Mitat Koz

The Relationship Between Body Composition, Anaerobic Performance and Sprint Ability of Amputee Soccer Players

The purpose of the present study was to investigate the relationship between body composition, anaerobic performance and sprint performance of amputee soccer players. Fifteen amputee soccer players participated in this study voluntarily. Subjects’ height, body weight, body mass index, body fat percentage (Jackson and Pollock formula) and somatotype characteristics (Heath-Carter system) were determined. The sprint performance at 10m, 20m and 30m was evaluated, whereas the counter movement jump (CMJ), relative CMJ (RCMJ), squat jump (SJ) and relative SJ (RSJ) tests were used for the determination of anaerobic performance. The results of the Pearson Product Moment correlation analysis indicated that body composition was significantly correlated with CMJ and SJ (p < 0.01), on the other hand, no measure of body composition was significantly related to the other component (p > 0.05). A significant correlation was found between CMJ, RCMJ, SJ, 10 m, 20 m and 30 m sprint performance (p < 0.05); whereas, in contrast, no measure of body composition was significantly related to the 10 m, 20 m and 30 m sprint performance (p > 0.05). In conclusion, the findings of the present study indicated that sprint performance was described as an essential factor in anaerobic performance whereas body composition and somatotype play a determinant role in anaerobic and sprint performance in amputee soccer players.

Physical Fitness Differences between Freestyle and Greco-Roman Junior Wrestlers

Abstract The aim of the present study was to examine physical fitness differences between Freestyle and Greco-Roman junior wrestlers. One hundred twenty-six junior wrestlers, comprising 70 Freestyle and 56 Greco-Roman wrestlers, participated in this study. The somatic and physical fitness profile included body mass, body height, body mass index, body composition, flexibility, maximal anaerobic power of the legs and arms, aerobic endurance, hand grip strength, leg and back strength, and speed. No significant differences were found in the anthropometric and physical features between Freestyle and Greco-Roman wrestlers. The Greco-Roman wrestlers had a significantly higher level of relative leg power, peak arm power, relative peak arm power, and relative average arm power than Freestyle wrestlers (p < 0.05). Greco-Roman wrestlers were significantly faster, had better agility, and had a greater level of leg strength than Freestyle wrestlers, but Freestyle wrestlers were more flexible than Greco-Roman wrestlers (p < 0.05). Discriminant function analysis indicated that peak arm power, agility, speed, and flexibility were selective factors for the differences between Freestyle and Greco-Roman wrestlers. In conclusion, the present study indicates that the differences between these wrestling styles promote physical fitness differences in elite wrestlers. The results reflect specific features of each wrestling style.

Relationship between efficiency of pistol shooting and selected physical-physiological parameters of police

Purpose – The purpose of this study is to investigate the relationship between selected physical-physiological parameters and efficiency of pistol shooting. Design/methodology/approach – In all, 237 male volunteers, studying at a Turkish Police Academy within the age range of 19-20 years old were investigated. The physical fitness levels were evaluated by valid and reliable test batteries. The efficiency of pistol shooting was evaluated by the total points of the bullets which hit the target from 10 m. Findings – Significant differences were found between the sets of students according to shot accuracy groups for wrist circumference, biceps circumference, femur diameter, hand grip strength, flexibility, aerobic capacity, reaction time, balance, coordination, state anxiety level, anxiety variability, average heart rate, maximal heart rate and heart rate changes. The correlation coefficient between the pistol shooting result and change in heart rate, anxiety variability, mean heart rate during shooting, coo...

Comparison of Physical and Physiological Profiles in Elite and Amateur Young Wrestlers

Abstract Demirkan, E, Koz, M, Kutlu, M, and Favre, M. Comparison of physical and physiological profiles in elite and amateur young wrestlers. J Strength Cond Res 29(7): 1876–1883, 2015—The aim of this study is to examine the physical and physiological determinants of wrestling success between elite and amateur male wrestlers. The wrestlers (N = 126) were first assigned to 3 groups based on their competitive level (top elite, elite, and amateur) and then to 6 groups according to their body mass (light, middle, and heavy weight) and their competitive level (elite and amateur). Top elite and elite wrestlers had significantly (p ⩽ 0.05) more training experiences and maximal oxygen uptake compared with the amateur group. In separating weight classes, light- and middle-weight elite (MWE) wrestlers had significantly (p ⩽ 0.05) more training experience (7–20%) compared with the light- and middle-weight amateur (MWA) wrestlers. No significant differences were detected between elite and amateur groups (light-, middle-, and heavy-weight wrestlers) for age, body mass, height, body mass index, and body fat (p > 0.05), with the exception of height for heavy wrestlers. Leg average and peak power values (in watts and watts per kilogram) in MWE were higher than MWA (6.5 and 13%, p ⩽ 0.05). Relative leg average power value in heavy-weight elite (HWE) (in watts per kilogram) was higher than heavy-weight amateur (HWA) (9.6%, p ⩽ 0.05). It was seen that elite wrestlers in MWE and HWE statistically possessed a higher V[Combining Dot Above]O2max (12.5 and 11.4%, respectively) than amateur middle- and heavy-weight wrestlers (p ⩽ 0.05). The results of this study suggest that training experience, aerobic endurance, and anaerobic power and capacity will give a clear advantage for the wrestlers to take part in the elite group.

Effect of two different kinesio taping techniques on knee kinematics and kinetics in young females

[Purpose] The application of kinesio taping may improve strength and performance, inhibit and facilitate motor activity, and increase range of motion. The aim of this study was to compare the effects of kinesio taping facilitation and inhibition applications on spatiotemporal knee kinematics and kinetics during walking activity in healthy subjects. [Subjects and Methods] A three-dimensional quantitative gait evaluation was performed without tape and with, facilitation and inhibition kinesio taping application on the knee. Sixteen healthy female college students (age, 19.7 ± 0.4 years; height, 1.64 ± 3.4 cm; body mass, 51.5 ± 4.8 kg) participated in the study. [Results] Spatiotemporal parameters (cadence, walking speed, stride length) were significantly different among the trials. Knee joint sagittal plane range of motion was not different with either kinesio taping application. Knee external flexion moment during the early stance phase decreased significantly with facilitation kinesio taping and increased with the inhibition kinesio taping. Knee external extension moment during the mid-stance phase increased with facilitation kinesio taping. Knee power parameters, eccentric activity in the rectus femoris during the pre-swing phase was significantly increased with inhibition kinesio taping application, while eccentric activity of the hamstrings during the terminal swing of gait was decreased. [Conclusion] These findings showed that facilitation kinesio taping application affected the terminal stance phase and that inhibition kinesio taping influenced the terminal swing phase compared with the no tape condition.

Comparative analysis of the 1-mile run test evaluation formulae: Assessment of aerobic capacity in male law enforcement officers aged 20–23 years

ObjectivesThe purpose of this study was to compare values of aerobic performance in the 1-mile run test (1-MRT) using different formulae.Material and MethodsAerobic capacities of 351 male volunteers working for the Turkish National Police within the age range of 20–23 years were evaluated by the 1-MRT and the 20-metre shuttle run (20-MST). VO2maxvalues were estimated by the prediction equations developed by George et al. (1993), Cureton et al. (1995) and Kline et al. (1987) for the 1-MRT and by Leger and Lambert (1982) for the 20-MST.ResultsThe difference between the results of the different formulae was significant (p = 0.000). The correlation coefficient between the estimated VO2max using Cureton’s equation, George’s equation, Kline’s equation and the 20-MST were 0.691 (p < 0.001), 0.486 (p < 0.001) and 0.608 (p < 0.001), respectively. The highest correlation coefficient was between the VO2max estimated by the 20-MST and Cureton’s equation. Similarly, the highest correlation coefficient (r = −0.779) was between the 1-mile run time and the VO2max estimated by Cureton’s equation.ConclusionsWhen analysing more vigorous exercise than sub-maximal exercise, we suggest that Cureton’s equation be used to predict the VO2max from 1-mile run/walk performance in large numbers of healthy individuals with high VO2max. This research compares the use of 3 different formulae to estimate VO2max from 1-mile run/walk performance in male law enforcement officers aged 20–23 years for the first time and reports the most accurate formula to use when evaluating aerobic capacities of large numbers of healthy individuals.

The Monitoring of Weight Fluctuation and Hydration Status in Cadet Wrestlers (Ages 14–17) During a Training Camp Period Leading up to Competition

ABSTRACT This study aims to determine the body weight and hydration levels of wrestlers within the cadet super league and to investigate their affects upon performance. Measurements were recorded four times: on the first day of training, which is 17 days prior to competition, three days out from weigh ins, immediately prior to weigh-in and immediately before the competition. During these study periods, body weight and urine specific gravity (Usg) were measured. Body composition was measured in the first round of testing. Results of these measurements were compared to competition results. Body weight and hydration levels did not change significantly until the third day before weigh in (P> 0.05). A significant level of weight loss (% 3.9 ± 2, 7) and an increase in Usg levels (1.024-1.028 g/cm3) were discovered in the last three days before official weigh-ins. However, no significant change in Usg values (P> 0.05) were observed between weigh in and the competition, although a significant weight gain (P< 0.05) was observed. Consequently, it can be shown that although the rapid weight loss and dehydration observed in cadet wrestlers just prior to weigh-ins was followed by a rapid weight gain between weigh-ins and the competition; there was no improvement in the hydration status.