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Showing 6 results for Seif

P Seif, M.r Dehkhoda, H Rajabi,
Volume 9, Issue 1 (3-2011)

In this study, the effects of vibration training on physical fitness factors in elderly
females investigated. 40 subjects with age 61/09±6/24 yrs, weight 65/84±11/98
kg, height 156/99±5/06 cm and body mass index 26/64±4/23 kg/m2 voluntary
participated in this study and were divided in vibration (n=16), non-vibration
(n=14) and control (n=10) groups. The vibration group performed exercises on
the device (JET VIB) for 10 days with 35-40Hz frequency, 12 mm amplitude and
eight positions. The non-vibration group performed the same exercises (in
position, set and time) on the turned off device. The control group did not
exercise during the study. Leg and hand strength (dynamometer), flexibility (sit
and reach), balance (standing time on one leg) and body composition (skinfold
with caliper) were measured. Paired sample t test and one way ANOVA used
for data analysis. In within group analysis, vibration group showed significant
increase in right (p=0/02) and left hand strength (p=0/01), leg strength
(p=0/008), Flexibility (p=0/005) and left leg balance (p=0/006). In non vibration
group just significant increase in right hand strength (p=0/01). There was no
significant change in control group. Between group analysis showed, significant
increase in right (p=0/006) and left hand strength (p=0/003), leg strength
(p=0/004) and left leg balance (p=0/01) in vibration group comparison with to
other groups. There was no significant change in right leg balance (p=0/),
Flexibility (p=0/005) and body composition in any of groups. Due to the results
short term vibration training can improve flexibility, strength and balance in
elderly subjects.

Sasan Naderi, Dr Fariborz Mohammadi Pour, Dr Mohammad Reza Amir Seifo Dini,
Volume 13, Issue 9 (4-2015)

The purpose of current study was to investigate the spatio-temporal gait parameters and knee varus angle
during walking at different speeds in young with knee varus. 18 subjects with varus deformity classified at
grade 3 of bowleg and 17 healthy subjects, volunteered to participate in this study. The following variables
include stance, swing, double support and cycle time, cadence, stride length, angle of varus at the heel
contact, midstance and toe off when walking on the treadmill at speeds of 80, 100 and 120 percent of
preferred walking speed, were measured from using the three-dimensional motion analysis system with six
optoelectronic cameras. The results of between-group tests showed that spatio-temporal gait parameters
in the varus group is similar to the normal group. Also varus angular variables in varus group, was indicate
higher values in comparison to the healthy group, but there were no significant differences. The results of
inter-group tests also showed the knee varus angle generally increases with increasing speed, that none of
the differences were not significant. According to the results, the increase in walking speed will caused to
increase knee varus angle. Therefore, walking with speed less than the normal walking speed, probably is
a suitable solution to reduce the loads exerted on the knee joint and prevention of premature osteoarthritis
in young with knee varus.

Mr Mohammad Ali Naseri Rouhani, Dr Mohammad Taghi Amiri Khorasani, Dr Mohammad Reza Amir Seifaldini,
Volume 14, Issue 11 (4-2016)

Objective: The aim of this study was to investigate the effect of non- stability surface of support leg on the instep kicking kinematics in soccer players. Materials and Methods: 30 male soccer players participated in this study. After the measurement of static and dynamic balance tests by the Biodex System, 20 players were selected who were at a desired level of the balance. Data were recorded using the three- dimensional motion analysis system with 6 optoelectronic cameras (200 HZ). The kinematic parameters in three critical moments of kicking (Forward swing of hip, Contact to ball, Follow through) were compared by using repeated measures of variance and independent t- test (0/05). Results: The results showed that the values of maximum angular velocity and displacement of hip and velocity of ball at the kicking over stability surface was significantly higher from the kicking over non- stability surface. Conclusion: These results indicate that the kicking over non- stability surface causes the lower of kinematic parameters in the more of the kicking skill phases and the movement prime velocity of ball

Mr Reza Amini, Dr Hamid Rajabi, Dr Mohamad Reza Amir Seifadini, Mr Koros Divsalar,
Volume 14, Issue 12 (10-2016)

The aim of the study, study of Changes in adiponectin, leptin, and plasma lipid profile of Inactive men the  result 24 session, playing futsal. In this study, 20 healthy men 20 to 30 years old, the experimental group (age: 23/5±2/58, weight: 69/36±14/48, body composition: 22/82±4/41) of controls (age: 24/6±2, weight: 68/22±12/71, body composition: 21/99±3/58) inactive randomly divided into control and experimental groups. Experimental groups in each session, indoor futsal training program for eight weeks and will run three sessions per week, while the control group had normal activity. Before the training program, and 48 h after the last session of play, 5 ml blood samples for measurement of adiponectin, leptin, and plasma lipid profile, blood was collected from the participants. After 48 hours of the last training session before the test was re-sampled in the same conditions. T-test results showed that exercise increased adiponectin and high-density lipoprotein and decreased leptin, low density lipoprotein, lipoprotein (a), triglycerides and cholesterol are, however, differences in adiponectin was not significant (P≤0.05). Overall, this study can be taken that these exercises in a short period of eight weeks futsal, adiponectin does not cause significant changes but the significant changes in leptin, high-density lipoprotein, low density lipoprotein, lipoprotein (a), triglycerides and cholesterol in the blood plasma.

Homa Sheikhani Shahin , Davood Mehrabani , Seifollah Dehghani Nazhvani, Hamid Rajabi, Manijeh Norouzian ,
Volume 20, Issue 23 (9-2022)

The aim of this study was to the effect of aquatic activity and alogenic bone marrow derived mesenchymal stem cells fortified with Platelet-Rich Plasma in treatment of Achilles tendon in rat.  74 Sprague-Dawley rats were selected and tendon injury was formed in 69 of them. Subsequently, these rats were randomly divided into 8 groups and 5 rats which were without any injuries were chosen as the control group.  72 hours after the surgery, isolated cells from bone marrow and PRP were injected to the groups via catheters. The experimental groups had aquatic activity for 8 weeks. At the end of the eighth week, the Achilles tendon was separated and H&E and Mason Trichrome were used for special staining to assess the tendon healing. The results show there is a significant difference between the studied groups on the Achilles tendon healing. Also, results from histopathological examination indicated that there is a significant difference between the studied groups on the number of fibroblasts, collagen deposition, cellularity and tendon diameter. It could be generally concluded that, using these treatment methods could help with the tendon healing through bounding with target cells membrane receptors such as fibroblasts, mesenchymal stem cells and endothelial, which leads to activation of a series of intracellular proteins and as a result of their activities some reactions happen that lead into formation of matrix and collagen synthesis.
Mr Mojtaba Iranmanesh, Dr Mansour Sahebozamani, Dr Mohammadreza Amir Seifadini,
Volume 21, Issue 25 (9-2023)

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.

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