• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

effects of exercise on cardiovascular system

Extracts from this document...


Effects of exercise on cardiovascular system Exercise can effect the cardiovascular system in both long-term and short-term ways. The short-term effects are: * Heart rate increases * Stroke volume increases * Cardiac output increases * Blood pressure increases * Blood redistributed The heart rate increases depending on the intensity of exercise you are carrying out. The heart also prepares itself before exercise. Just before exercise is carried out the heart rate will rise this is known as the anticipatory rise. This is caused by a release of hormones such as adrenaline, which then causes the SA node to increase the heart rate. After exercise the heart rate takes a while to return to its resting level, this is the body's recovery period. During this phase, the heart rate must remain slightly elevated in order to get rid of the body's waste products such as lactic acid. The stroke volume is the volume of blood pumped out of the heart with each contraction. ...read more.


During high intensity exercise both systolic and diastolic pressure rise due to increased resistance of blood vessels. This is cause by muscles squeezing veins. Blood flow changes once exercise is taking place. During exercise the blood flow is changed from being directed at the liver and kidneys to the most needed areas. This is because the working muscles need more oxygen so more blood is needed to meet this demand. So this demand can be met and the muscles and keep working efficiently at a high impact the blood is redirected from the liver, kidneys, and digestive system to the muscles that are in demand of oxygen. The long-term effects are: * Decrease in blood pressure/// * Hypertrophy of the heart * Increase in thickness of the myocardium * Increase in stroke volume at rest * Bradycardia * Increase in cardiac output * Decrease in resting heart rate Cardiac hypertrophy is the enlargement of the heart. ...read more.


are so efficient they do not need to beat any faster as there bodies are efficient enough to deal with only 40bpm. Cardiac output is increased due to a larger volume of blood therefore the heart doesn't have to work as hard as it did before and the cardiac output is then decreased. Resting heart rate is effected by exercise because the muscles in the body demand more oxygen. This means the heart needs to work harder to ensure enough oxygen is delivered to the blood so the oxygen can be carried to the working muscles and the carbon dioxide and lactic acid are removed. Therefore the more you exercise the stronger the heart will become and won't have to work as hard when it is at rest lowering the resting heart rate. Therefore the resting heart rate is decreased and it is not necessary for the heart to beat as quick as it did, now the heart is larger it can beat slower but still achieve pumping the same amount of blood. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Anatomy & Physiology section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Anatomy & Physiology essays

  1. Cardiovascular responses When or before exercising, a number of changes happen within the ...

    reduce blood pressure but this is counteracted by the increase in blood pressure caused by increased cardiac output. Exercise raises systolic pressure, but there is only a slight change in diastolic pressure. Straight after exercise there will be a fall in systolic pressure as the skeletal muscular pump is no longer pumping blood from the muscles to the heart.

  2. The Long and Short Term Effects of Exercise

    The cardiac muscles work hard during exercise to pump enough blood around the body and various other muscles work depending on the type of exercise being carried out. Muscles also rely on oxygen to function effectively and respire in order to produce energy.

  1. Skeletal System and Joints

    strength of the skull Is important in almost every combat sport e.g. boxing as in boxing a lot of the punches landed are to the head in an attempt to knock the opponent dizzy, the mandible also needs considerable strength as the 'knockout punch' is a punch in the chin

  2. Discuss the short term and long-term effects of exercise on the cardiovascular system, the ...

    This includes the skin to increase heat loss and the muscles to increase the blood flow, in order to increase aerobic respiration. The short term effects of exercise on the cardiovascular system are, increased heart rate, which returns to normal after a period of rest and increased blood flow and

  1. Looking at the skeletal and muscular system and the use of this system during ...

    Contractions that permit the muscle to shorten are referred to as concentric contractions. An example of this would be raising the weight in a bicep curl. Eccentric Contractions When muscles are working they often are lengthening. Examples of this are walking, when the quadriceps (knee extensors)

  2. The body's response to exercise- Regular aerobic activity results in a type of cardiac ...

    Increased vanous return Veins solve the potential problem related to the low blood pressure of venous blood. Values spaced at short intervals within the vein permit one way blood flow back to the heart. Veins compress because of low venous blood pressure or in the case of steady state exercise, muscular contractions.

  1. Physiology Within Sport

    are able to diffuse much more oxygen because endurance training increases the lungs volumes especially the tidal volume, and the lungs are able to take on more air because the intercostal muscles have generated more stronger muscular contractions to allow a much more efficient inhalation and deflation, because if the

  2. A level Project, Personal Exercise Program on Netball.

    The performer used the gym to improve their weaknesses. Week 10: 12th Nov 07 F Performer carrying out plan to improve major weakness. The performer used the gym to improve their weaknesses. Week / Date Section What I intend to do What I did / achieved Week 11: 19th Nov 07 F Performer carrying out plan to improve major weakness.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work