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| 1. |
Explain the effect of exercise on muscular system? |
| Answer» Effects of Exercises on Muscular System : Following changes in our muscular system can be seen if exercises are done on regular basis :\tEfficiency in the Movements of Muscles.\tThe movements of muscles become efficient and smooth. The movements during different activities become attractive.\tChange in the Connective Tissue. The connective tissue, which connects fibres, becomes powerful. These tissues can bear stress of strenuous activity and can be extended up to some degree.\tControls Extra Fat. Regular exercise controls the extra fat of body. Exercises burn the calories which is taken in the form of fat.\tMusele Remains in Tone Position. When exercises are done on regular basis then our muscles remain in toned position. Indeed, muscle remains under some degree of contraction. Muscle becomes firm and maintains a slight, steady pull on the attachments.\tFormation of More Capillaries. When exercises are done, the colour of muscles is changed, because a number of new capillaries are formed for a better efficiency of blood circulation.\tChange in Shape and Size of Muscle. Through regular exercise, the shape and size of muscle is changed. In fact, cells of muscles are enlarged which change the shape and size of muscle.\tDelays Fatigue. Regular exercise delays fatigue. The fatigue is mainly due to formation of carbon dioxide, lactic acid and acid phosphate. The accumulation of C02 acid phosphate and lactic acid becomes less in an individual who performs exercise regularly, Hence, fatigue can be delayed if exercises are performed daily.\tImproves Reaction Time. Due to regular exercise, the speed of nerve impulses increases which ultimately improves the reaction time. These nerve impulses move very quickly through motor nerves from nervous system to muscle fibre. Owing to this the reaction time improves.\tBody Posture Remains Correct. By doing exercise regularly, the strength of muscles increases, which in turn, keeps the body posture in correct position. The postural deformities do not occur. If there is any physical deformity, it is removed by doing regular exercise.\tNon-functioning Fibres Become Active.\tWhen we do not do any strenuous work, all the muscle fibres of our body do not perform any work. In fact, these fibres do not need to be active. But when we perform exercise regularly, the non-functioning fibres also begin to be active. Consequently, the strength of the body increases, because the total contractile power of the muscle fibres increases. | |