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The impact of high-intensity interval training on cardiometabolic factors in adults with overweight and obesity: a systematic review and meta-analysis
Dr Fatemeh Kazeminasab, Miss Motahareh Mohebinejad, Dr Karim Azali Alamdari,
Volume 0, Issue 0 (11-2019)
Abstract
Background and purpose: Excessive fat deposition is associated with cardiovascular diseases, diabetes as well as hypertension. The aim of this study was to determine the net effect size of high intensity interval training (HIIT) on some factors associated with insulin sensitivity in adults with overweight and obesity.
Materials and methods:  A search for English articles was conducted in Web of Science, Scopus, and PubMed databases without limiting the year of publication until February 2023. To calculate the effect size, WMD and 95% confidence interval were calculated using random effect model. Fixed effect model meta regression was used to determine treatment effects associations with other variables.
Results: In total, 13 studies with 446 adults with overweight and obesity (149 females, and 317 males) with 24.7-57 years old were included in the present meta-analysis. The results showed that HIIT caused a significant decrease in fasting glucose [WMD=-8.65 mg/dL, P=0.002], fasting insulin [WMD=-1.88 U/L P=0.005], and diastolic blood pressure (DBP) [WMD=-3.33 mmHg. Weak correlations were observed in between HIIT’s net effect on DBP and insulin (r=-0.32, p=0.019) as well as with subjects’ age (r=-0.29, p=0.037) respectively in meta-regression assessments.
Conclusion: The rate of DBP reduction is sharper and these changes are also correlated with age. Therefore, HIIT is suggested as a Non-pharmacological Approach to prevent against future cardiometabolic risk factors in this population.
 
Prediction of height and time of jump in elite female volleyball players with selected kinematic variables
N Shaterkazemi, Sh Zandi, E Shirzad,
Volume 18, Issue 19 (7-2020)
Abstract
Regarding the effects of the kinematics of the movement on athletic performance and the Importance of promoting athlete’s performance on the sport fields, there is limited knowledge about the mechanism of the effect of different variables of volleyball spike. Therefore, the aim of this study was the prediction of jump performance in elite female volleyball players with selected kinematic variables.  Thirty elite female volleyball players with mean age of 21.44±3.42 have volunteered for this study. Lower limbs kinematics have been recorded using 16 reflexive markers with Vicon motion analysis system during volleyball spike jump performance. Jump height and time of concentric phase of jump have been predicted by center of mas velocity during step, final step length and ranges of the motion of hip, knee and ankle with stepwise regression (α≤0.05). The results showed that knee range of motion center of mass velocity and step length could be the predictors for time of jump and center of mass velocity and hip range of motion could be the predictors for the jump height as well. Considering these results and the goal and situation of the volleyball match, the players should focus on different phases and affecting variables of the spike jump.
 

The effect of comprehensive sports rehabilitation protocol on resting levels of Neurotrophin-4/5 (NT-4/5), anthropometric and functional variables in patients with multiple sclerosis with different levels of disability
Abdolreza Kazemi, Fatemeh Khajepor, Alireza Sharifabadi, Mahdi Madahi,
Volume 18, Issue 20 (11-2020)
Abstract
Due to the positive affect of the training on the improvement of MS, "the effect of the comprehensive training on neurotrophin- 4/5 and other variables in women with MS" was investigated. Experimental groups (A, B, and C) performed their intervention. Based on the level of disability, different training was used. Control groups (A, B, and C) received only stretch training. At first, all pre-tests were performed and then the experimental groups performed their exercises during 12 weeks. At the end, depended variables were measured and ANCOVA was used. According to the results, showed that rehabilitation protocol has no effect on the levels of neurotrophin 4/5 in MS patients at levels A and C (P=0.504 and P=0.083) but significant increase observed in B level (P=0.010). The results also showed that at level A: BMI, fat percentage, speed and VO2max, and at level B: weight, BMI, fat percentage, endurance, dynamic balance, waist circumference, hip circumference, WHR and VO2max had a significant improvement. On the other hand, at level C, only BMI, fat percentage and VO2max were significantly improved. These results show that rehabilitation exercises have a positive effect on these variables and can increase the quality of life in these patients.

The Combined Effect Of Aerobic Exercise And Vegetarian Diet On Blood Pressure In Adults With Overweight And Obesity: A Meta-Analysis Systematic Review
Fatemeh Kazeminasab, Mohammad Hossein Mahboobi, Karim Azali Alamdari,
Volume 22, Issue 27 (8-2024)
Abstract
The purpose of this study was to investigate the impact of combining aerobic exercise (AE) and vegetarian diet (VD) on blood pressure and body weight in adults with overweight and obesity. The PubMed, Web of Science, Scopus, and Google scholar databases were searched until February 2023 for English articles, and 1065 articles were found. Meta-analyses were performed to compare the impact of aerobic exercise and vegetarian diet on body weight, blood pressure in adults with overweight and obesity. Data analysis was performed using random effect model and weighted mean differences (WMD). The results of meta-analysis of 25 studies with 10192 adults showed that combined aerobic exercise and vegetarian diet significantly decreased in body weight [WMD=-4.63, p=0.001] , systolic blood pressure [WMD=-6.94, p=0.001] , and diastolic blood pressure [WMD=-4.5, p=0.001] , in adults with overweight and obesity.  Aerobic training alongside vegetarian diet as a non-medication approach for weight loss and blood pressure control in adults with overweight and/or obesity. In addition, aerobic exercise and vegetarian diet with both types of duration (less than 12 weeks and more than 12 weeks) cause a significant decrease in blood pressure in adults with overweight and obesity.

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