The question it is that the exercise beyond increasing the calrica burning, helps to keep the muscular mass, as well as increases the rest metabolism (ACMS, 2000). The children when practising physical exercise can get amongst the main benefits: control of the corporal weight; increase of the force and the aerbica capacity, better formation of the bones, minimizao of the factors for cardiac illness, reduction of the anxiety; they will sociabilizaro and improves of auto-esteem ACMS (2000). The component Physical Activity, for the question of proportionate the energy expense for regular practical its, has been associated with the reduction of the adiposity in children and adolescents (MATSUDO, 2006). The physical exercises that produce greater effect in the question of the control of the corporal mass are the aerbicos exercises, therefore they use great muscular groupings and activate the system all to cardiopulmonar. The walked one, the race, the cycling, swimming is typical examples of activities that they possess characteristics necessary to promote organic adaptations for the control of the corporal mass. Other modalities of physical exercises, can be enclosed in the same category of classification. Between them they are: the hidroginstica, the dance, certain types of sports and recreativos games. Continue to learn more with: Tulip Retail. (GUEDES, 1998; MCARDLE et al, 2000).
Moreover, the intensity and the duration of these activities that use the aerbico metabolism have great importance in the effectiveness of the alterations in the corporal composition (GUEDES, 1997). Siegel (1987) showed the importance of the games with races for the children as an alternative to improve the cardiovascular system. Other reasons for the inclusion of games with races, according to author, would be the reduction of it estresse and the ability all the children to partciparem of some type of physical exercise. For the maintenance of the health of the children the recommendation is of that the lapsing of the physical exercise is individualizado to maturity level, to the state of health and in the experience of the child with the physical exercises. The American College of medicine of the Sport recommends that children above of 6 years of age practise physical activity in a moderate intensity during 30 minutes in the majority of the days of the week (ACMS, 2000). However when the priority will be to the reduction of the corporal mass, the recommendation of the Institute of Medice (IOF) apud Blair et al (2004), is that the people must practise 60 minutes of physical activity in every day of the week. The increase of the infantile obesidade in the last decade is consequence to a large extent of the physical inactivity (ACMS, 2000). The obesidade has direct relation with sedentary behaviors as, to pass much time attending television or in the use of the Internet (HAGER, 2006). Then, it is front to this reality that the habit to practise the physical activity can assist in the combat to this illness that reaches millions of people in the whole world.