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Mr Saeed Mollahoseini Paghale, Mr Milad Fallahzade, Dr Mohammadreza Amirseyfadini,
Volume 0, Issue 0 (11-2019)
Abstract

Introduction and objectives: In the past decades, the control of hand tremors in neurological disorders such as Parkinson's has attracted a lot of attention. The theories of closed-loop deep brain stimulation method are increasing significantly. The purpose of this article is to provide an automatic closed-loop method for the rehabilitation of Parkinson's patients with hand tremor symptoms using machine learning.
Materials and methods: In this article, a mathematical model including muscle model, basal ganglia, cerebral cortex and supplementary motor area is used to simulate tremor. Also, to control hand tremors, a non-integer proportional-derivative-integral controller (non-integer PID) has been used, as well as using the smart Proximal Policy Optimization (PPO) algorithm as a subset of reinforcement learning to adjust the coefficients.
Findings: In addition to reducing hand tremors and automatic learning for use in different levels of the disease, which has given acceptable results compared to other control methods, among the advantages of the Prihadi method is the practical implementation of this method in the real world due to the simplicity of the controller. And also the easy implementation of the intelligent algorithm is due to the automatic adjustment of the coefficients of artificial intelligence networks.
Conclusion: In addition to optimizing output symptoms such as hand tremors compared to other controllers, the proposed intelligent system can also be used for all levels of the disease due to its adaptability, causing a significant reduction in the side effects caused by continuous brain stimulation in the brain stimulation method. It opens in the form of a ring.
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Volume 0, Issue 0 (11-2019)
Abstract

Introduction and Objective: One of the strategies that athletes can use to temporarily increase strength and muscle power is post-activation potentiation (PAP) during warm-up. However, the effect of this phenomenon on kinematics of special movement has not been determined. Therefore, the aim of this study is to investigate the acute effect of PAP during warm-up on lower extremity kinematic characteristics during heading in soccer players.
Methodology: The study sample consisted of 24 semi-professional youth soccer players with an average age of 18.67±1.11 years, height 182.32±7.12 cm, mass 74.17±7.46 kg. who performed four different warm-up methods, including PAP-take-off, PAP-landing, combined-PAP, and general warm-up, derived from the stages of soccer heading. Knee and hip angular velocities during the take-off phase, maximum knee flexion angle, and duration of knee joint pause during the landing phase were recorded using a three-dimensional motion analysis device (vicon peak ltd, oxford, vicon UK) with four T20 cameras with a frequency of 1000 Hz. Finally, analysis of variance with repeated measurements and post hoc Bonferroni test were used at a significance level of P<0.05.
Results: There was a significant increase in knee and hip angular velocities following combined-PAP and then PAP-take-off compared to other warm-up programs. Moreover, there was a significant increase in knee flexion angle after PAP-landing compared to other warm-up programs. Additionally, there was a significant increase in the duration of knee joint pause after general warm-up compared to other warm-up programs.
Discussion and Conclusion: PAP-take-off improves jumping performance, while PAP-landing improves landing performance. The combination of these two methods, i.e., combined-PAP, will yield better results overall.

 
Mrs Ranasadat Heydari, Dr Mansour Sahebozamani, Dr Fatemeh Karimi Afshar,
Volume 0, Issue 0 (11-2019)
Abstract

Introduction and Purpose: Non-specific chronic back pain(NSLBP) is one of the main problems of the health community, which has a high prevalence. Therefore, the aim of this study is to investigate the effect of 8 weeks of suspended core stability exercises on the core stability, pain level, static and dynamic balance in the females with NSLBP.
Methods: In the present study, 21 females  with NSLBP were randomly divided into experimental and control groups. The Core stability, Pain level, Static and Dynamic balance were measured by valid tests of Core stability, Visual analogue scale (VAS) and Biodex balance system respectively. The SPSS25 software were used for data analysis.
Results: Based on the results of the study, unlike the control group, there was a significant difference in core stability, pain level, the static and dynamic balance variables from pre-test to post-test in the experimental group(P≤0/05). Also this difference was observed between the experimental and control groups(P≤0/05).
Conclusion: According to the results of this research and suspension system of TRX exercises, Core Stability Exercises with TRX straps which is not elasticity, may simultaneously improve core stability, static and dynamic balance and decrease pain in female with NSCLBP.
Dr Rohollh Nikooie, Msr Bahareh Hajmalek, Dr Dariush Moflehi, Mr Amir Nejad Vaziri,
Volume 0, Issue 0 (11-2019)
Abstract

Background: This semi-experimental study aimed to investigate the effect of insulin resistance on substrate selection during exercise in obese diabetic women.
Methods: 24 inactive obese women, including control (C; n=8,BMI=31.03±1.18), non-insulin resistance (NIR;n=8,BMI=30.91±0.78), and insulin resistance (IR, n=8,BMI=31.57±0.91) groups, were purposely selected and performed a standard incremental test with an initial workload of 50 W and increased in the workload of 20 W every three minutes. Respiratory gases were collected throughout the test. Cross-over point (COP), a point at which the metabolic substrate changes from fat to carbohydrates, and FATmax point at which fat has the highest contribution to energy supply, were determined. Heart rate and oxygen consumption corresponding to COP and FATmax, points were calculated and compared among the groups using one-way analysis of variance (ANOVA).
Results: In both diabetic groups, heart rate (P<0.001) and oxygen consumption (P<0.001) corresponding to COP were significantly lower compared to the C. Both variables had lower values in the IR compared to the NIR (P<0.001). In both diabetic groups, oxygen consumption corresponding to the FATmax point was significantly lower compared to the C (P<0.001) and had lower values in IR compared to the NIR (P<0.001). Conclusion: In general, the results of the present study showed that insulin resistance is associated with more reliance on carbohydrates and diminished fat oxidation at submaximal exercise intensities.
 
Mr Saeid Eimani Zadeh, Dr Mansoor Sahebzamani, Dr Mohamad Taghi Amiri Khorasani,
Volume 13, Issue 10 (10-2015)
Abstract

The purpose of this study was to investigate the effect of soccer specific functional fatigue on hip and knee
joints angles during landing in professional players.15 soccer players with at least 2 years experience in
Kerman soccer clubs were selected randomly. To evaluate the lower extremity kinematics following
jumping and soccer specific- heading, three cameras (with50Hz) were used. To cause fatigue in subjects,
specific functional protocol similar to specific bangsbo soccer was used and Quantic sport v21 soft ware
was administrated for kinematic analysis of the recorded films. To statistical analyzing of data, descriptive
statistical methods, and paired-t test were administrated at α=0.05.Finding revealed that hip and knee
angles in sagittal and frontal plane in landing is influenced by functional fatigue. This results has been
reducing knee and hip flexion angles and increased varus in knee joint. Results demonstrated a more
erect landing posture due to a decrease in hip and knee flexion angles in the post fatigue condition.
However, functional fatigue significantly decrease lower extremity control ability in male soccer player
during landing.


Mohammad Alimoradi, Mansur Sahebazamini, Roya Bigtashkhani,
Volume 19, Issue 22 (12-2021)
Abstract

Background and Objective: The movement patterns play a key role in the incidence of non-contact ACL injuries. This study attempts to investigate the effect of the +11 program on the jump-landing pattern in female amateur soccer players. Methods: 30 female amateur soccer players were randomly divided into experimental and control groups (15 people in each group). The experimental group performed the +11 program 3 times per week for 16 weeks whereas the control group maintained their regular warm-up method during the study. The jump-landing pattern of the players was investigated by a Special football jump-landing task using the landing error scoring system. Results: The results of the study showed that the 16 weeks of implementation of the +11 program significantly improved the jump-landing error scores of the players in the experimental group. Also, comparison of the results between experimental and control groups showed that there is a significant difference between the two groups. Conclusion: It can be concluded that the +11 program could improve the jump-landing pattern of the female soccer players in pre_ participation evaluation (PPE). Therefore, trainers are advised to use this program as an alternative to regular warm-ups in order to prevent injury.

Reza Khazaei, Dr Mansour Sahebozamani, Dr Abdolhamid Daneshjoo,
Volume 20, Issue 24 (3-2023)
Abstract

 Postural disorders disrupt muscle activity and lead to joint dysfunction. Maintaining the function of the shoulder joint requires precise coordination and on-time action of muscles, and its dysfunction lead to change in the level of muscle activity, movement disorder. This study aimed to measure the effects of corrective exercise program with kinesiotaping and physio-ball and durability of these effects after 4 weeks on EMG of serratus anterior, middle trapezius and rhomboids major muscles among male young with upper crossed syndrome. Forty-five male young with upper crossed syndrome (control group: age:17.00±0.75, height 163.93±2.01, weight 65.20±6.51، BMI 25.10±2.76, corrective exercise with physio-ball: age 16.93±0.88, height 161.66±6.85 ,weight 63.40±10.09، BMI 26.84±3/04, corrective exercise with kinesiotaping: age 17.00± 0.92, height 161.53±7.25, weight 62.86±6/81, BMI 27.88±3/84) objectively selected and participated in this study. The training program designed based on the previous studies and conducted during 8 weeks, three sessions per week (each session 40 to 60 minutes) under the supervision of the examiner. EMG device was used to measure of the MVIC electrical activity of trapezius, rhomboids and serratus anterior muscle during external and internal rotation and extension of shoulder. After 4 weeks of the training, the post-tests were repeated.The one way ANCOVA was showed that the amount of electrical activity of the selected shoulder girdle muscles after eight weeks of testing in both experimental groups in the post-test and after one month inactivity test were significantly improved than the pre-test Group corrective exercise with physioball (serratus anterior p= 0.001,17.14%, middle trapezius p=0.001,15.79%  and rhomboids major p=0.001,14.81%), corrective exercise with kinesiotaping (serratus anterior p=0.001,17.14%, middle trapezius p=0.001,21.62% and rhomboids major p=0.001,20%) and durability in group of corrective exercise with physioball (serratus anterior p=0.001, 8.6%،, middle trapezius p=0.001, 7.9% and rhomboids major p=0.001, 7.4%) durability in group corrective exercise with kinesiotaping (serratus anterior p=0.001, 8.6%, middle trapezius p=0.001،16.2 % and rhomboids major p=0.001, 8%).  Considering the results of the present research, it can be stated that corrective exercise programs with kinesio taping and physioball have an effect on the electrical activity and durability of selected shoulder girdle muscles and And these effects are lasting even after 4 weeks. It is suggested to use this program of corrective exercises for male students with upper crossed syndrome to improve their shoulder girdle muscles strength.
 

Mr Mojtaba Iranmanesh, Dr Mansour Sahebozamani, Dr Mohammadreza Amir Seifadini,
Volume 21, Issue 25 (9-2023)
Abstract

The shoulder complex as one of the most moving joints of the body frequently was used by overhead sports athletes. Thus, musculoskeletal screening such as assessment of the range of motion (ROM), and strength variables can be useful to injury prevention strategies and further the development of conditioning and rehabilitation programs. The purpose of this study is to compare selected variables and the ratio of ROM and strength in volleyball, handball, and badminton players. A total of 36 athletes with similar physical characteristics (volleyball: age=26.65±4.56 y, weight=91.07±7.91 kg, height=185.14±12.25 cm; handball: age=27.29±3.12 y, weight=90.11±6.38 kg, height=183.52±9.67 cm, and badminton: age=26.01±4.29 y, weight=87.85±4.59 kg, height=182.38±10.74 cm) were selected to participate in the current study. A Leighton flex meter and hand-held dynamometer were used respectively to measure the ratio of ROM and strength.The results showed that the mean ratio of external(ER) strength to internal (IR) strength and ER ROM to IR ROM were significantly different between the three groups. The post hoc test revealed that badminton athletes had significant differences in all of the measured variables to both volleyball and handball athletes. But there were no differences between volleyball and handball athletes.In conclusion, preseason screening is vital in achieving optimal values on these measures and may reduce future shoulder injuries in overhead athletes.

Mrs Nasim Sivandi, Dr Rohollah Nikooie, Dr Darioush Moflehi,
Volume 21, Issue 25 (9-2023)
Abstract

Amino acid taurine can increase the utilization of fatty acids and stimulation of lipolysis through augmentation of the expression of genes related to regulation of energy metabolism. The purpose of this study was to investigate the effect of taurine supplement on lipid oxidation and substrate selection during exercise in obese women. 15 obese women (Body weight: 34.53 ± 6.33 (kg), BMI: 33.12 ± 3.23 (kg/m2)) performed a standard incremental test before and after 21 days of taurine supplementation (50 mg/kg). Blood samples were collected before and after the test and breath by breath mesurment of respiratory parameters were done throughout the test. FATmax (as the point at which fat contributes the most to the consumed energy) and Cross over point (as the point at which the predominant fuel changes from fat to carbohydrates, COP) were calculated. Heart rate, workload, and oxygen consumption corresponding to FATmax and COP were determined and compared between attempts before and after supplement consumption using independent t-test and analysis of variance with repeated measures. Following taurine consumption for 21 days, the changes in serum levels of estrogen and progesterone hormones, maximum oxygen consumption, and time to exhustion during incremental exercise test were significantly higher than before supplement consumption. Nevertjeless, the consumption of supplement had no effect on heart rate, workload and oxygen consumption corresponding to FATmax and COP points. Despite the increase in performance variables during exercise, taurine supplementation has no effect on substrate selection during exercise in obese women.

Dr Malihe Aveseh, Dr Maryam Koushkie Jahromi, Dr Javad Nemati, Dr Saeed Esmaeili Mahani,
Volume 21, Issue 25 (9-2023)
Abstract

Lactate has been recently considered as a signaling factor involved in metabolism. The aim of this study was to investigate the role of lactate entrance into the brain on endurance training-induced adaptations in lipid oxidation. 
24 male rats (age: 8 weeks, weight: 197 ± 21 g) were divided into control (C), trained (T), and traind+4-CIN (T+4-CIN, which experienced the inhibition of lactate entrance into the brain during exercise). All animals performed a single session of acute endurance exercise following their 12-weeks training protocol.  Free fatty acids (FFA) and triglyceride content in plasma and adipose tissue and cAMP and Inositol triphosphate (PI3) content in epididymal fat were measured immediately after acute exercise using ELISA and were compared among the groups by one-way analysis of variance (ANOVA).
Acute exercise significantly increased lactate concentration in cerebrospinal fluid (SCF) in both T and T+4-CIN compared to the C group. Lactate concentration was slightly lower in T + 4-CIN compared to the T.  Immediately after acute endurance training, a significant decrease of 61 and 31% in plasma triglyceride levels, a significant decrease of 39 and 26% in adipose tissue triglyceride levels, a significant increase of 125 and 56% in plasma FFA levels, a significant increase of 217 and 125% increase in FFA plasma levels, a significant increase of 87 and 41% in adipose tissue cAMP levels, and a significant increase of 90 and 49% in adipose tissue inositol triphosphate levels was observed in the T and T+4-CIN compared to the control group, respectively (all P < 0.01). Plasma triglyceride and adipose tissue levels in the 4-CIN + training group were significantly higher and plasma and adipose tissue FFA levels were significantly lower (all P < 0.05) than the values found in the T group.  In conclusion, the results of the present study showed that lactate can be effective on endurance training-induced adaptations in lipid oxidation due to its action in the brain.

Ehsan Ebrahimipour, Fereshteh Sabet, Shayan Hajebrahimi, Mohammadreza Seyfaddini,
Volume 22, Issue 27 (8-2024)
Abstract

Circadian rhythms play a crucial role in regulating various physiological functions of the human body and can impact the ability tasks. The aim of this study was to investigate the effect of time of day on static and dynamic balance using the cognitive task approach. We recruited 24 elderly men who performed both static and dynamic balance tests with and without cognitive dual tasks. Our statistical analysis, using a significance level of 0.05, revealed significant differences in the parameters of the 95% confidence ellipse, length of path, and average velocity of the center of pressure when performing the dual task compared to normal walking. However, these variables did not significantly differ at different times of the day. Interestingly, our results showed that the center of pressure fluctuations in closed eyes and different times of the day did not have a significant difference. Overall, our findings suggest that healthy elderly individuals are at similar risk of falling during different hours of the day. Nonetheless, the simultaneous execution of dual cognitive tasks leads to balance disruption in both eyes-arm closed positions.

Roghayeh Afzali Nasab Gorohi, Abdolhamid Daneshjoo, Mansour Sahebozamani,
Volume 22, Issue 28 (12-2024)
Abstract

The purpose of the present study was to evaluate the effect of feedback and feed forward neuromuscular training on balance and isometric strength in female basketball players with a high risk of injury in Kerman.20women basketball players of Kerman city purposely selected and who were randomly divided into two groups of feedback and feed forward and performed intervention for 8 weeks, three sessions per week. Dynamic balance and isometric knee strength was measured using Biodex system and MMT device. One way ANCOVA was used for data analyze. The results showed significant differences between pre-post test balance Overall Stability and  internal/external balance and Anterior/Posterior balance (P=0.001).Significant difference was observed in the strength of quadriceps muscle and hamstring between the two groups of feedback and feed forward exercises (P≥0.05).Isometric Quadriceps strength and hamstring in the post- test showed an significantly improvement of  in feedback and feedforward group compared to the pre-test (P=0.001).It can be concluded that neuromuscular training can enhanced balance and isometric strength, of women and training with feedback has more important  than training with feedforward.

Reza Khazaei, Mansour Sahebozamani, Ehsanolla Habibi, Khosro Jalali Dehkordi, Nafise Pishgooie, Banafsheh Parvaresh,
Volume 22, Issue 28 (12-2024)
Abstract

Background and Aims:The necessity and importance of such research, especially among the young is quite tangible. The purpose of the present study was to compare the effect of 8 weeks of corrective selected exercise and combination kinesiotaping and tera band training on the kyphosis angle of adolescent boys with kyphosis. Materials and Methods: In this quasi-experimental study, spinal deformity information of 36 boy students in gym of Esfahan city, 15-18year participated in this study. Then boy student’s participated in an 8-week corrective selected exercise and Combination of Kinesiotaping and Teraband، the end their deformity were evaluated again.For data analysis descriptive statistics ، T tests and SPSS Software was used.The angleof kyphosis in pre-test (48/8± 0/9) after using corrective selected exercise have had a significant reduction (46/9±0/8). Angle of kyphosis in pre-test (49. 1 ± 0.7) after using Combination of Kinesiotaping and Teraband have had a significant reduction (46/97±0/8). Conclusion:corrective exercises alone or in combination with new methods of training, the subjects had a positive impact on improving the kyphosis. But according to the results of this study, no significant difference was found between the corrective exercises with the combined method.

Hamid Abbasi Bafghi, Mohammad Hasan Kordi Ashkezari, Abdolmajid Heratizadeh, Saeed Abedinzadeh,
Volume 23, Issue 29 (7-2025)
Abstract

Introduction and Objective: Ankle injuries are among the most common sports-related injuries, often caused by factors such as "direct contact with a player or the ground, tackles that push the ankle inward or outward, and during jumping and landing." Among these injuries, lateral ankle sprains are one of the most prevalent types, frequently associated with ankle instability. The aim of this study was to compare the effects of balance training and hopping exercises on the proprioception of athletes with functional ankle instability.
Methods: A total of 30 basketball, volleyball, and handball athletes with functional ankle instability, with a mean age of 24.58 ± 3.626 years and a body mass index (BMI) of 25.681 ± 2.126, were randomly assigned to two groups in a clinical trial. The first group (n=15) performed hopping exercises, while the second group (n=15) performed balance training. Proprioception of their ankle joints was assessed at baseline and after six weeks of training. Data analysis was conducted using paired t-tests and ANCOVA via SPSS version 20.
Results: Both balance training and hopping exercises significantly reduced the absolute error in reconstructing dorsiflexion and plantarflexion angles of the ankle (p<0.05). Additionally, the reduction in absolute error for these angles was significantly greater in the hopping group compared to the balance training group (p<0.05).
Conclusion: The findings indicate that both balance training and hopping exercises improve ankle joint proprioception in athletes with functional ankle instability. However, hopping exercises demonstrated greater effectiveness compared to balance training.


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