درخت حوزه‌های تخصصی

Background : Low back pain (LBP) can cause changes in muscle activity in affected individuals, making it difficult for them to contract their muscles effectively and engage in physical activities. Manual chiropractic techniques have been proposed as a potential solution to improve muscle orientation and function in individuals with LBP. Aim: The purpose of this study was to investigate the effect of manual techniques on maximum muscle activity electromyography, functional disability, and pain in women with non-specific chronic low back pain. Materials and Methods: Twenty women between the ages of 30 and 50, who had been experiencing NSCLBP for over three months with no history of spinal surgery or postural abnormalities, and were able to perform daily activities after providing consent, were recruited from a sports medicine clinic to participate in the study. In the pre-test, the Oswestry Disability Index (ODI) was used to assess functional disability, and the Visual Analogue Scale (VAS) was used to assess pain levels. Additionally, the maximum muscle activity of the multifidus and lumbar quadratus lumborum (QL) was measured using EMG. Chiropractic manipulation techniques were then implemented in the experimental group, with three sessions per week for six weeks, within the clinic. The same tests were repeated in the post-test. The ANOVA test was used to compare the chiropractic and control groups, with a significance level of α ≤ 0.05. Results : The study results indicate that chiropractic manual techniques were effective in reducing lumbar EMG activity ( P = 0.0001), reducing pain index ( P = 0.002), and improving functional disability ( P = 0.001) significantly. Conclusion : The study findings suggest that six weeks of chiropractic manipulation techniques can induce a feeling of relaxation, reduce pain, and passively strengthen the lumbar muscles. These improvements in muscle condition and functional disability may lead to a reduction in pain experienced by individuals with NSCLBP.

Purpose: The aim of this study was to compare the effect of eight weeks of aerobic, resistance and combination training on serum levels of irizin, atherogenic index of plasma (AIP) and some cardiovascular risk factors in inactive overweight men. Methods: In this quasi-experimental study, 32 inactive overweight men participated voluntarily and were randomly divided into 4 groups: aerobic training, resistance training, combination training and control. Serum levels of irizin, AIP and lipid profile of subjects were measured before and after eight weeks of exercise. Results : After eight weeks of exercise intervention, irizin levels increased significantly in all three experimental groups (P <0.05). Also, AIP decreased significantly in all three training groups (P <0.05). On the other hand, in examining the differences between groups, a significant difference was observed between the groups in AIP and irisin (P <0.05). Conclusion: The results of the present study showed that eight weeks of exercise training can possibly cause favorable changes in plasma irisin and biochemical parameters of the blood in overweight people. Also, combined training seems to have more favorable effects than other training methods.

Purpose: The aim of this study was compares the effects of 10 weeks High Intensity Interval training (HIIT) and moderate intensity aerobic training (MIAT) on serum levels of homocysteine and some cardiovascular risk factors in overweight inactive men. Methods: In this semi-experimental study, nineteen overweight men voluntarily participated in this study and were randomly divided to 2 Groups: High Intensity Interval training (HIIT) and moderate intensity aerobic training (MIAT). Subjects performed training programs for 10 weeks, 3 sessions per week. The levels of homocysteine and lipid profile were measured before and after 10 weeks of training programs. For statistical data analysis, independent and paired t tests were used and considered significant at a p≤0.05.   Results: The results of this study showed that both High Intensity Interval training and moderate intensity aerobic training caused a significant reduction of homocysteine levels (P≤0.05). After 10 weeks of high -intensity periodic exercise, cholesterol levels (p = 0.001), LDL (p = 0.002) decreased significantly and HDL levels were significantly increased (p = 0.001), In MIAT training group, only a significant reduction in cholesterol was found (P=0.006). Conclusion: According to the results of this study, it seems that both High Intensity Interval training and moderate intensity aerobic training have favorable effects in reducing body weight and some cardiovascular risk factors.

Football stadiums are the main infrastructures of this popular sport in the society. The purpose of this study is to provide a Pattern for cultural promotion in football fans in stadiums in Iran, which was done by qualitative research method and using grounded theory approach. Through snowball sampling and by conducting 21 semi-structured interviews with university professors and experts in football and culture theoretical saturation was achieved. The results of data analysis in 3 stages of open-coding, axial-coding and selective coding indicate 28 categories that these findings are within the framework of the final model including: Hooliganism, behavioral factors, media, managerial challenges, infrastructural factors and Juridical and legal as causal factors; the nature of football, advocacy and government actions and policy making as context factors; Celebrities, social contexts, economic conditions, Trends and interest, cultural and social and technology as an intervener; manpower, education and training, media, cyberspace, structural strategies and Infrastructural strategies as appropriate ways to promote the level of culture in football fans in stadiums as strategies. According to the proposed pattern, promoting the cultural level of the spectators, marketing development, Exercise promotion, financial development, social progress, the growth of moral security and growth of behavioral security in Iran can be mentioned as positive consequences of promoting cultural levels in football fan in stadiums.

The present research aims to investigate the effect of massage on fatigue and mood in female rowers. Pre-test and post-test of quasi-experimental design with a control group was used for the experiment. Participants in the study were 30 female rowers from Tehran province who participated voluntarily. The volunteer sample was randomly assigned into two experimental and control groups (15 people in each group). Pre-test was carried out for both groups. The subjects in the experimental group then participated in 12 massage sessions under the supervision of a massage expert. Meanwhile, both groups also continued their normal rowing exercises. At the end of the intervention, post-test was carried out for both groups. Rating of perceived exertion and fatigue scale (Borg, 1982), mood questionnaire (Vaez Mousavi, 2007), and a researcher-made questionnaire were used to measure variables. Statistical analysis of variance with repeated measurements was used to test the hypotheses. The results suggested that perceived intensity and fatigue were significantly reduced in the massage group compared to the control group (P <0.05). Also, anger (P=0.002), confusion (P=0.02), depression (P=0.028), mood fatigue (P=0.015), and stress (P=0.039) significantly decreased in the massage group compared to the control group. Force increased significantly in the massage group compared to the control group (P=0.008). In general, the results showed that 12 massage sessions could be used to decrease fatigue and improve mood in female rowers.