مقالات رزومه دکتر فریبرز هوانلو

Corona is a part of the big family of viral diseases, and a person gets a respiratory infection by contracting this type of virus. As a result of the inactivity caused by this epidemic, many physical abilities of people decrease, balance being one of the most important of them. Considering the importance of balance in daily activities as well as sports, the aim of this study is to determine the effect of a HIIT exercise program at home during quarantine on static and dynamic balance in female student athletes.

The statistical population studied in this research were teenage girls of athletes in Tehran. Based on the entry and exit criteria, 30 people were randomly divided into two experimental and control groups. The experimental group did HIIT exercises at home for 6 weeks and 2 sessions every week. In this study, static and dynamic balance were measured by stork tests and Y balance test, respectively. In order to evaluate the effects of the training, analysis of covariance was used, and in order to evaluate the effects within the group, the paired t-test was used.

The results showed that there was a significant difference between the pre-test and post-test scores in the experimental group (P≤0.05).

Based on the findings of the present research, it can be concluded that HIIT exercises are effective on the static and dynamic balance of adolescent girls, so it is suggested that these exercises be used in exercise programs with the aim of improving balance.

The overall aim of this study was to investigate the effect of eight weeks of upper quadrilateral training on chronic middle-age men's headache.

The research method was semi-experimental and research design was pre-test and post-test. The statistical population of the study included all middle-aged men with tension headache referring to health centers affiliated to Tehran University of Medical Sciences. The sample consisted of 6 subjects who were selected from among those referring to health centers. The criteria for entry into the study included: confirmation of the criteria for chronic tension headache by a neurologist and having a range of 40- 55 years. Information about the severity and frequency of headache and drug consumption in both groups before and after the exercise were assessed by a self-assessment questionnaire. Subjects' sleep quality was assessed in two stages: pre-test and post-test using the Pentecostal sleep quality questionnaire. Became

T-test results (at the level of error of α = 0.05) showed that eight weeks of upper quadrilateral training on the severity and duration of chronic tension headache and also the reduction in the dose of analgesics and ultimately the sleep quality of people with tension-type headache Chronic effects had a positive effect (p <0.001).

The results of the study suggest that occupational therapists use upper quadrant physical exercises to improve the patient's cold pain.

 Football is one of the most popular sports that has many injuries. Due to the importance of the core stabilizer muscles, the weakness of these muscles can lead to poor performance and thus increase injuries. On the other hand, this area as a bridge between the lower and upper limbs with its proper function can improve performance and performance.

The statistical population of the present study included 30 children athletes who purposefully entered the study and were divided into two groups of 15 control and experimental group. The experimental group performed core stability exercises in one session along with their exercises and the control group only previous exercises. The performance of individuals was assessed using the Y balance test, vertical jump (sargent), three-legged distance, one-leg jump time at a distance of six meters and balance system error scoring system test. Dependent t-test was used to evaluate the difference in performance between athletes in the two groups.

The results of the present study showed that central stability exercises had a significant effect on improving lower limb function in athletes (P≤0.05).

The results of the present study showed that core stability training had an immediate effect on the performance of children footballers. Therefore, it is useful for coaches and athletes to perform central stability training in addition to their training to improve their performance.

Wrestling is a high contact sport with a significant risk of injuries. Identifying risk factors can help preventing wrestler’s injuries. little is known about the contribution of balance and proprioception to sport injuries. The purpose of this study was to find out the relationship between dynamic balance and knee proprioception and the injuries in young wrestler.72 young wrestlers from Tehran primer league participated in this study. Before the start of season, proprioception was measured at 30°, 60° and 90° knee flexion using the Biodex Isokinetic pro 4 system. Dynamic balance was measured by Biodex balance system. Injuries were recorded by the team's medical staff. Logistic regression modeling indicated that there is no significant relation between Dynamic balance and proprioception of knee at 30 and 60 and at 90 degree and musculoskeletal injuries. Balance and proprioception testing, as performed in the present study, cannot be recommended as a screening test to predict injuries in young male wrestler.

Swimming is one of the most popular disciplines in the Olympics and is popular among athletes. Injury in this sport is often due to repeated repetition of high and repetitive movements. Many researchers Muscle strength is considered one of the most important risk factors. The power of cuff rotators is one of the main risk factors for a shoulder injury.

The statistical samples of this study consisted of 28 swimmers of 12 to 14 years old girls practicing in Alborz Province Swimming League who have been practicing swimming regularly for at least 5 years. In order to perform this study, the maximum isometric and isokinetic contractions (speeds of 60, 90, and 180 degrees per second) in the internal and external rotators of the arm and proprioception of the shoulder joint (45 and 90-degree angles) were measured with the isokinetic device. Then they practiced with TRX for six weeks, after which the measurements were repeated.

The results showed that there was a significant relationship between six weeks of TRX training on isokinetic power at speeds of 60, 90 and 180 per second in eccentric and concentric contractions (P˂0 / 5) as well as isometric strength of internal rotators and External and proprioception of the shoulder joint at 90 and 45-degree angles were significantly different

it can be stated that shoulder injury prevention programs are very important, especially in rotator cuff muscles, for swimming athletes, and strengthening these muscles with TRX is effective because it has positive effects.

Low back pain is one of the most common health problems in different societies in the world. The purpose of this study was to investigate the effect of dynamic stability training on pain, range of motion and trunk muscular endurance in women with chronic low back pain.

The subjects of this study included 30 women with chronic non-athlete low back pain who ranged in age from 19 to 48 years and were randomly divided into experimental (n=15) and control (n=15) groups. All subjects were first assessed by the Oswestry Low Back Disability Questionnaire for disability in the lumbar region. VAS, goniometer and ITO were used to determine pain, a range of motion and muscular endurance, respectively. The experimental group then received a training program (DNS) for eight weeks, but the control group received no specific rehabilitation program. Pre-test and post-test were used in both experimental and control groups. In this study, paired samples t-test and independent samples test was used by spss24 software.

The results showed that after eight weeks of dynamic neuromuscular stability training, there was a positive effect on pain, the trunk muscular endurance and range of motion (p≤0.05).

The dynamic neuromuscular stability (DNS) training focus on the natural growth process of the motor system, reduce pain, increase lumbar range of motion, and increase trunk muscular endurance in women with chronic low back pain. Keywords: DNS training, Chronic back pain, Range of motion, Trunk selective muscular endurance

Muscle strength is needed for performing many movements and skills in football like speed decreasing, shooting, dribbling, rotating, and jumping. Several studies shown that lower limb muscle strength can increase the quality of exercise skills. But few studies have compared the strength of players at different levels. Therefore, the present study intends to investigate the strength of the isokinetic and isometric knee muscles of the elite, sub-elite and amateur football players of Iran. For this purpose, the isokinetic strength of the knee muscles in 102 soccer players including 29 players of the national under-23 football team of Iran (elite), 29 players of 1st division of under-23 football team of Iran (sub-elite) and 44 players of 2nd division of under-23 football team of Tehran province (amateur) was measured for angular momentum of 60 and 180 degrees per second by the isokinetic Biodex System 4. The isometric strength of flexor and extensor muscles of knee were measured at an angle of 60 degree. The results of the ANOVA test showed that there is a significant difference in strength of flexor and extensor knee muscles in both momentum angles of 60 and 180 degrees per second and flexor/extensor isokinetic strength ratio at 180 degrees per second speed between elite, sub-elite, amateur. However, there was no significant difference in the ratio of flexor /extensor isokinetic strength ratio at 60 degrees per second. Also, there was a significant difference in isometric strength of the extensor and flexor muscles at knee flexion angle of 60 degrees in the three groups. Considering the results of the present study, it can be concluded that exercises and the competition level affect the isokinetic and isometric strength of the knee muscles of young football players of Iran.

The purpose of this study was to investigate the effect of 6 weeks of water exercises with and without weight vest on balance indices in middle-aged women with balance deficiency.The present study is a quasi experimental study, which is performed on 26 middle-aged women with available sampling method, which are randomly divided into two groups: water exercises with weight training vest and weightless water training group.The Balance Sheet of Biodex was used to evaluate the balance.After the end of 6 weeks of training, all pre-test steps were repeated in the post-test. To analyzing Data, using Shapirowilk and independent T-test and combined analysis of variance and at the significance level of 0.05.The De Cochain method was used to examine the effect size of the exercises.The results of statistical test of combined variance analysis showed that in both groups with and without weightless vest, the static and dynamic balance of subjects in the post-test improved compared to the pre-test(P≤0.05).Also,the effect of more vest training on non-vest exercises was observed on all the static and dynamic balance indices of subjects.As yet Most researches has used water exercises to improve balance in various societies, including the elderly, and has been less focused on the middle-aged community.Implementing combined water exercises along with weightless vest can well cover balance factors and improve the balance of middle-aged people. Therefore, in order to prevent disturbance in the balance caused by age,it is recommended to take advantage of the benefits of water exercises with weight vest in middle age.

The purpose of this study was the effects of 8 weeks of repetitive speed trainingin hypoxia and normoxia conditions on vascular endothelial growth factor (VEGF) in swimmers.

This study is a semi -experimental research with pre-test and post-test which was performed on   30 women elite swimmers. The subjects were randomly divided into three groups including two experimental groups (training group in hypoxia and normoxia conditions) and control group. Training groups exercised 5 sessions per week including 2 training sessions on the stationary ergometer and 3 sessions in swimming pool for 8 weeks. Training protocols for both experimental groups was designed with the same intensity and duration (9 attempts for 30 seconds at 80% of maximum performance, with two minutes of rest) on swimming ergometer. The training of hypoxia group was performed in hypoxia condition stimulated 3500 meter altitude with %14 of Fio2. At this time, the control group only performed 5 normal swimming sessions per week. The vascular endothelial growth factor factors in all three groups were measured by ELISA before and after 8 weeks. By the SPSS software it is applied the one way ANOVA test at the significant level of p≤0.05 for extraction of results.

The mean post-test of VEGF was higher than pre-test in both groups of hypoxia (p

The current study aims to investigat the effect of low-intensity aerobic training for 10 weeks along with blood flow restriction on amount of protein BDNF in soleus and EDL muscles as well as the sciatic nerve in aged male rats.

60 aged -Wistar male rats (23-24 months) were chosen which their weigh were 355 to 481 grams. They were divided into 6 groups randomly, blood flow restriction (BFR), exercise with blood flow restriction (BFR + Ex), sham(Sh), sham exercise (Sham + Ex), control (Ctl) and control exercise (Ex). They were trained with a low aerobic exercise (15 m / min) for 1 hour, 5 days a week for 10 weeks then were sacrificed 48 hours after the last training session. The samples of muscle and the sciatic nerve were separated immediately and they were put in a solid nitrogen. and Then,they were preserved at -80 ° C. The protein samples were detected by Western Bloting method. The statistical analysis were conducted with SPSS software version 18. Data normal distribution determind by Shapiro – Wilk test. Comparisons were performed among different groups by one-way ANOVA and post hoc Tukey’s test. P values less than 0.05 were considered as statistically significant.

The results have shown that BDNF protein in the EDL muscle for BFR + Ex group significantly decreases only with Ctl and Sh groups (P˂0.05). In addtion, in soleus muscle BFR + Ex group significantly decreased in all groups (with groups Ctl, Sh and BFR 0.00 = p and Ex and Sh + Ex p˂0.03). moeover, Ex, Sh + Ex groups in comparision with Ctl and Sh have decreased significantly (0.00 = p). On the other hand, the sciatic nerve of BFR + Ex group, in comparision with all groups, increased significant (0.00 = p).

This study has indicates that this type of exercise affects on the BDNF protein in slow and fastwitch muscles. Furthermore, BFR+Ex , as a training method, can influence on nerve and muscule positively.

The risk of injury in football is high. Many researchers have introduced muscle strength as one of the most important internal risk factors, but few studies have examined the relationship between the isometric strength of muscles and incidence of injuries. Therefore, the aim of this study was to examine the relationship between isometric strength of lower extremity muscles and the incidence of injuries in football players and the power to predict these injuries. The sample of this study included 73 football players under 21 years of age. Before the beginning of the season, the anthropometric dimensions and isometric strength of lower extremity in dominant leg of each player were measured by Isokinetic device (Biodex system 4), then each player was followed up for 8 months and their injuries were recorded. The results of Cox regression test showed no significant relationship between isometric strength of the measured muscles and the incidence of injuries in lower extremity. According to these results, it is suggested that medical and technical staff of football teams use isometric tests to identify high risk players. Other strength evaluation methods such as isokinetic and isotonic strengths may be more effective.