Biomechanical Analysis of Starting Action on an Outstanding Short Track Speed Skating Female Athlete

2013 ◽  
Vol 459 ◽  
pp. 530-534
Author(s):  
Chuan Bo Zhang
Keyword(s):  
Female Athlete ◽  
Female Athletes ◽  
Jilin Province ◽  
Biomechanical Analysis ◽  
Speed Skating ◽  
The World ◽  
Analysis System ◽  
Sports Biomechanics

The first three steps of staring action of a superb female athlete, who is in the Short track speed skating teamin Jilin province, were analyzed by Simi motion-Biomechanical Analysis System. Through an Analysis of Parameter by the Theory of Sports Biomechanics, we know the spending time and length of each step of the first three steps. After we compare our local Short Track Speed Skaters with those who are famous in china and the whole world, in the field of Technical characteristics and technical movements of start action, we find that for our local athletes, their consumed time of the first step among the first three steps is more than that spent by excellent Short Track Speed Skating female athletes in Our country and the world, but as for the length, theirs are shorter.

Speed Skating Technical Training Based on Sports Biomechanics

2021 ◽  
Vol 7 (5) ◽  
pp. 4860-4869
Author(s):  
Zhuo Lu ◽  
Shouwei Zhang ◽  
Xu Yang
Keyword(s):  
High Speed ◽  
Frame Analysis ◽  
Theory And Practice ◽  
Technical Training ◽  
Frame Rate ◽  
Sports Industry ◽  
Speed Skating ◽  
The World ◽  
Rate Adjustment ◽  
Sports Biomechanics

Objectives: With the vigorous development of China’s sports industry, sports industry has displayed its own sports spirit on the world stage, especially in the speed skating sports. Methods: The combination of sports biomechanics and speed skating training not only helps to improve our speed skating level, but also helps to inherit the tradition of combining sports theory and practice in our country. Results: The speed skating technique based on sports biomechanics can use the knowledge of biomechanics to combine speed skating with mechanical system better. Conclusion: The high-speed camera can be used to collect the players’ training, and the frame rate adjustment function of the computer can be used for frame by frame analysis to ensure the posture correctness of the speed skaters.

ANALYSIS OF THE COMPETITIVE ACTIVITIES OF THE WORLD STRONGEST BELT WRESTLERS

2020 ◽  
Vol 8 (1) ◽  
pp. 38-45
Author(s):  
Mariya Sedunova ◽  
Liliya Konovalova
Keyword(s):  
Female Athletes ◽  
Group Differences ◽  
Men And Women ◽  
World Championship ◽  
Left Handed ◽  
Competitive Activity ◽  
The World ◽  
The Right ◽  
Competitive Activities ◽  
Distinguishing Features

International potential and consequent greater competition in belt wrestling increase the significance of assessing quantitative and qualitative indicators of competitive activity of the strongest wrestlers in the world. It is important to identify the sport development trends and to search for effective ways and tools for achievement of the sport excellence. Purpose: to reveal the features of efficient competitive activities of the world leading wrestlers on the basis of analysis of group differences in technical and tactical excellence indicators. Materials and methods of research. We analyzed videos of 285 events with participation of 197 wrestlers competing at the Belt Wrestling World Championship 2019 in Kazan. We registered the following indicators of competitive activity: the total and average number of fighting techniques, including techniques executed to the right and to the left side within 4 minutes of combat; number and types of technical actions of competition winners among men and women. Research results and discussion. The paper focuses on the comparative analysis of technical and tactical skills of men and women, the winners of the Belt Wrestling World Championship. The research revealed distinguishing features of the winner’s technical toolkit including the diversity of technical and tactical actions, a balance in the knowledge of the right and left-handed techniques. At the same time, the analysis of technical and tactical actions in women wrestling shows the backlog of female athletes in these components of technical fitness.

scholarly journals Gender Differences in Kinematic Analysis of the Lower Limbs during the Chasse Step in Table Tennis Athletes

Healthcare ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 703
Author(s):  
Xiaoyi Yang ◽  
Yuqi He ◽  
Shirui Shao ◽  
Julien S. Baker ◽  
Bíró István ◽  
...  
Keyword(s):  
Female Athletes ◽  
External Rotation ◽  
Rotational Velocity ◽  
Knee Extension ◽  
Lower Limbs ◽  
Table Tennis ◽  
Male Athletes ◽  
Analysis System ◽  
Hip Flexion ◽  
Hip Internal Rotation

The chasse step is one of the most important footwork maneuvers used in table tennis. The purpose of this study was to investigate the lower limb kinematic differences of table tennis athletes of different genders when using the chasse step. The 3D VICON motion analysis system was used to capture related kinematics data. The main finding of this study was that the step times for male athletes (MA) were shorter in the backward phase (BP) and significantly longer in the forward phase (FP) than for female athletes (FA) during the chasse step. Compared with FA, knee external rotation for MA was larger during the BP. MA showed a smaller knee flexion range of motion (ROM) in the BP and larger knee extension ROM in the FP. Moreover, hip flexion and adduction for MA were significantly greater than for FA. In the FP, the internal rotational velocity of the hip joint was significantly greater. MA showed larger hip internal rotation ROM in the FP but smaller hip external rotation ROM in the BP. The differences between genders can help coaches personalize their training programs and improve the performance of both male and female table tennis athletes.

Simulation Analysis of Foot Force in Athletes’ Training Process Based on Sports Biomechanics

2021 ◽  
Vol 7 (5) ◽  
pp. 4900-4913
Author(s):  
Li Huang ◽  
Jianqiu Hu
Keyword(s):  
Simulation Analysis ◽  
Rapid Development ◽  
Human Motion ◽  
Lower Limbs ◽  
Lower Extremity Injury ◽  
Foot Pressure ◽  
Modeling And Analysis ◽  
Analysis System ◽  
Foot Joint ◽  
Sports Biomechanics

Objectives: With the rapid development of sports biomechanics, a new frontier discipline, the modeling and Simulation of human motion, as one of the cutting-edge research topics of sports biomechanics, is receiving more and more attention.. Methods: Based on this, this paper provides theoretical support for the analysis and research of foot stress in the process of training and applies it to guiding practice by using the analysis technology based on sports biomechanics and the method of foot pressure and simulation modeling and analysis system. Results: The results of the study showed that the injury of the athletes in the lower limbs accounted for about 46.7%, followed by the injury of the upper limbs and the injury of the trunk. In the lower extremity injury, the most common part of the foot joint is about 28.1%. Conclusion: Studies have shown that the changes in the force of the athlete’s foot after fatigue have not had the good stability before, the duration of each stage of the completion of the movement is changing, and the control of the ankle joint is decreasing, which greatly increases the foot joint. The possibility of injury.

Stress Fractures And The Reproductive System In The Female Athlete

2018 ◽  
Author(s):  
Irfan M Asif ◽  
Kimberly Harmon ◽  
Mallory Shasteen
Keyword(s):  
Femoral Neck ◽  
Disordered Eating ◽  
Reproductive System ◽  
Female Athlete ◽  
Female Athletes ◽  
Stress Fractures ◽  
Female Athlete Triad ◽  
Low Back ◽  
Mineral Density ◽  
Pubic Ramus

Stress fractures are more common in the female athlete. Stress fractures of the pubic ramus and femoral neck are particularly more common in females than in males. Rib stress fractures are an important injury to consider in the female rower, whereas spondylolysis is a common cause of low back pain in female athletes who hyperextend their spines. The higher incidence of stress fractures in females is mainly due to the higher prevalence of disordered eating and subsequent energy imbalance, which leads to detrimental effects on bone. This review discusses stress fractures and unique issues related to exercise and the female reproductive system. This review contains 6 figures, 5 tables and 49 references Key words: amenorrhea, bone mineral density, disordered eating, female athlete triad, femoral neck, pregnancy, pubic ramus, rib, spondylolysis, stress fracture

scholarly journals Sentiment Analysis in Social Media using Machine Learning Techniques

2020 ◽  
pp. 193-201 ◽  
Author(s):  
Hayder A. Alatabi ◽  
Ayad R. Abbas
Keyword(s):  
Machine Learning ◽  
Social Media ◽  
Sentiment Analysis ◽  
Machine Learning Techniques ◽  
Great Success ◽  
Social Media Data ◽  
Learning Techniques ◽  
The World ◽  
Analysis System ◽  
Media Data

Over the last period, social media achieved a widespread use worldwide where the statistics indicate that more than three billion people are on social media, leading to large quantities of data online. To analyze these large quantities of data, a special classification method known as sentiment analysis, is used. This paper presents a new sentiment analysis system based on machine learning techniques, which aims to create a process to extract the polarity from social media texts. By using machine learning techniques, sentiment analysis achieved a great success around the world. This paper investigates this topic and proposes a sentiment analysis system built on Bayesian Rough Decision Tree (BRDT) algorithm. The experimental results show the success of this system where the accuracy of the system is more than 95% on social media data.

scholarly journals Análisis biomecánico de la competición de 3000 m obstáculos (Biomechanical analysis of the 3000 m steeplechase competition)

Retos ◽  
2015 ◽  
pp. 157-162
Author(s):  
Ana Ogueta-Alday ◽  
Fernando Muñoz Molleda ◽  
Juan García-López
Keyword(s):  
Velocity Ratio ◽  
El Paso ◽  
Step Length ◽  
Flight Time ◽  
Biomechanical Analysis ◽  
World Record ◽  
Male And Female ◽  
London 2012 ◽  
The World ◽  
And Gender

El objetivo es analizar el comportamiento de las variables cinemáticas del paso del obstáculo y la ría, su relación con el rendimiento y la influencia del género y la fatiga en la prueba de 3000 m obstáculos. Durante el XVII Mitin Ciudad de Mataró (clasificatorio para los JJOO de Londres-2012) se analizaron dos pruebas donde participaron 35 atletas (19 hombres y 16 mujeres) que fueron divididos en 3 grupos de nivel en función de su rendimiento comparado con el Récord del Mundo. Las grabaciones fueron digitalizadas mediante un análisis cinemático en 2D (Kinescan-IBV). Algunas variables en el paso del obstáculo (velocidad, distancia de batida y porcentaje tiempo de vuelo) y de la ría (velocidad y pérdida de velocidad en las últimas vueltas) fueron sensibles al nivel, y otras al género (obstáculo: velocidad y distancia de batida relativas a la velocidad de la prueba; ría: velocidad relativa a la velocidad de la prueba). Las variables que no fueron sensibles al nivel, género y fatiga permiten establecer valores de referencia para el entrenamiento (ej. distancia de ataque ~53-55% en el obstáculo y ~35-39% en la ría). En conclusión, este es el primer estudio que analiza conjuntamente la biomecánica del paso del obstáculo y la ría en una prueba de 3000 m obstáculos, relacionando variables biomecánicas con el rendimiento y el género. Se observó que existe una falta de amplitud en el paso del obstáculo en mujeres, y que tanto hombres como mujeres deberían mejorar su técnica de paso de la ría.Palabras clave: Biomecánica, carrera, obstáculos, rendimiento.Abstract: The purpose of this study was to analyze the kinematic variables of both steeplechase and steeplechase water jumps, their relationship with performance, and the influence of some factors such as gender and fatigue during a 3000 m steeplechase competition. Two races of the XVII Athletics Meeting Ciudad de Mataró (National Trials for London-2012 Olympic Games) were recorded. Thirty-five athletes were analyzed (19 male and 16 female) and classified into 3 groups according to their competition performance level compared to the World Record. Images were digitalized by a 2D kinematic analysis (Kinescan-IBV). The results showed that some biomechanical variables of the steeplechase jump (steeplechase velocity, step length and percentage of flight time) and steeplechase water jump (steeplechase velocity and its decrease over the laps) were related to performance. Other variables were sensitive to the gender (steeplechase jump: steeplechase/competition velocity ratio and step length/steeplechase velocity ratio; steeplechase water jump: steeplechase/competition velocity ratio). The variables which were not related to performance, gender or fatigue allowed establishing reference values for training (e.g. takeoff distance of ~53-55% in the steeplechase jump and ~35-39% in the steeplechase water jump). In conclusion, this is the first study that simultaneously analyzed the biomechanics of both steeplechase and steeplechase water jumps during a 3000 m steeplechase competition, relating biomechanical variables to performance and gender. The comparisons with respect to previous studies indicated that the females had a short step length in the steeplechase, and that both male and female should improve their steeplechase water jump technique.Keywords: biomechanics, running, steeplechase, performance.

Stress Fractures And The Reproductive System In The Female Athlete

2018 ◽  
Author(s):  
Irfan M Asif ◽  
Kimberly Harmon ◽  
Mallory Shasteen
Keyword(s):  
Femoral Neck ◽  
Disordered Eating ◽  
Reproductive System ◽  
Female Athlete ◽  
Female Athletes ◽  
Stress Fractures ◽  
Female Athlete Triad ◽  
Low Back ◽  
Mineral Density ◽  
Pubic Ramus

Stress fractures are more common in the female athlete. Stress fractures of the pubic ramus and femoral neck are particularly more common in females than in males. Rib stress fractures are an important injury to consider in the female rower, whereas spondylolysis is a common cause of low back pain in female athletes who hyperextend their spines. The higher incidence of stress fractures in females is mainly due to the higher prevalence of disordered eating and subsequent energy imbalance, which leads to detrimental effects on bone. This review discusses stress fractures and unique issues related to exercise and the female reproductive system. This review contains 6 figures, 5 tables and 49 references Key words: amenorrhea, bone mineral density, disordered eating, female athlete triad, femoral neck, pregnancy, pubic ramus, rib, spondylolysis, stress fracture

Musculoskeletal Problems in the Female Athlete

2013 ◽  
Author(s):  
Irfan M Asif ◽  
Emily Edwards ◽  
Kimberly Harmon
Keyword(s):  
Female Athlete ◽  
Female Athletes ◽  
Cruciate Ligament ◽  
Adhesive Capsulitis ◽  
Stress Fractures ◽  
Pubic Ramus ◽  
Male Athletes ◽  
Acl Injuries ◽  
Musculoskeletal Problems ◽  
Anterior Cruciate

Musculoskeletal injuries in the female athlete are, for the most part, similar to those in the male athlete. However, there are differences in the incidence of these injuries and in the sports in which they tend to occur. Stress fractures are more common in the female athlete because of the higher prevalence of disordered eating and subsequent energy imbalance that leads to detrimental effects on bone. In addition, female athletes have a higher rate of noncontact anterior cruciate ligament (ACL) injuries than male athletes. Other musculoskeletal problems are also more common in females, such as multidirectional instability of the shoulder, adhesive capsulitis, and patellofemoral pain. Finally, as a function of greater participation by females in certain sports, such as dance and gymnastics, injuries specific to those sports are more common in females. This chapter addresses injuries that are seen commonly in the female athlete and reviews unique issues related to exercise and the female reproductive system. Figures depict the management of stress fractures, a stress fracture of the inferior pubic ramus, the tension aspect of the femoral neck, stress fractures of the rib, multidirectional shoulder instability, adhesive capsulitis, spondylolysis, proper squat landing technique, and the female athlete triad. A table outlines the recommended intake of both calcium and vitamin D for bone health at various ages.This chapter contains 9 figures, 1 table, 59 references, and 5 Board-styled MCQs.

Musculoskeletal Problems In The Female Athlete

2018 ◽  
Author(s):  
Irfan M Asif ◽  
Kimberly Harmon ◽  
Mallory Shasteen
Keyword(s):  
Female Athlete ◽  
Female Athletes ◽  
Cruciate Ligament ◽  
Adhesive Capsulitis ◽  
Treatment Options ◽  
Patellofemoral Pain ◽  
Male Athletes ◽  
Anterior Cruciate Ligament Injuries ◽  
Musculoskeletal Problems ◽  
Anterior Cruciate

Musculoskeletal injuries in the female athlete are, for the most part, similar to those in the male athlete. However, there are differences in the incidence of these injuries and in the sports in which they tend to occur. Female athletes have a higher rate of noncontact anterior cruciate ligament injuries than male athletes. Other musculoskeletal problems are also more common in females, such as multidirectional instability of the shoulder, adhesive capsulitis, and patellofemoral pain. This review addresses injuries that are seen commonly in female athletes and outlines current diagnosis and treatment options. This review contains 3 figures and 32 references Key words: ACL tear, adhesive capsulitis, atraumatic, female athlete, injection, knee, patellofemoral pain, shoulder

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