The Physiology of Fitness
The Physiology of Fitness – Acute and long term effects on the body
Musculoskeletal System Response to acute exercise
Increased Blood Supply
During exercise your blood supply increases to your muscles, the reason for this is to keep them working and making sure that they don’t get tired too easily.
Increase in Muscle Pliability
During exercise your muscles will also become more pliable because as the muscles contract quickly they will generate heat, this then makes the muscles more pliable, reducing the risk of injury.
Increased Range of Movement
The body’s range of movement during exercise increases because you’re using your muscles to stretch out and allow your joints to move further therefore your range of movement is longer.
Muscle Fibre Micro Tears
During exercise the muscles are put under stress, so much so that it causes little tears to appear in the muscles fibres. The tears cause swelling in the muscle tissue, this then causes pressure on the nerve endings and pain. If the body gets the sufficient rest it needs to repair these fibre tears, then the muscle will be stronger that it was before.
Energy Systems response to acute exercise
Energy systems response to acute exercise happens when the exercise is high in intensity, which is too much for the cardiovascular and respiratory system to deal with. The first response is to use the creatine phosphate energy system. This works in the fast-twitch muscle fibre of the muscles. High energy creatine phosphate compounds which break down extremely quickly create ATP. ATP is where we get the energy from to continue exercising and, however this system only works for the first 10 to 20 seconds of an exercise while giving an effort of 100%.
The lactic acid system provides the energy at the start of any activity, even if the intensity of the exercise is not enough for the aerobic system. If you someone goes for a run or a jog, then most of this exercise is powered by the aerobic system, but at the start
Musculoskeletal System Response to acute exercise
Increased Blood Supply
During exercise your blood supply increases to your muscles, the reason for this is to keep them working and making sure that they don’t get tired too easily.
Increase in Muscle Pliability
During exercise your muscles will also become more pliable because as the muscles contract quickly they will generate heat, this then makes the muscles more pliable, reducing the risk of injury.
Increased Range of Movement
The body’s range of movement during exercise increases because you’re using your muscles to stretch out and allow your joints to move further therefore your range of movement is longer.
Muscle Fibre Micro Tears
During exercise the muscles are put under stress, so much so that it causes little tears to appear in the muscles fibres. The tears cause swelling in the muscle tissue, this then causes pressure on the nerve endings and pain. If the body gets the sufficient rest it needs to repair these fibre tears, then the muscle will be stronger that it was before.
Energy Systems response to acute exercise
Energy systems response to acute exercise happens when the exercise is high in intensity, which is too much for the cardiovascular and respiratory system to deal with. The first response is to use the creatine phosphate energy system. This works in the fast-twitch muscle fibre of the muscles. High energy creatine phosphate compounds which break down extremely quickly create ATP. ATP is where we get the energy from to continue exercising and, however this system only works for the first 10 to 20 seconds of an exercise while giving an effort of 100%.
The lactic acid system provides the energy at the start of any activity, even if the intensity of the exercise is not enough for the aerobic system. If you someone goes for a run or a jog, then most of this exercise is powered by the aerobic system, but at the start