جستجوی مقالات مرتبط با کلیدواژه « گرم کردن » در نشریات گروه « تربیت بدنی »

Netball smart and FIFA +11, are widely used as warm-up programs to prevent athlete injuries. But so far the effectiveness of these two warm-up methods has not been compared on the two-dimensional kinematics of active men. The aim of the current study was to compare the effect of FIFA +11 and Netball Smart warm up programs on the two-dimensional kinematics of the lower extremity during the single-leg squats and single-leg hop test.

40 active male college soccer players (age: 23.4 ± 1.0 years) were randomly divided into the Netball smart (n=20) and FIFA +11 (n=20) groups. Each group perform the injury prevention program as a warm-up before training session, three sessions per week for six weeks. Before and after the training protocols, the kinematic variables of the lower limbs were captured in single-leg squat test and single-leg hop test with using two-dimensional cameras. The videos were then evaluated to measure variables using Kinovia software.

After six weeks of intervention, all the kinematic variables of the lower extremities in both the Net Ball Smart and FIFA 11+ groups show significant changes compared to the pre-test. However, changes in the kinematic variables in the post-test were not significant between the two groups.

The finding of the present study showed that FIFA 11+ and Netball smart training can effectively improve the risk factors of ACL injury in active individuals. According to our findings, FIFA 11+ and Netball smart have similar effects on lower limb biomechanics.

Warm-up is one of the factors that influence the success and improvement of athletes record. The post-activation potentiation can be considered as one of the new methods of warm-up. During fast and dynamic activities, there is a high level of neuromuscular activation, so the exercises with maximum loads can activate the central nervous system tocreate suitable condition for explosive activity. The purpose of this study was to investigate the effect of post-activation potentiation in different rest periods on the explosive power of athlete girls.

In this semi-experimental study, 12 female athletes (mean body mass index 21.1 ± 4.40 kg/m2, and age 23.28 ± 1.98 years) performed a countermovement Jump test using force plate. Then, they performed the squat movement with three repetitions, with 85% of one maximum repetition, and after 30 seconds of passive rest, they repeat the same countermovement Jump test. After that, the same test was carried out with one, two, three, and five minutes passive rest. For statistical analysis, theShapiro-Wilk normality test and analysis of variance with repeated measure method and Bonferron's post hoc test were used. All statistical analyzes were performed by SPSS softwareand significant level set at p < 0.05.

The results indicated that the reverse countermovement  Jump in post-tests were significantly higher at 30 second (p=0.001), 1 minute (p=0.001), 2 minutes (p=0.001) and 3 minutes (p=0.001) compared to pre-test, butdespite a slight increase in countermovement Jump with 5 minutes rest, this test did not change significantly (p=0.43) compared to the pre-test.

It seems that the use of squat movement after warm-up will increase the explosive performance, which can be beneficial in power, speed and explosive power sports.

Anterior Cruciat Ligament injuries are common among athletes and even non athletics, 70% of ACL injuries created as a result of a non-contact mechanism. So, the aim of this study was to compare the effects of static, dynamic and injury- prevention Warm-Up protocols on knee valgus during drop landing and single-leg hop test score in active 18-25 year’s men.

36 active subjects selected and randomly were assigned to static, dynamic warm up and injury-prevention programs and pre test of performance and knee valgus angle assessment performed via single-leg hopping test and motion analysis system respectively. After executing three warm-up protocols, the performance and kinematic data’s were taken. To check the normal distribution of data’s, the Kolmogorov-Smirnov test, to between group’s comparison, the analysis of covariance test and to obtaining within groups differences, the paired t-test was used. Also significance value set at 0.05.

The results showed that injury-prevention programs can immediately improve drop-landing technique athletes without creation of malfunction in athletes (P=0/001). But this technique was followed with a negative response after static warm-up protocol (P=0/001) and no change was observed after the dynamic warm-up protocol (P=0/82).

According to the research results the subjects of injury-prevention warm up program than two other groups, benefited from the progression benefits in performance tests and kinematic selected parameters.

The purpose of this study was to examining the relationship among the reasons and types of sports injuries with the rate of their prevalence during sport hours of male high school students in Tabriz in the educational year of 2016-2017. In this study, among Tabriz city schools, 375 students (from 5 regions) by started randomized method of sampling were select (mean age: 13-15 yrs.). This is descriptive – correlational and regarding the purpose it was applied study. Data was obtained by using American Mosher scale of examining sport injuries (α=0/87). SPSS software (version 18), and descriptive statistics (mean, percent,) and inferential statistics (chi square) were used to analyze data. Level of significance was 0.05. Results showed that there is a significant relationship between using covering means in sport and the rate of expression sport injuries. Between the variables of having needed physical preparedness, offering initial assistance, the time of warm up before the practical classes, trainer’s attention to the scientific and professional principles in the program of warm up, methods used for ware up, proportion with the program of warm up with the kind of sport field, the presence of trainer at the time of sport class, sessions of practical classes and the rate of expression sport injuries, there is no significant relationship. Generally, it could be said that by description the methods of preventing sport injuries and facilitating the sport places and using the standard covering means in school sport, it could largely prevent injuries and subsequently improve healthy life.

The aim of the present study was to compare the effects of three warm-up methods (half squat, sled towing and traditional) on some physiological variables and anaerobic power performance in elite athletes. Subjects were 14 trained male athletes. Athletes performed the three protocols in three different days: 1- traditional warm-up 2- PAP warm-up with one set with 3 repetitions of half SQ 3- sled towing PAP warm-up. After each warm-up protocol, the RAST test was conducted. Following the RAST test, subjects’ blood samples were collected to evaluate lactate. For data statistical analysis, analysis of variance with repeated measures was used (significance level: P<0.05). Results showed that the duration of the RAST test reduced after both PAP warm-up protocols compared with traditional warm-up protocol (P=0.001, P=0.006). The maximal anaerobic power reduced in both PAP warm-up protocols compared with traditional warm-up protocol (P=0.001, P=0.005). Lactate level increased only in the sled towing warm-up compared with traditional warm-up protocol (P=0.007). Results showed that both PAP warm-up protocols (half squat, sled towing) can improve RAST test in athletes.

Corresponding Author Address: Department of Physical Education, Faculty of Humanities, Tarbiat Modarres University, Hamid Agha-Ali Nejad, Tehran, Iran.

Regarding the importance of warming and its effect on the physiological mechanisms of oxygen consumption in the recovery period, the present study aimed to investigate the effect of warming intensity on the response to oxygen consumption dynamics of recovery period after continuous maximal exercise in female basketball players. Done.

Seven female basketball players with mean age of 21 /1 1.52 years, height of 166.8 3 3.72 cm, body mass of 60.85 5 5.76 kg and mean body mass index of 21.7 ± 1.72 In this study, the maximum oxygen consumption was 41.44 ± 3.40 ml / kg. After measuring Vo2max, the subjects performed two moderate and intense warm-up protocols in two separate sessions and then continued maximal activity (the Balck and Weir protocols) to reach the exhaustion. All respiratory gases were collected during the activity and 10 minutes from the beginning of the recovery period using a respiratory gas analyzer. Data were analyzed using paired t-test.

According to the results of the study, there was no significant difference between half recovery time and half recovery time (P <0.05).

 Regardless of its intensity, warming improves athletic performance, but the process of changes in oxygen consumption in the recovery period after the two exercise protocols is similar.

The aim of the present study was to investigate the effects of a 12 week Wrestling specific warm-up program on dynamic balance in cadet wrestlers.
The study population included all cadet wrestlers in the city of Rasht from among whom 24 freestyle wrestlers were selected by the convenience sampling and divided into intervention and control groups. The Intervention group performed a Wrestling warm-up program for 12 weeks, three times a week and the control group performed routine warm-up during the same period. Y balance test was used for the assessment of dynamic balance in pre and post phases of the program. Independent samples t test, Dependent samples t test, and p-test were used for data analyses with preset alpha value of p The results indicated that there was a significant increase in reach distance of Y balance test and a significant decrease in the number of wrestlers at high risk in intervention group after implementation of 12 weeks wrestling warm-up program (p It seems that the wrestling warm-up program can improve the dynamic balance. Therefore, it is recommended that wrestlers and coaches use this new warm-up program before the specific training.

Previous studies showed that FIFA program reduces soccer player's sport injuries considerably, but there is limited information about the effect of this program on physical fitness of soccer players. Thus, the aim of this clinical trial was to study the effect of 11 program on performance and physical fitness of adolescent soccer players. 82 soccer players (aged between 14 and 16) from 4 teams participated in this study. The teams were randomly divided into two groups: control and training. Training group participated in 30 weeks of FIFA 11 comprehensive program. The player's performance was measured by a test collection. The players of both groups were tested one week prior to and one week following match season (an interval of 30 weeks). Data were analyzed by ANOVA with repeated measures 2x2. Analysis of data showed a significant group x time interaction in Sargent vertical jump test and Bosco repetitive jumping test. The training group showed more improvement than control group in these tests. But no significant differences were observed in pretest and posttest of Illinois agility, 40 and 20 yards speed, yoyo intermittent recovery level 1, sit and reach and dribbling tests between training and control groups. This study demonstrated that FIFA 11 warm-up comprehensive program can increase Sargent vertical jump and anaerobic power of lower extremity muscles in adolescent soccer players but it did not influence other factors of physical fitness and performance.

  The aim of this study was to investigate the effect of four weeks dynamic warm-up on static and dynamic balance and proprioceptive receptors in skilled female Gymnast For this purpose, 16 skilled female
gymnasts (mean age 9.62±1.45 years, height 130 ±15.62 cm, weight 28.24 ±8.52 kg and BMI 16.27±1.46kg/m2) were selected and divide into two groups [general warm-up (control), and dynamic stretching] randomly. The first protocol included a 10 minute jogging, and the second protocol consisted of jogging and dynamic stretching in muscles used in performing the skill. Subjects were tested before and after acute protocol and four weeks as the using different protocols. The indicators of the equilibrium of) anterior-posterior internal-external) in four static (with
two legs, and with one leg) and dynamic situations (with two legs and one leg) by removing visual input were investigated. Balance assessed with dynamometer system equipped with 7 cameras and Kistler force plate. Statistical analysis of data was performed through ANOVA and the Bonferroni post hoc test at significance level of (p≤ 0.05). The results of this study showed, a significant increase in dynamic balance with both feet and a feet by removing visual input in a state of equilibrium with a dynamic warm-up protocol after four weeks (p=0.001 Also Static balance on two legs and one foot with a dynamic warm-up protocol was significantly increased after four week dynamic protocols respectively (p=0.001, p=0.005). Since the removal of visual inputs can lead to a dysfunction in the postural sway control, Use a dynamic warm-up exercises demonstrated in female gymnast that the fluctuations are significantly reduced compared to the control group in a way that improves there in the balance performance

Thus the aim of this study was to evaluate the effectiveness of FIFA 11 Warm-Up Program in reducing the rate of sport injury in young male soccer players. Thirty five teams from youth league of Iran participated in this study. Teams were randomized to an intervention or a control group. Teams in the intervention group performed the at least twice in week as warm up prior training throughout the season. All participants of the control group continued their practice sessions as usual. All soccer-related injuries and player exposure to practice sessions and matches was reported weekly by the coaches and medical staff. During season, we recorded 1220 soccer related injuries. Poisson distribution showed that the overall injury rate in the training group (14.1 injuries/1000 player-hours) was significantly lower than overall injury rate in the control group (24.3 injuries/1000 h), (P

The purpose of this study was to investigate the effects of static stretching with different durations on strength and range of motion (ROM) of wrist in female rock climbers. For this purpose 10 rock climber females with the mean age of 20.1±5.26 participated in the study, voluntarily. Subjects randomly performed one of the 30, 60, 120, and 240s static stretching protocols, or control condition (180s rest), with 2d in between. Before and after interventions, strength and ROM of wrist were measured. Results showed that ROM increased after 30, 60, 120, and 240s static stretching protocols (p=0.002, p=0.001, p=0.000, and p=0.000); however, strength decreased in the control and 120s and 240s groups (p<0.01), and the amount of decrements were significantly different with the slight insignificant increment in the 30s group. performing short-term static stretching during warm-up could increase ROM without negative effect on strength.

Previous studies showed FIFA comprehensive warm up program reduce sport injuries but to date there is limited information on how such programs affect dynamic balance of soccer players. To study the effects of a structured injury prevention program، 11+، on dynamic balance among adolescent male soccer players between 14 and 16 years of age. Sixty six adolescence players (34 training، 32 control) aged 14-16 with no lower extremity injury from four youth male amateur soccer teams were included in the cluster randomized controlled trial. The teams were randomized two and two in control and training groups. Training-group subjects participated in a 30 weeks FIFA comprehensive warm up program 11+ that included plyometrics، core muscle strengthening، balance، and running exercises. These exercise performed at least twice a week as warm up. The control group performed its’ usual training. Dynamic balance was evaluated with Star Excursion Balance Test (SEBT). The SEBT was administered prior to and following 30 weeks of 11+ program in the training and control groups. Data was analyzed with separate 2×2 repeated-measures analysis of variance (ANOVA). The between-subjects variable was group (2 levels: control، training) and the within-subject variable was time (2 levels: pre، post). Paired sample t-test and t-test for independent groups used to analyze within and between subjects data. The 11+ training group showed statistically significant increases in anterior، Anteriomedial، Medial، Posteriomedial and lateral reach direction at the posttest compared with the control group (P <. 05) using the SEBT. The study demonstrates that 11+ training program can increase the dynamic balance capabilities of adolescent soccer players.

The aim of this study was to compare dynamic movement, dynamic stretching and preexercise massage protocols on Explosive power of elite sprinters.

Eighteen volunteer male, selected in dynamic movement, stretch and massage groups randomly. In pretest state, athletes ran ten minutes on treadmill and performed both treadmill and specific warm up for 20 minute in post test. Margarya-Kalaman test used before and after (first and tenth minutes) protocols for explosive power measurement. For data analysis both mixed ANOVA with repeated measures and one way ANOVA method were used.

Results showed that explosive power in three groups in first minute increased significantly (p<0/05). But this index only in massage was significant in tenth minute (p<0/05). Also, explosive power in between dynamic movement and pre-exercise massage groups in first minute differed significantly (p<0/05). But this index didn’t differ between groups in tenth minutes significantly (p>0/05).

Therefore, dynamic stretching and massage were best interventions (warm up protocols) for explosive power in first and tenth minute orderly.