Investigating the Effect of Light Reaction Exercises on Agility-Quickness and Reaction Time of the U-20 Football Players

The aim of this study is to investigate the effect of light reaction exercises on agility-quickness and reaction time of the U-20 Eootball Players. 20 male football players from the YeniMalatyaspor participated in this study voluntarily. T-test for agility-quickness, foot reaction test with Light-Trainer device for foot reaction speed were done before and after trainings. While the control group continued with the standard training, the exercise group performed the standard training exercises with Light-Trainer device for eight weeks. According to the results, the exercise group improved statistically (p<0.05). İt was observed that the exercises performed with Light-Trainer device had positive effects on agility-quickness and reaction speed over U-20 football players and  improved their features. İt was thought that such education would be very useful in the cognitive training of young athletes

The investigation of the depression levels of parents of children with autism

The aim of this study was to investigate the depression levels of parents of children with autism. The depression levels of mothers (N=35) and fathers (N=23) of autistic children educated in special education and rehabilitation centers were examined. In this study, socio-demographic features i.e., gender, age, education of mothers and fathers, occupation, were collected and the Beck Depression Inventory was applied to the parents to determine the risk factors of depression, symptom levels. The inventory includes 21 phrases of self-evaluation and possible scores range from 0 - 63. In the statistical analysis of the data, frequency values were applied to the evaluation of the demographic status. The mean and standard deviation were determined to evaluate the depression levels. T-tests were performed to compare the depression levels of mothers and fathers. An Anova test was performed to assess the relationships between the parameters. As a result, it was determined that mothers of autistic children have medium levels of depression (18,80±11,05), and fathers of autistic children have mild levels of depression. T-test analysis showed no significant differences between depression levels of mothers and fathers (p&lt;0,05). Additionally; when income rates, occupations and educational status parameters were taken into account there was no significant difference according to the Anova test (p&lt;0,05). In conclusion, mothers of autistic children have higher depression levels than the fathers

The Effects of Biomechanical Factors to Teach Different Hook Punch Techniques in Boxing and Education Strategies

The aim of this study was to investigate the effects of biomechanic factors to teach different hook punches in boxing. Eight light middleweight boxing athletes (mean age±SD 19.00±2.00 yrs, mean height±SD 173.88±3.89 cm, mean weight±SD 64.25±4.66 kg) participated in this study. Athletes performed a trial using three different hook punch techniques on a sandbag. The techniques were recorded using eight cameras using a frequency of 120 Hz. Qualisys Track Manager was used to analysis on motion. Mean acceleration of the sandbag, stride length, angles of the knee, shoulder, and elbow were calculated. The forces of impact were also calculated. Hook punch data were compared with Friedman test using SPSS 20.0. The results indicated a significant difference was found only in stride length. Stride length using a southpaw stance was shorter than the other stances (p<0.05). Athletes need more practice increasing stride length and use a repeating method in Mitt workout, models, sandbag trainings, self- monitoring and regional trainings

THE KINEMATIC ANALYSIS OF THE GRAB, REAR TRACK AND FRONT TRACK START IN SWIMMING

The aim of this study was to determine the differences in the kinematic parameters between the grab and track starts (rear-weighted track and front-weighted track). Ten elite male swimmers (mean age± sd 11.3±2.3 years, mean height 152.3±5.6 cm, mean weight 48.2±3.9 kg) participated to this study. Swimmers performed three trials with three different starts technique in indoor pool. Data were recorded directly to the computer by using two basler a602f cameras at 100 hz. and records were analyzed after the test using simi motion 8.5.7 program. The study examined the four kinematic parameters: flight length (FL), flight time (FT) block time (BT), entry time (ET). The kinematic data were compared with friedman test using spss 11.5 program. Based on the comparsion results, it was found statistically significant difference in the parameter FL (p<0.05). Also, the difference between other parameters (FT, ET, BT) is not statistically significant. The flight length during grab start is longer than during front track starts

3D Biomechanical Analysis of Targeted and Non-Targeted Drag Flick Shooting Technique in Field Hockey and Training Strategies

3rd International Conference on Lifelong Education and Leadership for All (ICLEL) -- SEP 12-14, 2017 -- Politechnica Univ Porto, Porto, PORTUGALWOS: 000464901900122This study compared targeted and non-targeted drag flick field hockey shooting techniques in the penalty corner area, using a three-dimensional kinematic analysis. Eleven male field hockey players (mean age 19,82 +/- 1,40 years) participated voluntarily. Seven high-speed cameras (Oqus 7+) with 120Hz refresh rates were used. Field calibration was completed via the wand method. The data was evaluated in two phases: starting and fmishing. Players undertook three drag flick shots to the box using targeted and non-targeted techniques. The angular kinematics and stroke force applied to the stick were analyzed using the Qualisys Track Manager Program V2.12, and ball velocity statistics were gathered with the SPSS 18.0 program. To make an accurate target shot the players attempted to maximize their targeted shooting rates, particularly by decreasing the speed of their lower extremities.Escola Super Educacao, Sakarya Uni

The kinematic analysis of 3 repeated 200 metres freestyle swimming performances of swimmers aged 13-15 years: The kinematic analysis of 3 repeated 200 metres freestyle swimming

The aim of this study is to investigate the differences in kinematic parameters of freestyle swimming with respect to young swimmers before and after 3x200 metres (m) performances. Seven male swimmers (mean age: 13.86±0.90; mean height: 164.79±6.89cm; mean mass: 54±5.54kg) participated in this study as volunteers without any injury history. Before the test, the cube calibration was used to calibrate the field for calculation of kinematic parameters. Also, appropriate warming time was given to all participants and then, reflector markers were attached to their selected joints. When the swimmers were ready, they were asked to perform 3x200m freestyle, and their performances were recorded by four underwater cameras (60hz). Stroke length, stroke rate, stroke count, and end time were calculated as performance parameters, while the values of segmental angles were calculated as kinematic parameters using SIMI Motion, version 8.7.2. The differences between the beginning of the first 200m and end of the third 200m performances with respect to kinematic parameters were identified using Wilcoxon Test in SPSS 18.0 (SPSS Inc., Chicago, IL, USA) program. Also, the relationships between performance parameters and kinematic parameters were assessed using Pearson Correlation Cofficient. The results of this study indicate that there is a positive relationship between elbow angle and stroke count (r=.946). Also, there is a negative relationship between stroke length (r=-.934) and stroke rate (r=-.867) at the pull phase, while there are significant relationships between wrist angle, velocity (r=-.838) and end time (r=.824) at the push phase (p&lt;0.05). Keywords: Biomechanics; Freestyle; Swimming; Kinematic analysi

ACUTE EFFECTS OF STATIC STRETCHING, DYNAMIC EXERCISES, AND HIGH VOLUME UPPER EXTREMITY PLYOMETRIC ACTIVITY ON TENNIS SERVE PERFORMANCE

The purpose of this study was to compare the acute effects of static stretching; dynamic exercises and high volume upper extremity plyometric activity on tennis serve performance. Twenty-six elite young tennis players (15.1 ± 4.2 years, 167.9 ± 5.8 cm and 61.6 ± 8.1 kg) performed 4 different warm-up (WU) routines in a random order on non-consecutive days. The WU methods consisted of traditional WU (jogging, rally and serve practice) (TRAD); traditional WU and static stretching (TRSS); traditional WU and dynamic exercise (TRDE); and traditional WU and high volume upper extremity plyometric activity (TRPLYP). Following each WU session, subjects were tested on a tennis serve ball speed test. TRAD, TRSS, TRDE and TRPLYO were compared by repeated measurement analyses of variance and post-hoc comparisons. In this study a 1 to 3 percent increase in tennis serve ball speed was recorded in TRDE and TRPLYO when compared to TRAD (p< 0.05). However, no significant change in ball speed performance between TRSS and TRAD. (p> 0.05). ICCs for ball speed showed strong reliability (0.82 to 0.93) for the ball speed measurements.The results of this study indicate that dynamic and high volume upper extremity plyometric WU activities are likely beneficial to serve speed of elite junior tennis players