Monday 17 March 2014

Cardiovascular responses to acute exercise

This week we learned about the cardiovascular responses of acute exercise. These are basically the changes that occur in the heart and blood vessels when we take part in a single exercise session.

Heart rate anticipatory response

Even before we start to exercise our heart begins to beat faster. This is termed the anticipatory response, and is exactly what it sounds like - the anticipation of the heart to the exercise that is about to happen, by increasing its number of beats per minute. Our body does this in order to begin supplying more oxygen and nutrients to the working muscles. This response occurs through the release of adrenaline from the brain, which stimulates the nerve impulses in the heart and make it begin to beat faster. This is known as the fight or flight response, where the body is preparing for the activity it might be expected to go through.

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