Page:PHYSICAL FITNESS and HEALTH.pdf/11

 programme must be continued. This is because of the ageing process.

The effects of physical exercises on body are completely reversible except the brain changes that account for learning. Physical exercise brings the body under stress and the body adapts to this stress with a series of immediate or acute changes and if the stress continued for a chronic changes.

Acute changes are such as heart rate, respiratory rate, rise in blood pressure, concentration of blood, modified muscle-chemistry, resetting of thermostat for high temperature etc. All of these changes are temporary untill we recover our normaleynormalcy [sic]. If we do not return to normal we would die.

Repeated subjection of the body to exercise stress results in relatively permanent changes in the structure. This type of changes are called chronic changes. To maintain the change the exercises must be regular. Otherwise the individual will return to normal. This principle is known as the principle of reversibility. That is why, an athlete must be conditioned first before competitions for every season.

PHYSICAL FITNESS
 * 1) Health Based
 * 2) Motor Based

Physical fitness is the quality of the whole body in terms of its state of adaptation to Physical Activity.