats per minute. Generally, a lower heart rate at rest implies more efficient heart function and better cardiovascular fitness. For example, a well-trained athlete might have a normal resting heart rate closer to 40 beats per minute.
How fit are you? See how you measure up - Mayo Clinic
2024年1月18日 · The target heart rate zone is a heart rate range that gives your heart and lungs a good workout. This zone ranges from 50% to 85% of the maximum heart rate (MHR) for your age. Aim for 50% to 70% of MHR when you do moderately intense activities and 70% to 85% of MHR when you do vigorous activities.
Exercise intensity: How to measure it - Mayo Clinic
2023年8月25日 · The maximum heart rate is 176.5. Next, check your resting heart rate first thing in the morning. Say it's 80 beats per minute. Calculate your HRR by subtracting 80 from 176.5. Your HRR is 96.5. Multiply 96.5 by 0.7 (70%) to get 67.5, then add your resting heart rate of 80 to get 147.5. This is your target heart rate at 70% intensity.
Blood pressure chart: What your reading means - Mayo Clinic
2024年2月28日 · The top number measures the pressure in the arteries when the heart beats. Bottom number, called diastolic pressure. The bottom number measures the pressure in the arteries between heartbeats. The American College of Cardiology and the American Heart Association divide blood pressure into four general categories.
Bradycardia - Symptoms and causes - Mayo Clinic
2024年12月13日 · Bradycardia (brad-e-KAHR-dee-uh) is a slow heart rate. The hearts of adults at rest usually beat between 60 and 100 times a minute. If you have bradycardia, your heart beats fewer than 60 times a minute. Bradycardia can be a serious problem if the heart rate is very slow and the heart can't pump enough oxygen-rich blood to the body.
Tachycardia - Symptoms and causes - Mayo Clinic
2023年12月15日 · In a healthy heart, this signaling process usually goes smoothly. The resting heart rate is typically 60 to 100 beats a minute. But in tachycardia, something causes the heart to beat faster than 100 beats a minute. Risk factors. In general, things that may raise the risk of irregular heart rhythms that commonly cause tachycardia include ...
Ejection fraction: An important heart test - Mayo Clinic
2023年2月17日 · The heart contracts and relaxes. When the heart contracts, it pumps out — ejects — blood from the two lower heart chambers, called ventricles. When the heart relaxes, the ventricles refill with blood. No matter how forceful the contraction, the heart can never pump all the blood out of a ventricle.
Supraventricular tachycardia - Symptoms and causes - Mayo Clinic
2024年3月7日 · In a healthy heart, this heart signaling process usually goes smoothly. The heart usually beats about 60 to 100 times a minute at rest. But in SVT, the heart beats faster than 100 beats a minute. The heart may beat 150 to 220 times a minute. Risk factors
Mayo Clinic Minute: How to hit your target heart rate
2019年8月6日 · That should get your heart rate up to the target range, and studies show that the level of exertion we feel correlates quite well with our heart rate. "We're getting good blood flow. We're training our heart muscle to work more efficiently, and … actually strengthening it.
Tachycardia - Diagnosis and treatment - Mayo Clinic
2023年12月15日 · Slowing a fast heart rate. A fast heart rate may correct itself. But sometimes medicine or other treatments are needed to slow down the heartbeat. Ways to slow a fast heart rate include: Vagal maneuvers. Simple but specific actions such as coughing, bearing down as if passing stool or putting an ice pack on the face can help slow down the heart ...