BACKGROUND: The purpose of this study was to comprehensively investigate and compare the architecture of the quadriceps muscle in football, taekwondo, and athletics, shedding light on potential differences and providing valuable insights for athletic training and performance enhancement. METHODS: Thirty-five athletes (football[N.]=14. [7 women, 7 men]; taekwondo [N.]=11. [6 women, 5 men]; athletics [N.]=10. [5 women, 5 men]) aged 17-21 years participated in the study. After participant demographic data were collected, 2D real-time B-mode ultrasound (USG) and right (R) and left (L) leg quadriceps muscle group rectus femoris (RF), vastus intermedius (VI), vastus lateralis, pennation angle (PA), RF cross-sectional area (CSA), and subcutaneous fat thickness were determined. RESULTS: In the study, in female athletes, R-RF+VI (P=0.04, ES:4.34), R-VI (P=0.01, ES: 6.1), R-RF: (P=0.009, ES: 7.9), R-CSA (P=0.04, ES: 5.2), L-RF (P=0.002, ES: 10.4) and L-CSA (P=0.007, ES: 7.7) significant differences were found in favor of the Football group. In male athletes, R-CSA (P=0.004, ES: 9.05), L-RF (P=0.05, ES: 3.5) and L-SFT (P=0.00, ES: 13.6), there was a significant difference in favor of the Football group. L-PA (P=0.009, ES: 6.2). L-PA (P=0.009, ES: 6.2) was significantly higher in the male Taekwondo group. CONCLUSIONS: Our research findings show that there is a significant relationship between the type of exercise performed and the structural differences observed in the quadriceps muscle. Consequently, it is highly recommended to consider the outcomes of our study for enhancing the efficacy of training programs in the domains of football, taekwondo, and athletics.
The aim of this study was to examine the effects of high-intensity plyometric training (HIPT) on some parameters in elite soccer players in the U17. Volunteer soccer players were randomly divided into two groups according to their positions: the regular training (RT) group (age: 16.71 ± 0.47 years; stature: 163.46 ± 3.31 cm; body weight: 61.04 ± 1.59 kg) and the HIPT group (age: 16.64 ± 0.50 years; stature: 165.60 ± 3.03 cm; body weight: 59.76 ± 1.92 kg), and each group included five defenders, five midfielders, and four attackers. While the RT group did only routine soccer training, the HIPT group performed high-intensity plyometric training three days a week in addition to routine soccer training. In the study, body weight, stature, sprint (10 m, 30 m, and 40 m), jump (standing long jump, right and left-limb triple hop) and 5-0-5 change of direction speed test measurements of the soccer players were taken. Skewness and Kurtosis values obtained from the pre-test and post-test measurements were calculated to test whether the normality assumption of the study was met. A mixed measure two-way ANOVA test was used to determine the difference between the pre-test and post-test. The significance was set as p < 0.05. The results indicated that 8-week high- intensity plyometric training provided more improvement in measured performance parameters than routine soccer training. As a result, when the data obtained is examined, it can be said that HIPT had better values in sprint, jump, and change of direction parameters, so plyometric training was more beneficial for anaerobic parameters than routine soccer training in children. It is recommended that the trainers make their plans considering these results.
Athletic Performance , Plyometric Exercise , Running , Soccer , Child , Humans , Adolescent , Plyometric Exercise/methods , Pilot Projects , Exercise Test , Anaerobiosis , Body Weight
SUMMARY: The purpose of this study was to reveal the differences between ACTN3 genotype (RR, RX, XX) and aerobic performance [Yo-Yo IRT1 (m), VO2 max (ml/kg/min)] in professional and regional amateur league soccer players and to reveal which of these parameters was a distinctive factor in these athletes.71 professional soccer players (age: 23.66 ± 4.11 years; body height: 1.79 ± 6.99 m; body weight: 76.02 ± 6.76 kg; body fat: 11.59±3.11 %) and 62 regional amateur soccer players (age: 23.63 ±3.77 years; body height: 1.81 ± 5.77 m; body weight: 76.36 ± 7.53 kg; body fat: 15.60±4.65 %) volunteered for the study. After DNA extraction from buccal epithelial cells via a commercial kit was performed for the genetic background of the athletes, Real-Time PCR was carried out for genotyping. Furthermore, Yo-Yo IRT1 test was performed to determine the aerobic performance of the soccer players. SPSS 23 (SPSS Inc., Chicago, IL, USA) package program was used for the statistical analysis of the data obtained in the tests. Shapiro-Wilk test for normality and Levene's test for homogeneity of variance were performed. Chi-Square, Independent Sample T Test and One Way ANOVA test were used in the analysis of the parameters. Statistical significance was set as p0.05); however, there was a statistical significance in favor of professional soccer players in terms of aerobic parameters (p<0.05). Consequently, it can be said that aerobic performance is the distinguishing factor, not the ACTN3 gene, in soccer players.
El objetivo de este estudio fue revelar las diferencias entre el genotipo ACTN3 (RR, RX, XX) y el rendimiento aeróbico [Yo-Yo IRT1 (m), VO2 max (ml/kg/min)] en jugadores de fútbol de ligas profesionales y amateurs regionales y determinar cuál de estos parámetros es un factor distintivo en estos deportistas. 71 futbolistas profesionales (edad: 23,66 ±4,11 años; altura corporal: 1,79 ± 6,99 m; peso corporal: 76,02 ± 6,76 kg; grasa corporal: 11,59±3,11 %) y 62 jugadores de fútbol amateur regionales (edad: 23,63 ± 3,77 años; altura corporal: 1,81 ± 5,77 m; peso corporal: 76,36 ± 7,53 kg; grasa corporal: 15,60 ± 4,65 %) se ofrecieron como voluntarios para el estudio. Después de realizar la extracción de ADN de las células epiteliales orales mediante un kit comercial para obtener los antecedentes genéticos de los atletas, se llevó a cabo una PCR en tiempo real para el genotipado. Además, se realizó la prueba Yo-Yo IRT1 para determinar el rendimiento aeróbico de los futbolistas. Para el análisis estadístico de los datos obtenidos en las pruebas se utilizó el programa SPSS 23 (SPSS Inc., Chicago, IL, EE. UU.). Se realizó la prueba de normalidad de Shapiro- Wilk y la prueba de homogeneidad de la varianza de Levene. En el análisis de los parámetros se utilizaron Chi-cuadrado, prueba T para muestra independiente y prueba ANOVA unidireccional. La significancia estadística se estableció en p0,05); sin embargo, hubo significación estadística a favor de los futbolistas profesionales en cuanto a los parámetros aeróbicos (p<0,05). En consecuencia, se puede decir que el rendimiento aeróbico es el factor distintivo, no el gen ACTN3, en los jugadores de fútbol.
Humans , Male , Adult , Young Adult , Physical Endurance/genetics , Polymorphism, Genetic , Soccer , Actinin/genetics , Oxygen Consumption
The purpose of this study is investigate the impact of reactive agility, reaction-based planned change of direction training on the practice of self defence methods among students enrolled in the Private Security and Protection program of Vocational Schools. Twenty male volunteer students, 21.20±1.28 years, height 177.37±6.18 cm, weight 75.56±5.50 kg, voluntarily participated in the study. While the volunteer research group received reactive agility, response speed training for 2 hours 4 days a week for 8 weeks, the control group continued to receive self defence skills instruction as usual. Measurements of body composition Body analyzer Inbody 270 (Japan), reactive test Fitspeed (Turkey) gadget for measuring agility performance, as well as other agility planned change of direction tests Fusion Smart (Australia) with an integrated system of photocell doors, T Test digital integrated system stopwatch (Belgium), Reaction time Speed test was measured using a Performanz Spark test equipment (Turkey). The SPSS 22 software was utilized to analyze the data. First, the data distribution was evaluated using the Shapiro-Wilk test, it was discovered that it did not have a normal distribution. Mann Whitney U Tests were used in this manner to find the difference between the pre-test and post-test results of the nonparametric Wilcoxon Signed Rank Test across groups in order to determine the difference between the pre-post-test data within the group. The level of significance in the study was determined at p>0.05. According to the statistical analysis, the 8-week planned change of direction, reactive agility training improved the response speed, agility performance of the work group students (p>0.05). (AU)
El propósito de este estudio es investigar el impacto de la agilidad reactiva, el entrenamiento de cambio de dirección planificado basado en la reacción en la práctica de métodos de defensa personal entre los estudiantes matriculados en el programa de Protección y Seguridad Privada de las Escuelas Vocacionales. Veinte estudiantes voluntarios varones, 21,20 ± 1,28 años, altura 177,37 ± 6,18 cm, peso 75,56 ± 5,50 kg, participaron voluntariamente en el estudio. Mientras que el grupo de investigación voluntario recibió entrenamiento de agilidad reactiva y velocidad de respuesta durante 2 horas, 4 días a la semana durante 8 semanas, el grupo de control continuó recibiendo instrucción en habilidades de defensa personal como de costumbre. Mediciones de composición corporal Analizador corporal Inbody 270 (Japón), test reactivo Fitspeed (Turquía) Gadget para medir el rendimiento de agilidad, así como otras pruebas de cambio de dirección planificado de agilidad Fusion Smart (Australia) con un sistema integrado de puertas de fotocélula, T Test digital cronómetro de sistema integrado (Bélgica), tiempo de reacción La prueba de velocidad se midió utilizando un equipo de prueba Performanz Spark (Turquía). Se utilizó el software SPSS 22 para analizar los datos. Primero se evaluó la distribución de datos mediante la prueba de Shapiro-Wilk, se descubrió que no tenía una distribución normal. Las pruebas U de Mann Whitney se utilizaron de esta manera para encontrar la diferencia entre los resultados previos y posteriores a la prueba de la prueba no paramétrica de rangos con signos de Wilcoxon entre los grupos para determinar la diferencia entre los datos previos y posteriores a la prueba dentro del grupo.
Humans , Male , Young Adult , Surge Capacity , Students , Personal Protection/analysis , Personal Protection/methods , 28573 , 28599 , Turkey
A new surgical technique was demonstrated for fixating the capsular bag to the sclera using a capsular tension segment (CTS) and a flanged iris hook. In a patient with a 180-degree zonular dialysis, a capsular tension ring was implanted into the capsular bag, and a CTS was placed into the zonular dialysis area after cataract removal. Then, an iris hook was directed to the anterior chamber through a side port opposite the zonular dialysis area. After the hook tip was placed into the eyelet of the CTS, a 30-gauge injector was used to guide the hook tip out. Tension was adjusted to ensure the capsular centralization, and a flange was created using cautery. Finally, the procedure was completed by embedding the flange into the sclera. This method is simple, minimally invasive, and time-saving by eliminating the scleral suturing, scleral flaps, or large conjunctival dissections.
Lens Capsule, Crystalline , Anterior Chamber , Humans , Iris , Prostheses and Implants , Sclera
PURPOSE: To describe a novel surgical technique for iridodialysis repair using an iris retractor segment and report its clinical results. METHODS: Fifty-three eyes of 53 patients who underwent iridodialysis repair using an iris retractor segment were enrolled in this retrospective study. Data recorded from patient files consisted of age, sex, degree of iridodialysis, surgical techniques, number of segments used, preoperative and postoperative corrected distance visual acuity (CDVA), intraocular pressure (IOP), complications, and follow-up time. RESULTS: Mean follow-up time was 34.4 months. The subjects included 29 men (54.7%) and 26 women (45.3%), and the mean age was 56.6 ± 14.0 years. According to the degree of iridodialysis, the patients were divided into Group 1 (60°-89°, n = 19) and Group 2 (90°-270°, n = 34). During the iridodialysis repair for Group 1, a single segment was sufficient; however, in Group 2, one segment was used in 18 eyes (52.9%), two segments in 15 eyes (44.1%), and three segments in one eye (2.9%). The pre- and postoperative last control CDVA value in Group 2 was significantly lower than in Group 1. The pre- and postoperative IOPs for Group 2 were significantly higher than Group 1. CONCLUSION: Iridodialysis repair using an iris retractor segment is a minimally invasive technique and found to be safe and effective. It will be a good option for patients with large iridodialysis, as it avoids excessive surgical manipulations and prolonged surgical time.
Iris Diseases , Suture Techniques , Adult , Aged , Female , Humans , Iris/surgery , Iris Diseases/surgery , Male , Middle Aged , Retrospective Studies , Visual Acuity
The purpose of this study was to determine whether single-piece hydrophilic acrylic intraocular lens can be safely implanted without the use of ophthalmic viscosurgical devices. This retrospective study comprised 100 eyes having phacoemulsification and intraocular lens implantation without the use of ophthalmic viscosurgical device. 80 eyes with the use of a viscosurgical device are used as control group. In this intraocular lens implantation technique, the anterior chamber was maintained with an irrigation cannula and intraocular lens was implanted with a lens injector. Visual acuity, corneal clarity and edema, intraocular pressure, and corneal endothelial cell count were evaluated preoperatively and postoperatively at days 1, 7, and 30. Corneal endothelial cell count was repeated 2 weeks after surgery. Complications of this technique were also evaluated. No significant complications of this intraocular lens implantation technique, such as posterior capsule rupture, intraocular lens buttonholing, zonular dialysis, Descemet's tear/detachment, occurred. On the seventh postoperative day, 90 % of eyes achieved 20/20 or better vision. There was no difference in corneal endothelial cell loss between viscoelastic device-used and not-used cases (p = 0.356). When implanting intraocular lens without the use of ophthalmic viscosurgical device, significant intraoperative complications did not occur. The possible advantages are shortened surgery time, avoidance of postoperative IOP spike from ocular viscosurgical device (OVD) remnant, and reduced cost.
Corneal Diseases/surgery , Lens Implantation, Intraocular/methods , Lenses, Intraocular , Phacoemulsification , Aged , Catheterization/methods , Corneal Diseases/pathology , Corneal Diseases/physiopathology , Corneal Endothelial Cell Loss/pathology , Female , Humans , Intraocular Pressure/physiology , Intraoperative Complications , Lens Implantation, Intraocular/instrumentation , Male , Middle Aged , Ophthalmic Solutions/administration & dosage , Phacoemulsification/methods , Retrospective Studies , Visual Acuity/physiology
