Heart Rate

Heart Rate is the speed of the heartbeat measured by the number of contractions (beats) of the heart per minute (bpm). The heart rate can vary according to the body's physical needs, including the need to absorb oxygen and excrete carbon dioxide. It is usually equal or close to the pulse measured at any peripheral point. Activities that can provoke change include physical exercise, sleep, anxiety, stress, illness, and ingestion of drugs.

Measurement

The traditional method of measuring heart rate is to palpate a peripheral pulse, such as the radial pulse. This method is not always accurate, as the peripheral pulse may be difficult to palpate in certain individuals, such as those with a low body temperature.

An alternative method of measuring heart rate is through the use of an electrocardiogram (ECG or EKG). This method provides a visual representation of the heart's electrical activity, which can be used to calculate the heart rate.

Factors Influencing Heart Rate

Several factors can influence heart rate, including:

• Age: The heart rate decreases as a person ages.
• Physical Fitness: Athletes often have a lower resting heart rate due to the increased efficiency of their cardiovascular system.
• Stress and Emotion: Both can cause an increase in heart rate.
• Medication: Certain medications can affect heart rate, either increasing or decreasing it.

Health Implications

A heart rate that is too fast, too slow, or irregular can be a sign of a heart condition. Conditions such as arrhythmia, tachycardia, and bradycardia can all affect the heart rate. It is important to seek medical attention if you experience symptoms such as chest pain, shortness of breath, or fainting.

Heart Rate Resources
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