Ryan Newby Unit 4 Assignment 1

 

The Short term effects of exercise on the Cardiorespiratory system

 

Cardio Respiratory- Heart and Breathing

When we exercise, our heart rate increases because we lose oxygen from our body. When we exercise our heart beats faster and our body has to meet the demands of the oxygen needed, so we breathe faster to gain oxygenated blood. Our breathing rate increases so the blood can be pumped around the body and oxygen and blood is delivered to the muscles.

Increased breathing rate

 

When we exercise our body needs more oxygen so we breath faster and get ride of the bi product carbon dioxide. We breathe faster because our body does not have enough oxygen needed, breathing faster gains oxygen to our body and when our body has enough oxygen our breathing rate will decrease.

 

When a fit person exercises the breathing rate is less than a unfit person. The time it takes for a person’s breathing rate to return to normal is called the recovery time,  the fitter you will determine  the shorter your recovery time is.

 

Sweat production and skin reddening

 

The reason why our body sweats is because we need to cool our body down and the reason why our skin reddens is because the blood reaches the end of our skin.

 

 Our body's natural cooling system is by sweating, the sweat is at the end of our skin, when the sweat meets the air it makes our body feel cooler and fresher. Our body needs the sweat to react with the cool air because if not our body will be gaining too much heat.

 

 During exercise our skin will redden because of the fast flow of blood. The blood vessels are opening near the surface of skin and this is why our skin reddens. The temperature of our blood increases the temperature of our body so this is another reason why our skin reddens

 

Increase blood flow

Oxygen attaches to the blood from Hemoglobin which then is delivered to the body's muscles, this means that our body can exercise because of the oxygenated blood in the muscles.

 

 

 Definition; Hemoglobin is the protein molecule in red blood cells that carries oxygen from the lungs to the body's tissues and returns carbon dioxide from the tissues back to the lungs.

The Short term effects of exercise on the musculoskeletal system

 

Every joint in the human body contains synovial fluid, the fluid is thick and it lubricates the joints allowing them to move easily. When exercising the synovium produces more synovial fluid so that is easier for the joints to move. This is like adding oil to a door hinge, it is lubricated to allow movement .

Increased  joint range of movement due to increased in blood flow and increased muscle temperature.

 

When exercising the blood flow increases the blood temperature and muscle temperature so it is easier for the muscles to move and stretch further. Exercising warms up the body and the blood then the body is more able to stretch further because the muscles are warmer.

 

 

Micro tears in muscle fibres, causing the muscle to rebuild itself and become slightly bigger and stronger

 

 

 

 

When we exercise, our muscles have micro fibres which tear and when stretching and lifting they tear and rebuild back bigger and stronger. Weight lifting is the best way to tear the micro fibres however running and walking can tear the fibres. You should not work out on the same muscles too often because there will be no time for rebuild and growth.

 

 

 

 

 

 

 

 

 

 

 

Exercise encourages new bone formation

 

Diet and exercise makes our bones stronger they prevent getting osteoporosis when older our bones need calcium to be stronger and bigger.

 

Doing weight exercises will help you to not get Osteoporosis which is a bone disease the bones that need the most exercise are the long bones which are the arm and leg bones.

 

Increase metabolic activity

 The higher the rate of someone's exercise means that your metabolism will be quicker, this means that your body can digest food quicker.

 If you have a high metabolism this means that you exercise regularly also food / calories are burnt quick where if you have a slow metabolism you wont burn food and calories as quick. By exercising you can speed up your metabolism