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

Acute Responses to Exercise: Summary Table

Extracts from this document...

Introduction

Acute Responses to Exercise: Summary Response Definition Type of Response Effect of Exercise The benefit of this response / why it happens How it occurs Ventilation The amount of air breathed in and out per minute. The product of Tidal Volume (TV) x Respiratory Rate (RR) Respiratory Increases To increase the volume of oxygen in the lungs that can be diffused into the blood and transported to the working muscles Greater contraction of the intercostal muscles and diaphragm Diffusion The movement of oxygen and carbon dioxide from an area of high concentration to an area of low concentration. Occurs in the alveoli of the lungs and the muscle capillaries. Respiratory and Circulatory Increased Capacity In order to increase the transfer or oxygen into the blood stream and delivery to the muscle cells. Also, to dispose of carbon dioxide which is produced as a result of the aerobic energy system Caused by an increased surface area of the alveoli and muscle tissue Cardiac Output (Q) ...read more.

Middle

The muscle pump (muscular contractions) 2. The respiratory pump (diaphragm increases abdominal pressure) ? veins in thorax and abdomen emptied towards heart 3. Veno constriction (constrictions of the veins) Redistribution of blood flow The redirection of blood away from areas where it is not needed (e.g. spleen, kidneys) to areas where it is (e.g. working muscles) Cardiovascular Redistribution To increase the amount of oxygen being delivered to the organs that need it during exercise (e.g. working muscles) Increasing blood flow to the skin assists in the regulation of body temperature through heat exchange with environment Vasoconstriction occurs in arterioles supplying oxygen to the inactive areas and vasodilation occurs in arterioles supplying oxygen to the working muscles Oxygen Consumption (VO2) / Arterio-Venous Oxygen Difference (A-VO2 diff.) The volume of oxygen that can be taken up and used by the body. The difference in oxygen concentration in the arterioles compared to the venules. Cardiovascular Increases To increase the amount of oxygen that is delivered and used by the working muscles Caused by an increase in cardiac output and the amount of oxygen extracted ...read more.

Conclusion

the muscle fibres it stimulated Muscular Increased number recruited / increase frequency of messages To enable the correct number of muscle fibres to be recruited depending on the intensity of the activity ? ?all or nothing principle?. If a motor unit receives the impulse, all its fibres will contract By electrical impulse signals that are sent from the central nervous system (brain and spinal cord) Energy Substrates The chemicals that are required to resynthesis ATP i.e. PC, glycogen, triglycerides Muscular Decrease Once ATP stores are depleted, PC, muscle glycogen and muscle triglycerides are all used to resynthesise ATP and so they get used up As a result of the three energy systems which are used to resynthesise ATP Body Temperature A change in the internal temperature of the body Muscular Increases until it is controlled by 1. Sweat glands produce sweat 2. Increased blood flow to skin (via vasodilation) Mechanisms work to prevent an increase in core body temperature. (However, during high intensity, blood vessels vasoconstrict which hinders heat transfer) Heat is a by-product of converting chemical energy into mechanical energy ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Anatomy and 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 GCSE Anatomy and Physiology essays

  1. Investigating the Short-Term Effects of Exercise on the Body.

    after (b.p.m) 64 b.p.m 64 b.p.m 64 b.p.m - RECOVERY RATE 4 mins. 4 mins. 4 mins. 2nd Intensity of Exercise - 30 Metre sprint Measurement First Effort Second Effort Average Resting Pulse (b.p.m) 64 b.p.m 64 b.p.m 64 b.p.m 1 min. after (b.p.m) 102 b.p.m 106 b.p.m 104 b.p.m 2 mins.

  2. Temperature regulation practical - Homeostasis.

    After exercise though, the body will restore itself to the original temperatures, as part of maintaining the balance. Variables Independent: exercise Dependent: changes in the internal and external body temperatures Controlled: type of exercise, duration of exercise, same thermometer used, same exercise 'environment' (in the corridor outside the laboratory), same temperature taking environment (in the lab).

  1. Cardiovascular and Respiratory Responses to Submaximal Exercise under Aerobic Conditions

    and so maintaining a homeostatic state. After this sudden increase in ventilation, a brief pause is noticed prior to a further increase to steady state exercise. It also can be seen that as sub-maximal exercise is stopped there is an abrupt decrease in respiration followed by a gradual increase to normal resting values.

  2. Conduct the Queens Step test (provided) for all 4 students. Record the resting heart ...

    As another response of training, the time it takes for an individual's heart rate to return to resting state after exercise decreases. Because the students resting heart rate was fairly poor for her age, she has a lot of room for improvement, and this training program will allow that to occur.

  1. Personal Exercise Programme

    96 - pulse rate after three minute = 82 - pulse rate after four minute = 80 week 6 went well for me I stayed at the same intensity and felt an improvement in my performance and I felt less tired at each session, as a whole I improved my

  2. How muscles and joints are used by different sportspeople.

    sliding filament mechanism. This occurs through the length of the muscle, generating force at the musculo-tendinous junction, causing the muscle to shorten and changing the angle of the joint. Eccentric Contractions During an eccentric contraction, the muscle lengthens while under pressure due to an opposing force being greater than the force generated of the muscle.[).

  1. Onset of Blood Lactate Accumulation

    Tesch (1978) identifies that it is beneficial for an athlete to work as close to their lactate threshold to gain maximum performance, although must not cross lactate threshold as will suffer from fatigue and muscle soreness. An important issue mentioned by Sj�din and Jacobs, is that the physiological build of a body

  2. Negative effects of exercise Exercise is also known for its vast results ...

    elite athletes like dancers, ice skaters, gymnasts, jockeys, and wrestlers, in their task to excel at their sport. Exercise addiction is common in anorectics and bulimics, since they think that excessive exercise can help them get thin. Bulimics will often use compulsive exercise as a method of purging.

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