Introduction: Over the past years, a few review papers about possibilities of using motion analysis systems in sport were published, but there are no articles that discuss this problem in the field of combat sports and martial arts. Aim: This study presents the diversity of contemporary motion analysis systems both, those that are used in scientific research, as well as those that can be applied in daily work of coaches and athletes in combat sports and martial arts. An additional aim is the indication of example applications in scientific research and range of applications in optimizing the training process. It presents a brief description of each type of systems that are currently used in sport, specific examples of systems and the main advantages and disadvantages of using them. The presentation and discussion takes place in the following sections: motion analysis utility for combat sports and martial arts, systems using digital video and systems using markers, sensors or transmitters. Conclusions: Not all types of motion analysis systems used in sport are suitable for combat sports and martial arts. Scientific studies conducted so far showed the usefulness of video-based, optical and electromechanical systems. The use of research results made with complex motion analysis systems, or made with simple systems, local application and immediate visualization is important for the preparation of training and its optimization. It may lead to technical and tactical improvement in athletes as well as the prevention of injuries in combat sports and martial arts. Keywords: Sports training; motion capture; information technology; combat sports; martial arts. Los sistemas de análisis del movimiento como herramientas para optimizar el entrenamiento en deportes de combate y artes marciales ResumenIntroducción: Durante los últimos años se han publicado algunos trabajos de revisión sobre las posibilidades que ofrece la utilización de los sistemas de análisis del movimiento en el deporte. Sin embargo, aún no existen trabajos específicos sobre deportes de combate y artes marciales. Objetivo: Este estudio presenta los diversos sistemas contemporáneos de análisis de movimiento, tanto los utilizados en la investigación científica como aquellos que pueden utilizar cotidianamente los entrenadores y atletas de deportes de combate y artes marciales. Un objetivo adicional es ofrecer ejemplos de aplicaciones en la investigación científica así diversas aplicaciones para la optimización del proceso de entrenamiento. Se presenta una breve descripción de cada tipo de sistema utilizado actualmente en el deporte, ejemplos específicos Sistemas de análise do movimento como instrumentos para otimizar o treino em esportes de combate e artes marciais ResumoIntrodução: Ao longo dos últimos anos alguns trabalhos de revisão sobre as possibilidades de utilização de sistemas de análise do movimento no desporto foram publicados, todavia no âmbito especifico da prática dos desportos de combate e artes marciais artes mas não há trabalhos de revisã...

Flight simulators can cause side effects usually called simulator sickness. Scientific research proves that postural instability can be an indicator of the occurrence of simulator sickness symptoms. This study aims to assess changes of postural control and psychophysical state in novice pilots following 2-h exposure to simulator conditions. The postural sway was quantified based on variables describing the displacement of the Center of Pressure (COP) generated in a quiet stance with eyes open (EO) and closed (EC). The psychophysical state was assessed using the Simulator Sickness Questionnaire (SSQ). The research was carried out in a group of 24 novice pilots who performed procedural and emergency flight exercises in the simulator at Instrument Meteorological Conditions. Each subject was examined twice: immediately before the simulator session (pre-exposure test), and just after the session (post-exposure test). The differences in postural stability between pre- and post-exposure to simulator conditions were assessed based on the normalized Romberg quotients, calculated for individual variables. The lower median values of all Romberg quotients confirmed the decreasing difference between the measures with eyes open and with eyes closed in the post-exposure tests. After the flight simulator session in both measurements (EO and EC) the values of the length of sway path (SP), the mean amplitude (MA), the sway area (SA) have changed. The visual contribution to postural sway control was reduced. The median values for all SSQ scores (total, nausea, oculomotor, and disorientation scales) were significantly higher in post-exposure tests. The largest increase was noted in the oculomotor SSQ scores (from 7.6 ± 7.6 to 37.9 ± 26.5). Over 50% of pilots participating in this study expressed symptoms typical of simulator sickness connected with visual induction: fatigue, eyestrain, difficulty focusing and difficulty concentrating. The severity of oculomotor and disorientation symptoms were rated as moderate (total SSQ score of more than 25 and <60). This study concludes that changes noted in the postural control and psychophysical state of the studied pilots after exposure to the flight simulator confirm the occurrence of the simulator sickness symptoms. Although, we did not find significant correlation of postural stability with SSQ scores.

With the life expectancy increasing, older adult population has gained the attention of many researchers. Aging is known to lead to a general decline in bodily functions, which affect the quality of life. The aim of this study was to analyze how the aging process affects veteran active karate practitioners, in the kinematic and temporal structure of the frontal kick. Nine black belt karate practitioners over 50 years old and 24 black belt karate practitioners, aged between 20 and 30 years old, all male, performed the frontal kick mae-geri. Results showed that knee is the structure that holds most differences between young and veterans, both for linear and for angular variables during the mae-geri performance. Statistical differences were found in linear velocity for the knee; linear acceleration of the knee, hip, and RASIS; maximum angular velocity for knee and hip; maximum angular acceleration for ankle and hip; and in the range of motion of knee. The temporal variables show differences, between groups, in maximum linear velocity, maximum linear acceleration, and maximum angular acceleration. However, no differences were found between groups for the time before contact in the maximum linear and angular acceleration, which allow us to remark both the effects of the aging process and the effect of training. This study corroborates the ability of older people to achieve benefits from sports practice, achieving higher efficiency than the younger adults in task execution, but using different motor control strategies.

Introduction. The aim of this study was to determine the level of overall physical fitness of girls from the Subcarpathian Province Team (SPT) who practise acrobatic and trampoline gymnastics and compare it to that of other members of the SPT. A comparative analysis of the subjects’ physique was also performed. Material and methods. The study was conducted on 175 female subjects who were members of the SPT in the youth and juniors categories. They were divided into three groups: 19 trampoline gymnasts, 35 acrobatic gymnasts, and 121 athletes practising other disciplines (named the SPT group). Overall physical fitness was determined using the International Physical Fitness Test (IPFT). The Body Mass Index, Rohrer’s index, and Ponderal index were calculated on the basis of anthropometric measurements. The obtained data were analysed statistically. In order to determine the statistical significance of differences in the results for each group, ANOVA variation analysis and Tukey’s HSD test were carried out. Results and conclusions. The athletes practising acrobatic and trampoline gymnastics had lower body height, lower body mass, and a slimmer physique than the girls from the SPT who performed other sports. However, it is not possible to clearly determine whether these differences were the result of practising a particular sports discipline. Compared to the SPT athletes practising other sports, the acrobats presented a higher level of overall fitness (apart from grip strength). This was evidenced by the higher scores they achieved for the IPFT (total number of points), trunk flexibility, shoulder muscle strength, and abdominal muscle strength. The fitness level of the trampoline gymnasts was similar to that of the SPT athletes who practised other sports (with better scores for trunk flexibility and lower ones for grip strength). The fitness profiles of the acrobatic and trampoline gymnasts were similar, and the group of acrobats achieved significantly higher scores only in trunk flexibility.

No abstract

No abstract

No abstract

No abstract