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Showing 2 results for Ranjbar

Mrs Sahar Khademi, Dr Roohallah Ranjbar, Dr Mohsen Ghanbarzadeh,
Volume 13, Issue 10 (10-2015)
Abstract

The purpose of this study was the effect of eight weeks of circuit training on the Irisin levels and
the Insulin Resistance Index (HOMA-IR) in overweight women. Materials and Methods: In this study 22
overweight women voluntarily were chosen (Age 26.04±4.43 yrs, BMI 29.35±2.53 kg/m2) and were divided
to two groups of control (n=11) and experimental (n=11). In the experimental group, subjects performed
circuit training for eight weeks and four times per week. Blood sample was taken before and 48 hours after
the last training session. Statistical analysis at the level of P<0.05 was done. Findings: After eight weeks of
training, the level of Irisin in experimental group significantly increased while the HOMA-IR had a
significant reduction (p<0.05). Also Pearson correlation co-efficiency test shows that there is a reverse
relationship between irisin and HOMA-IR (P≤0.05). Conclusion: It appears that circuit training improves
body composition and metabolic disorders such as insulin resistance through Irisin induction in overweight
women.


Vahideh Ranjbari, Mehdi Rafei Borujeni, Shahram Lenjannejadian,
Volume 20, Issue 23 (9-2022)
Abstract

Introduction and aim: The kinematic analysis of elite athletes’ performance is an important method to determine effective parameters of sport performances. The purpose of the present study was to compare kinematic characteristics of the upper extremity in adolescence and adult players in three-step shoot in Handball. Methods: Nine elite adult handball players working in the Super League (23.55 ± 2.69 years) and ten teen handball players (16.4 ± 0.69 years) participated in this study. The pictures related to the final stage of the shoot were recorded three dimensionally and analyzed by a graphic interface in MATLAB software. The data related to the angular position, angular velocity and peak angular velocity and position corresponding to the upper limb joints of athletes, including the wrist, elbow and shoulder were obtained. Statistical data were used for analysis through student t-test for two independent groups with significance level p ≥ 0.05 in order to compare two groups. Findings: There were significant differences between two groups in angular position of elbow joint during extension at maximum angular velocity and linear velocity of the ball at the time of the release. Conclusion: it seems that other factors than cinematic characteristics such as anthropometric characteristics along with muscle strength in adult are important to get the maximum velocity of ball release. 

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