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Purpose: The aim of this study was to compare the effects of three methods of endurance, resistance and concurrent training on aerobic fitness and body composition male students with overweight. Methods: Forty five overweight male who were resident of Shahed university dormitory were purposefully selected and randomly assigned into following groups: endurance, resistance and concurrent training. Each Group performed their own protocol for 8 weeks, 3 times per week with specified intensity and duration. Before starting the protocol and 24 hours after the last training session, body composition parameters and aerobic fitness were measured at same condition. Data were analyzed using analysis of covariance. Results: The findings showed that three methods of endurance, resistance and concurrent training protocol had a significant effects on aerobic fitness and body composition parameters. In comparing the difference between groups of three methods of endurance, resistance and concurrent training on aerobic fitness and body composition parameters were significantly different and the variables of aerobic fitness and body composition parameters of concurrent training was more effective than two other exercises. Innovation this research is identical the work out of training (time) in the 3 protocol that to compare intergroup among the most effective way to same time identification. Conclusion: It seems that eight weeks of endurance, strength and concurrent exercise training have effects on aerobic fitness and body composition parameters male students with overweight but all three types of exercise separately with diet modification could be improved aerobic fitness and body composition indices.

Competency of managers plays a critical role in the success of the organizations. The aim of this study was to investigate the competency of managers of Sports and Youth Offices in Alborz, Iran. 134 managers and staff of Sport and youth offices completed the researcher-developed questionnaire. Two questionnaires with 50 questions were used to get the research data, one questionnaire completed by managers and the other completed by staff. For validity, the questionnaires content were approved by 10 sports management experts, and their reliability were confirmed by Cronbachs alpha, respectively, 0.83 for the managers questionnaire and 0.90 for the staff questionnaire. Friedman, Kolmogorov-Smirnov, and t-test were conducted to test the research hypotheses. Result of the study shows that there is a significant difference between managers and Staff concerning communication skills, decision-making, encouragement, business communication, leadership, team development, and deployment of positive feature of the managers.

The musculoskeletal and support systems along with biomechanical factors lead to tissue adaptations in the skeletal, musculoskeletal and nervous systems, resulting in changes in movement pattern. The aim of this study was to investigate the effect of tactile feedback along with corrective exercises on the degree of thoracic kyphosis in people with Hyperkyphosis . Twenty patients with postural kyphosis greater than 42 were selected voluntarily and randomly divided into experimental and control groups. In the pre-test and post-test, the degree of kyphosis of both groups was measured using a flexible ruler. In the intervention phase, both groups performed corrective exercises for 8 weeks, 3 sessions per week and each session for 30 to 45 minutes. With this difference, the experimental group received tactile feedback, but the control group did not receive any feedback. The results of 2-factor analysis of variance showed that tactile feedback along with corrective exercises (D = -12%) compared to corrective exercises (D = -8%) led to a reduction in kyphosis in people with Hyperkyphosis (P = 0.018).It seems that tactile feedback with changes in sensory inputs can be an effective complement to corrective exercises to reduce the degree of kyphosis.

Infertility is a health problem that affects about 10-15% of couples worldwide. Infertility is defined as the inability of couples to successfully conceive a child after one year of unprotected sex. The causes of infertility are often not easily identified. However, this disorder appears to be due to genetic or environmental factors, some of which may be modifiable and may be considered as a treatment option. The use of emerging infertility treatment technologies has been somewhat effective. However, these methods are very expensive and, in some cases, their success rate is relatively low. A sedentary lifestyle can lead to several disorders such as cardiovascular diseases, diabetes, cancer and conditions such as obesity. Obesity can have a negative effect on the fertility of couples. Overall, it seems that changing the sedentary lifestyle and increasing physical activity by performing regular exercise training can enhance the chances of fertility. However, it should be noted that strenuous exercise training has a negative effect on fertility.

Purpose: The purpose of this study was to investigate the effect of creativity on performance with the mediating role of knowledge sharing in sports federations. Method: This field study was a descriptive-correlative research and a practical one. The research population consisted of all presidents, vice presidents, general secretaries, committee managers and experts in 51 sport federations (N=780), and 267 subjects were studied through stratified random sampling approach that was consistent to recommended sample by Krejcie & Morgan table. The research tools were adopted from the existing literature to collect the data. The reliability of the research tools were confirmed according to Cronbach’s alpha. Face, content, and construct validity were used to evaluate the validity of the research tools. To test the research hypotheses, structural equation modeling was conducted by applying Smart PLS. Results: The findings demonstrated that "Creativity" had a positive and significant effect on "Performance", as well as "Knowledge sharing". Moreover, "Knowledge sharing "had a positive and significant effect on "Performance". The results also showed that "Knowledge sharing" mediate the relationship between "Creativity", and "Performance "in sport federations. Conclusions: The findings of this study, with emphasis on the role of creativity and knowledge sharing in improving the performance, can be regarded as a platform for enhancing the performance of sports federations. Creativity and knowledge sharing can play a significant role in empowering the human capital that ultimately result in performance development.