درخت حوزه‌های تخصصی

Background: Vaspin is an adipokine secreted from fatty tissues that has serious effects on adipose tissues, muscles, liver, and inflammation. Purpose: The study aimed at determining the effects of 8 weeks of combined training (resistance and endurance) on the serum vaspin level in obese girls. Method: The examinees consisted of 25 obese female students (BMI> 30) from Sistan-Baluchestan University in 2016-17 academic years who voluntarily participated in the research. Samples were divided randomly into two groups: Training (n = 13) and Control (n = 12). Combined training group had both resistance training (5 stations of foot press, Lat pulldown, biceps curl, knee flexion and knee extension for 75-70 minutes) and; endurance was running on the treadmill; in the 2 first weeks, with 60% HR_max for 25 minutes, in the 3-6 th weeks with 75-65% HR_max for 35 minutes, and in the 6-8 th weeks with 75 -85% HR_max for 40 minutes, continuously, for 3sessions each week. Also 10 minutes at the beginning and at the end of the training were warm up and cool down for athletes. It should be noted that during this period the control group did not participate in any kind of sports activities. After receiving the consent forms, the examinees were given enough information regarding the research procedure and their blood samples were obtained in a standard position, collected in pipes containing EDTA, and centrifuged 24 and 48 hours before and after the first and last training sessions, respectively. The obtained plasmas were kept at -80 ° C and their serum vaspin concentrations were measured by ELISA method using the special Human Vaspin kit. To analyze the data, the paired and independent t-test and SPSS-21 Software were performed; the meaningfulness level p was considered to be less than 0.05 (p < 0.05). Results: Results showed that after 8 weeks of combined training, the vaspin levels, weight, BMI, WHR, and %BF decreased meaningfully in the training Group compared to the control Group (P <0.05). Conclusions: considering the meaningful vaspin reduction in this study, it seems that combined training (resistance and endurance) is beneficial to obese and overweighed people.

Purpose: The main purpose of this research was to study the challenges, opportunities and solutions of the championship sports for Iranian women. Method: The research method was mixed,and different methods were applied to serve the purpose of this research. The research sample was selected from the main population (N=172) following Morgan’s sample size determination (118). Open and closed questionnaires were used to measure the effect of each of the challenges and opportunities with a Likert's five-item scale. Results: The findings showed that 9 opportunities and 19 challenges exist regarding Iranian women’s championship sports. Conclusions: Though investigations of women’s sports in internal and external fields show progress in Iranian women’s sports, they do not show any desirable growth compared to male sports, which isdue to social restrictions and other factors.

Vocabulary plays a pivotal role in second language learning and development. Concordance-based methods are considered as new techniques for improving teaching materials and motivating learners to improve their language ability with authentic texts. To this end, the present study aims to enhance the effect of Innovative Concordancing Instruction (ICI) on vocabulary knowledge by integrating principled instructional approaches. The participants included 90 university students at undergraduate level in Islamic Azad University in Tehran, Iran. First, after giving a proficiency test, the students were divided into innovative concordancing, traditional concordancing and control group. The participants in both experimental groups were given eight-week vocabulary instruction, while no special vocabulary instruction was considered for the sample in the control group. Based on the results, ICI had both better immediate and delayed instructional effects on increasing receptive and productive knowledge although the students in instructional groups improved in terms of receptive and productive knowledge. The present study could present some implications for teaching vocabulary when designing vocabulary curricula and developing materials for EFL learners and teachers.