مطالب

Purpose: The aim of this study was to investigate the acute effects of HIFT exercise, on creatine kinase (CK) and lactate dehydrogenase (LDH) in blood serum in overweight adult men. Method : Twenty-two untrained non-smoker overweight men (age, 42.9 ± 5.6 years; body mass, 94.2 ± 9.3 kg; body height, 178.9 ± 4.5 cm; and BMI, 29.04 ± 3.3 kg/m2) volunteered to participate in this study and performed a session of HIFT exercise with 80-85% HRmax consisting of three sets of 10 exercises. Blood samples were collected before and immediately after training to measure serum CK and LDH levels. Results: The HIFT protocol significantly increased serum CK (Pre: 114.6 U/L; Post: 124.3U/L; p< 0.05{t=-5.48, p=0.001}); Also, LDH had a significant increase (pre:213.4 U/L, post: 225.4U/L; p<0.05{t=-4.09, p=0.001}). Conclusion: It can be concluded that HIFT with AMRAP (as many repeats as possible) protocol will lead to a significant increase in some indicators of muscle damage such as CK and LDH levels in overweight men. This protocol can lead to muscle damage in overweight men.

The purpose of the current research was to investigate and prioritize the promoting and inhibiting factors in the development of women's professional basketball in Khorasan Razavi, Iran. This is a mixed study conducted with an exploratory-analytical approach. In the qualitative part of the research, the interviewees included sports management professors, prominent basketball pioneers in Khorasan Razavi province, professional female basketball players, as well basketball boards’ managers and representatives. In the quantitative phase, the statistical population included professional female basketball players, coaches, and basketball pioneers in Khorasan Razavi. In general, 8 interviews and 134 questionnaires were collected in the research process. The qualitative data was analyzed through the content analysis method while the quantitative data analysis process was completed by using SPSS software (v. 22) and exploratory factor analysis, as well as Friedman's ranking tests. The findings of the research revealed that out of 48 items obtained as effective factors on the development of women's professional basketball in Khorasan Razavi province, 25 items were considered as promoting factors and 23 items were found as inhibiting factors. Also, based on the results of the exploratory factor analysis test, 6 promoting factors ("socio-cultural factors", "technical level", "basic factors", "expert human resources", "competition and event", and "scientific indicators") and 5 inhibiting factors ("financial issues", "motivational supportive factors", "facilities factor", "club ownership" and "management perspective”) were identified. "

The current study aims to explain a communication model for quantum leadership, productivity and empowerment of personnel in the Ministry of Sport and Youth using Interpretive-Structural Modeling approach. The research population included all of the personnel in the Ministry of Sport and Youth, and 269 persons were selected randomly as the research sample. The research tool was questionnaires adopted from the literature for collecting the research data. Twelve sport management experts and Cronbach’s alpha method, respectively confirmed the validity and reliability of the questionnaires. SPSS software and interpretive-structural modeling (ISM) approach were applied to analyze the research data. The results indicated the optimal level in the quantum leadership, as well as personnel productivity, and empowerment. Based on the results, an increase in the level of quantum leadership in the Ministry of Sport and Youth raises the level of personnel productivity, and empowerment. In addition, an increase in the personnel empowerment level in the Ministry of Sport and Youth increases the level of personnel productivity.