فهرست مطالب ebrahim rangraz

Introduction and In old people osteoarthritis of knee has destructive effect on articular cartilage, synovial membrane, articular capsule, ligaments and the bone under cartilage. The aim of this study was to investigate the effect of Thera-Band restistance training on the proprioceptive, motor function, the severity of pain and strength of the older women with knee osteoarthritis.
30 old women with knee osteoarthritis randomly divided into two equal groups control and training (n=15). Evaluated of severity of pain by Visual Analogue Scale (VAS), proprioceptive measurement by goniometer, measure quadriceps and hamstring strength by manual dynamometer, and for analyzing the motor function TUG was used. Resistance training protocol with Thera-Band consist of eight weeks, per session was sixty minute. For analyzing data used on ANOVA with repeated measurements (P<0.05).
The results of statistical analysis showed that performing eight weeks of theraband exercises led to a significant change in the intensity of knee pain, proprioception at 30 and 60 degrees, motor performance, hamstring muscle strength, and quadriceps muscle strength, compared to the control group (P=0.001).
Discussion and Performing resistance exercises of the band improves the pain level, sense of proprioception, strength of the quadriceps and hamstring muscles, and motor function of elderly women with osteoarthritis.

A ritual is a certain chain of behaviors, whose characteristics are arrangement and repetitiveness. The purpose of this study was to investigate the effect of performing rituals on increasing self-control, and to test the hypothesized mechanism of this effect, that is, increased self-discipline. In an experimental design, 111 female students of Islamic Azad University-Karaj branch, were randomly selected and assigned into three groups: ritual movements, non-ritual movements, and control. The ritual movements group performed movements that had sequence and repetitiveness, but the non-ritual movements group performed movements without these two features. Then, the three groups were asked to choose one for eating from cream bread and broccoli, and the selection of broccoli was indicator of higher self-control. Feelings of self-discipline were measured by four questions from Duckworth and Seligman (2005). Logistic regression analysis showed that participants who performed ritual movements, chose broccoli more than participants who did not perform any movement or just performed non-ritual movements. Moreover, mediation analyses showed that rituals have a positive effect on self-control through increased self-discipline.

  age is an  important risk factor for type 2 diabetes mellitus and cardiovascular diseases. The aim of the present study was to investigate the effect of resistance training on serum levels of selected cardiac biomarkers including hs-CTnI and GDF-15 in elderly diabetic men.

This research was an experimental study with a pretest-posttest design. For this purpose, 24 people were selected from among diabetic elderly men (Age: 71.7±6.6 years, weight: 74.1±13.5 kg, body mass index: 26.7±4.4 kg/m2) as research subjects and randomly divided into 2 groups of resistance training (12 people) and control (12 people). The training protocol was designed for eight weeks with three sessions per week, eight movements and each movement with 70% of one maximum repetition for the training group. The control group was also monitored in Kahrizak nursing home without any exercise to compare with the experimental group and to evaluate the effect of eight-week pre-test and post-test blood sampling time. Chemiluminescence and sandwich ELISA were used to measure serum levels of hs-CTnI and GDF-15, respectively. Data was analyzed using SPSS version 24 software.

Serum hs-CTnI levels decreased significantly after eight weeks of resistance training (p=0.001). While, Serum GDF-15 levels did not show significant changes (p=0.71).

Resistance training leads to different outcomes of cardiac biomarkers in elderly diabetic men. However, our data confirm that resistance training may improve cardiac risk factors in elderly diabetic men.

When people want to make an emotional decision, they may avoid information that can make a rational decision stronger. With the aim of investigating information avoidance as a strategy to facilitate emotional decisions and in an experimental design, a call for participation in this study was sent to thirty thousand mobile phone subscribers in Tehran and Karaj and finally 383 people (149 men) with a mean age of 32 years participated in this research. First, participants were faced with rational and emotional choices, and then their information avoidance was measured. Participants were then randomly assigned to three groups and were given the same information they had avoided in three different ways. Finally, participants chose one of the two options and their desire for emotional choice was measured. Z Test and logistic regression analysis showed that most of the participants avoided information, but the same information affected their decisions, the participants who avoided information, chose more emotional choices, and the more the participants desire for emotional choice, the more their information avoidance. So, people avoid information to make emotional decision making easier.

Resistance exercises have beneficial effects on the health of the cardiovascular system and can be an effective treatment for a variety of clinical conditions, such as heart disease. The purpose of this study was to determine the effect of resistance training on serum hs-CTnI and NT-proBNP levels in elderly men. This study was a semi-experimental design with pretest-posttest design. 24 subjects were selected from among elderly men of Karaj (age: 72 ± 25.5, weight: 73.4 ± 13.3, BMI: 27.1 ± 4.1) as the subjects of this study and randomly divided into 2 groups of resistance training (12 subjects) and control (12 subjects). The protocol of resistance training was designed for eight weeks and three sessions per week with eight movements and each move with ten replications for the intervention group. The control group was in control of the Kahrizak sanatorium in order to compare it with the training group and to evaluate the effect of eight weeks of pre and post-test blood collection. To measure serum levels of NT-proBNP and hs-CTnI, the ELISA method and chemi luminescence were used respectively. The reliability of NT-proBNP and hs-CTnI kits were identified by identifiers (ZB-1239-H9648) and (ZB-11753S-H9648), respectively. Validity of the Kits used was determined by a survey of laboratory experts. Data was analyzed using SPSS. 24 software. Serum levels of hs-CTnI and NT-proBNP showed a significant decrease after eight weeks of resistance training (P < 0.05). Also, the levels of NT-proBNP in the training group were significantly reduced after eight weeks of training compared to the control group (P < 0.05). Resistance exercises reduce the levels of prognostic biomarkers of heart disease hs-CTnI and NT-proBNP in older men. Therefore, providing resistance training programs can reduce the rate of atrophy of the skeletal and cardiac muscles and the phenomenon of sarcopenia, which occurs in old age, and maintain the levels of cardiac biomarkers in optimal conditions.

The purpose of this study was to survey the relationship between organizational communications system and interpersonal conflict in physical education offices of Alborz province. The research methodology of this research was a descriptive and correlative and survey study. 55 of employees working in physical education offices of Alborz province were included in the sample which was randomly selected for this study. Researcher made questionnaire was used as investigation instrument. Reliability and validity of study instrument was confirmed through physical education experts and university professors’ opinions; the pilot study as well as its internal validity was found significant by Cronbach’s alpha coefficient. Descriptive statistics (f-frequency distribution, percenta -ge, mean and standard deviation) and inferential statistics (Pearson correlation, t student Levenes) were used in the study. Results showed that there was opposite and significant relationship between organizational communications system and interpersonal conflict in these offices.

Exercises may alter the structure and function of the heart. Achieving the optimum performance of endurance activity depends creates compatibility in different body systems especially in the heart. The purpose of this study is to compare left ventricular structure of young taekwondo athletes’ men and non-athlete ones of Qazvin province.
In this descriptive-comparative study, 15 young and adult athletes are randomly selected and 15 non-athletes are selected by convenience sampling method. Echocardiograph machines Kontron with two-dimensional method, M- mode and Simpson measurement are used to investigate the left ventricular structure of the subject. Validity of Echocardiographic device is examined through a survey completed by cardiologist and reliability of the device is measured by the Pearson Correlation Coefficient P = 0.91. Data are analyzed using SPSS. 18.
The indexes of LVPWD, LVPWS, IVSD, IVSS and LVM (P = 0.001) of left ventricular of athletes are significantly higher than the one of non-athletes. But in the variables of LVEDV (P = 0.022) and LVESV (P = 0.023) there is no significant difference within two group.
The thickness of the walls and left ventricular mass of taekwondo athletes increased but dimensions did not change. Hence, it is suggested that coaches practice aerobic exercises and increase cardio respiratory fitness and left ventricular capacity such as taekwondo through annual examination of athlete's heart structure.

Performance of heart has substantial role in breaking records of sports. Achieving to optimal performance of endurance Training builds upon the consistency in several parts of body specially heart. Type, intensity, term training programs is determining components of providing structural consistency and performance of heart especially in left ventricular. Aim of this research was comparing structure of left ventricular of young Qazvin’s elite male basketball players and non-athletes. Sample of research included 15 athletes were selected randomly with mean age 21.87 years old and 15 non-athletes with mean of 25 year old. We used Echocardiography with two-dimensional and M-mode and measuring Simpson in order to investigate structure of left ventricular. Findings of the research were analyzed by independent samples t test. Results show that in all of variables include (LVPWS, LVPWD, LVM, LVESV, LVEDV, IVS, and IVSD) as indictors of left ventricular is significantly more than non-athletes and it might be due to effect of combined Sports. Thus, we recommend to instructors do echocardiography each year before heavy training programs in order to ensure about healthy heart of athletes and non-pathological heart and combined exercise more aerobic for improving capacity of ventricular, rapid recovery and following Cardio respiratory fitness in basketball training program.