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

Running a marathon - the best way to get fit?

Extracts from this document...

Introduction

Running a marathon - the best way to get fit? What can exercise do for me? Exercise does more then reduce weight, it can improve both our health and fitness, and should involve using as much of the body as possible. Exercise has two main benefits: * Short term these are the effects that happen during the activity itself and also contribute to the long term benefits e.g. the heart rate will increase, which will increase the flow and pressure of the blood. * Long term these are the lasting effects which occur and include the following: o Heart becomes bigger, stronger and capable of pumping more blood. o Lungs get more oxygen to the muscles. o Blood volume increases, therefore more oxygen can be carried. o Muscles increase in size and strength, this is called muscle hypertrophy. The muscle energy stores are also improved. This allows the muscle to work harder and longer. ...read more.

Middle

Most people will tend to have a balance of about 50% of these two types of fibres in their muscle. Experiments have shown that long distance runners tend to have a higher percentage of slow twitch fibres (74%) in their calf muscles. One of the main limiting factors to how fast you can run is the amount of oxygen you can get to your muscles. Oxygen is needed for your muscle cells to release energy. The maximum amount of oxygen you can take in and process is known as your VO2 max. The VO2 max of marathoners is 45% higher than an untrained person. But this advantage is largely genetic and research has shown that training only increases VO2 max by 10-20%. What makes so many Kalenjin runners win marathons? As the Kalenjin runners live 7000ft above see level, their genes have adapted for them to be able to live at high altitude, as oxygen levels in the atmosphere begin to fall. ...read more.

Conclusion

With no glycogen left in their muscles, they have to get the energy to continue running from their body fat. But converting fat into energy is much less efficient than converting glycogen to energy - it requires more oxygen and takes twice as long, slowing a marathoner down to walking pace or even stopping them completely. To overcome this problem you need to put your body into a similar situation a few times before the race, i.e. do a couple of 20 mile runs. Endurance training leads to changes in your body's metabolism so that you become more efficient at using stored energy as well as encouraging your muscles to store more glycogen. Before running a race it is always best to seek medical advice and professional help when it comes to training as this will help to minimise any problems which may occur. Marathons are a great way of raising money for charities, making new friend and training towards a healthier life style. Word count 1025 ?? ?? ?? ?? Ynez Symonds ...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. Skeletal and muscular systems

    Therefore people with more fast-twitch muscle fibres will tend to be better at sports such as sprinting. But people with more slow-twitch muscle fibres will be more talented at sports such as long distance running. Your body contains around 650 muscles in your body and make up roughly half of your body weight.

  2. Physiology Within Sport

    rate, this is because their tidal volumes are not as high as a athlete who trains regularly, the trained athlete also has the assistance of stronger intercostal muscles which allow their lungs to inflate at a much quicker and stronger rate allowing more air into their lungs, whereas with a

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

    Another factor the performer's speed affected was their sprints for the ball when receiving a pass. The team player had thrown the ball however the performer wasn't on target for the ball when they began their sprint which meant they lost possession.

  2. Movement within the Body and the Cardiovascular System

    It receives de-oxygenated blood from the pulmonary vein. The left atrium pumps to take in oxygenated blood, which it then pushes through the bicuspid valve and into the left ventricle. It takes in the blood after systole when it relaxes as the pressure in the atrium decreases more blood is

  1. A.S Personal exercise program for netball

    >58cm Above average: 47-58cm Average: 36 - 46cm Below average: 26 - 35cm Poor: <26cm Strength Standing Broad Jump 1.36 meters I could not find the national averages for the Standing Broad Jump on the internet. If I had more time I would research further to find the averages so I could compare my results to the national performance.

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

    athletes, so this works out to being approximately 1 litre of oxygen being available the body. An increase in cardiac output has huge benefits for trained athletes as they can transport more blood to the working muscles and, therefore more oxygen is available.

  1. Exercise health and lifestyle

    Girls who exercise continuously may disrupt the balance of hormones in their bodies. This can change their menstrual cycles and increase the risk of premature bones and also working their bodies so hard leads to exhaustion and constant fatigue. Arthritis Competitive and highly elite athletes can increase their chances of the wear and tear to the Synovial fluid and membrane.

  2. Information on the Physiology of Exercise

    Skull 4. Sternum 7. Radius 10. Sacrum 13. Phalanges 16. Fibula 19. Coccyx 22. Metatarsus Rear view 2. Mandible 5. Ribs 8. Ulna 11. Carpus 14. Femur 17. Scapula 20. Patella 23. Phalanges Side view 3. Clavicle 6. Humerus 9. Hip bone 12. Metacarpus 15. Tibia 18.

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