![]() ![]() Stimulus may be tactile, visual or auditory. Reaction speed is the quickness of a response given to an external stimulus by a person. Speed in physical education is divided in following major types : Reaction speed in physical education – Roughly 60% fast muscle fiber and 40% slow-twitch fiber are present in an average person. They get drain in a short time.Ī mix of fibre types is present in the muscle of human however the quantity of fast and slow twitch fibres is principally hereditary, so training can not have an effect on the distribution of them however some proof is present that training can force slow-twitch fibres take on characteristics of type IIa fast-twitch fibres. These fibres are used in explosive, powerful and fast actions. They’re also often used for low intensity aerobic exercises when we are very fatigued and the Slow twitch fibres are drained. These fibres can be used for moderate intensity workout. They’re appropriate for explosive physical activities. These are white in colour and muscle contractions produced by them using both aerobic and anaerobic metabolism is fast and strong, though they’re less resistant to fatigue than Slow twitch fibres. 2) Fast-twitch fibers (type IIa and type IIb ) : That’s why these fibres are more effective forĮndurance related physical activities. Their contraction is slow and they resist fatigue more than the fast-twitch fibers. These are red in colour and have a good oxygen supply which helps to maintain the use of the aerobic energy system. In voluntary muscles two types of fibres are present: 1) Slow-twitch fibers : ![]() ![]() The combination of the nervous system and muscles, working collectively to allow movement, is called the neuromuscular system. ![]() In the spinal cord, the lower motor neurons send their axons through nerves in the legs and arms directly to the muscle they control so it contracts. Upper motor neurons ( which have long axon or tail) that go into and through the brain, and into the spinal cord, where they connect with lower motor When we wish to move part of our body, a message is send by the motor cortex to the cerebellum ( the movement coordination is controlled by it) and to a particular neurons (nerve cells), known as upper motor neurons. The voluntary or striated muscles (muscles attached to the skeleton ) are regulated by the parts of the brain generally known as the cerebral motor cortex and the cerebellum. The brain and nervous system control and coordinate the movements of our muscles. Speed in physical education is considered a physical component. Speed has a direct relationship with the nervous system and the muscular system. The distance traveled in particular time by an object is the speed of that object. From other courses we are able to define speed as the capacity of performing a movement or covering a distance as fast as possible. Speed in physical education is defined according to the needs of specific sport. In lots of different sports activities, including team field sports, good speed is also essential as a part of the general fitness profile. Speed is the most important aspect of fitness for some athletes such as Track and Field sprinters, sprint swimmers, cyclists and speed skaters,etc. In many sports speed also have an important role. Speed in physical education is one of the most important fitness components, whether one plays sports or not, everyone wants speed because actions in everyday life situations need to be carried out at the appropriate speed to be able to achieve success (catching a falling object to prevent it’s break, stepping on a piece of paper if it´s being blown by the wind…). Meaning and definition of speed in physical education.
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