PBXN-109EB is a new plastic bonded explosive containing energetic binder system NHTPB NPB, RDX and Aluminum that has better performance and energetic properties than PBXN-109 with inert binder system. In this work, at first, morphology of PBXN-109EB was investigated by Scanning Electron Microscopy (SEM) and then thermal behavior and its kinetic parameters of thermal decomposition were extracted via kissinger method by Differential Scanning Calorimetery (DSC) technique in various heating rates. After wards, some of the safety tests for insensitive munitions (such as fast cook off, inductive explosion, bullet impact and fragment impact tests) were performed on the sample and approved its insensitivity. Moreover, lead block (trauzl) and dent tests for comparison betweenexplosion power of PBXN-109EB with PBXN-109 were performed. Results showed that the explosion power of PBXN-109EB enhanced 13 % and 33 % related to PBXN-109 based on trauzl test and dent test, respectively.

Training methods and different ways to prepare and brilliant results considered by coaches and athletes was in competitions, therefore Considering the importance of plyometric training in improving athletic performance, the purpose of this study was to the effect of Eight weeks of plyometric training on anaerobic power, fatigue index, explosive legs strength and agility Freestyle wrestlers city of Malekan was 15 to 17 years old. The method of study was semi-experimental and statically population of that 15 to 17 years old 78 freestyle wrestlers had formed the city of Malekan. Therefore, 24 wrestlers qualified for the random sample selection of the target population and based on the results of the fatigue tests matched pairs were divided into two groups of 12 plyometric and control and again after eight weeks of training protocols from both groups were tested. To analysis the data, t-test and paired t-test was performed using the software spss version 19.The findings showed that: after eight weeks of plyometric training, maximum power, power minimum, average power, explosive legs strength and agility was observed a significant difference between two groups (P≤0/05) but the fatigue index of were not significantly different. It seems that wrestlers to increase aerobic capacity, improve the fatigue index, increased explosive leg strength, improve agility and plyometric training with emphasis on respect for the athletes in the physical characteristics of the study sample use

In recent years, the interaction effects between duration and number of session per week was attractive for health investigators. According to this idea, The purpose of present study a randomized trail to compare the effects of dose response on fitness variable on sedentary adolescence boys. 48 students volunteers with sedentary boys were randomized to four groups with mean SD of age included: two session group (2S): N=12, 13.3 2.3 years, three sessions group(3S): N=12, 13.5 2.7years, four session group(4S): N=12, 13.7 3.1 years, control group(CG): N=12, 13.3 3.4 years. 2S training program included running with 60 -70 HRmax, 25-35 min, 2 day/wk and 3S training group preformed 17-25 min running with same intensity, 4S training group preformed 12-15 min running with same intensity day/ w for 12 weeks. Physical fitness variables which preformed in Training programs include muscular endurance, flexibility and agility. Data analysis by one ways of ANOVA and Benfroni post hoc test showed that: hand power, speed, cardio respiratory, flexibility variables had improved significantly P<0.05 at three experimental group. But in balance, coordination, power, agility, muscle endurance had improved significantly P<0.05 at three and four session group rather than control group. In whole, performing two training programs had useful adaptation and changing the number of sessions has affected on only improvement rate, but in case of agility, the effect of changing the number of session was more than whole training duration per week. In whole, performing three training programs had useful adaptation and changing the number of sessions has affected on only improvement rate, but in some cases such as balance, coordination, power, agility had needed to exercise with session more, and increase of training sessions do n`t have effective on flexibility.

Anaerobic power, which is one of the components of physical fitness and vital motor ability in sports requiring short and long term activities with maximum power output. The purpose of this study was to investigate the effect of acute consumption of 6 milligrams of melatonin on anaerobic power and short-term performance of girls Student was a nurse. Twelve (21.5 ± 1.29 years old, 58.63 ± 2.69 pounds, 39.8 ± 4.17 mg / kg / min) were selected randomly and crossed to 2 The supplementation phase (6 mg melatonin) and placebo (starch capsule) were evaluated. The anaerobic power was measured by the Wingate test, the upper and lower explosive strength, respectively, by means of the Madison Wing Ball and jump length, as well as the power of the duplex by the dynamometer, respectively. The results showed that using 6 milligrams of melatonin, a significant increase in anaerobic power was observed in melatonin compared to placebo (P <0.05); however, short-term performance after melatonin administration did not change significantly (P≥0.05). The short-term use of melatonin seems to increase the anxiety of female students in nursing education, but it does not affect the long-term short-term efficacy.

The aim of this study was to investigate the effect of three methods of plyometric training on explosive strength of hands and legs of adolescent male volleyball players. This semi-experimental study was conducted as a field with three groups. The population consisted of all adolescent volleyball players of Hidaj and Khorramdareh cities (mean age 16.14±1.02 yr, height 177.36±5.92 cm, weight 67.91±8.148 kg, BMI 21.55±2.08 kg/m , VO2max 54.36±4.92 ml/kg/min). Statistical sample consisted of 36 adolescent volleyball players who were divided randomly into three groups (each group 12 subjects) (lower limb, upper limb and combined). At first, a pretest of dependent variables was administered for the three groups. Then, all three groups participated in a plyometric training program for 8 weeks and 2 sessions per week and finally posttests were conducted. Data were analyzed using SPSS20 and analysis of variance with repeated measures at a significance level of P≤0.05. The findings showed that the main effect and the interaction were significant in all three variables (block jump, spike jump and medicineball throw) (P≤0.05). There was a significant different only in medicineball throw among the groups (P=0.036). Bonferroni post hoc test results showed a significant difference between upper and lower limb in favor of upper limb group (P=0.043). Finally, the results showed that according to the good progress of combined group in the three variables and a concurrent need of volleyball for explosive strength of upper and lower limbs, combined training method was suitable.

The recognition of physical fitness and functional capacity of military personnel is one of the important concerns of the armed forces of the country. This study aimed to compare the factors of physical fitness including flexibility, agility, speed, aerobic power, anaerobic power and explosive power among the graduates. For this purpose, 100 students selected from among athletes in Imam Ali University and Shahid Sattari Aeronautical University based on convenience sampling method. Then, all subjects were taken rast test, Sit and reach Hugo corrected test, 36m speed test, Sargent jump test, Illinois Test and Cooper test in three sessions in three days (one week between each session). To analyze the data, Kolmogorov-Smirnov test was first used to determine the normality of the data and the independent t-test was used to examine the differences between the two groups and the SPSS software (V. 22) was used. The results showed that there is a significant difference between the two universities in the speed variables (p = 0.0001), agility (p = 0.0001), explosive power (p = 0.0001), aerobic power (p = 0.0001) and anaerobic power (p = 0.0001). According to the results, it is concluded that physical fitness factors are different among the graduates of Imam Ali University and Shahid Sattari Aeronautical University.

Strength and power are important factors in fencing. But today there is no any consensus on valid way to evaluate them. The aim of this study was to comparison of jump kinetic and its relationship with lunge technique in national and club flouriest fencers. 8 female foil fencers include 4 national and 4 club were participated in this study. Muscle power, mechanical energy and push off ground reaction force were measured using force plate and lunge speed was measured using integration of horizontal ground reaction force curve. The results of this study shown that there is significant relationship between power in squat jump and drop jump with lunge speed and also there is significant differences between these parameters in national and club fencers (P<0.05). Results of this study shown that squat jump and drop jump are strong tools in determination of concentric strength and explosive power of lower limb in fencers respectively. Given the results of this study and importance of these variables in fencing, the mentioned tests could use as appropriate way to evaluation of fencer’s performance.

Participating in sports programs increases physical and mental health and fitness. The purpose of this study was to assess the physical fitness of persons with intellectual disability (ID) who participated in Special Olympics Iran, and comparing with their counterparts who did not participate in the these matches. The research sample included 138 boys with ID in two groups, athletes (70 boys with ID with and without Down’s syndrome) and non-athletes (68 boys with ID with and without Down’s syndrome), aged 18 to 30 years. To assess physical fitness, a set of Eurofit special tests, including explosive leg strength (standing broad jump test), arm strength (pushing a 2 kg ball test), abdominal muscle endurance (sit-up test), speed (20 meter run test), flexibility (sit and reach test), and balance (walk on a bench test) were used. To compare two groups, independent t test for variables of explosive leg strength, abdominal muscle endurance, and speed, and also Mann-Whitney U statistical method for variables of arm strength, flexibility, balance, and body mass index (BMI) were used at a significant level of P < 0.050. There were significant differences in variables of flexibility (P = 0.035), abdominal muscle endurance (P = 0.034), explosive leg strength (P = 0.025), and speed (P = 0.009) between athlete and non-athlete boys with ID with and without Down’s syndrome. Moreover, there were significant differences in BMI (P = 0.041) and speed (P = 0.001) between athlete and non-athlete boys with ID without Down’s syndrome, and also in flexibility (P = 0.030), abdominal muscle endurance (P = 0.001), explosive leg strength (P = 0.001), and speed (P = 0.002) between athlete and non-athlete boys with Down’s syndrome. According to the results, the participants in Special Olympics Iran had a better level of physical fitness than those without this experience. Therefore, Special Olympics programs are recommended as an effective factor in improving the physical fitness of boys with ID.