The response of fitness factors to training periods in different ages

Response to exercise training is different in variable age range، but it has not determined the differences physical response in Children، adults and youth. According to this idea، the purpose of present study is a randomized trial to compare the Effect of age on physical response in different periods to fitness training in various ages period. 36 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 three groups of experimental in each age group. Mean SE of age was 8. 83 ± 0. 5year، adolescent 12. 5 + 0. 5 year and youth 16. 3 + 0. 6 year. The program included endurance، strength and flexibility training 3 times per week for 12 weeks. agility، coordination، sergeant jump، hand power، cardiovascular endurance، and modified push-up measured pre and post first 6 weeks and second 6 weeks training. Data analyzed by repeated measure and one ways of ANOVA and Benfroni post hoc test showed that body indexes is better in adolescent group and fitness indexes are better in children and youth group (P<0. 05). Based on this study، improving health indicators for intra-group changes in all groups were observed especially in the beginning training، probably، it’s due to lower movement experiences. Although Between-group variation in health indicators، especially in adolescents، probably due to the added stress of exercise is associated with developmental stress especially in the course experience. The difference in performance between the groups of indicators for the effects of growth effects، hormonal changes and motor perception in different ages.