Effect of age range on physical adaptation origin of fitness training during childhood to youth

Physiologic fitness and motor performance is different in variable age range، but it has not determined the differences physical adaptation in Childs، adults and youth. According to this idea، the purpose of present study is a randomized trial to compare the effects of training on ranges of age fitness variable in boys. 96 participants voluntarily were randomized at three ranges of age included: 8 to 10 age group: 12 to 14 age group: 17 to 19 age group training divided into two groups of experimental and control in each age group. Mean SD of age، height and weight at children was 8. 83 + 0. 5year، 1. 3 + 0. 1 meter، 34. 1 + 2. 8 kg and adolescent 12. 5 + 0. 5 year، 1. 5 + 1. 1 meter، 40. 5 + 6. 3 kg and youth 16. 3 + 0. 6 year، 1. 7 + 1 meter، 69. 6 + 4. 8 kg. Program included endurance، strength and flexibility training 3 times per week for 12 weeks. Variables of agility، coordination، sergeant jump، hand power، cardiovascular endurance، and modified push-up measured pre and post 12 weeks training. Data analyzed by one ways of ANOVA and Benfroni post hoc test showed that long jump، speed، shoulder elevate، sit-up at children group is better rather than adolescent and youth groups (P<0. 05).