Introduction: In numerous of movement tests and sport relevant exercise tests is necessary to identify the actual state of power and explosive strength abilities for exacting special movement techniques. For detailed movement analysis were used a new miniaturized electronic measurement device, called "Autonomous Sensor System". The developed sensor system can be applied, e.g., to joint cuffs and other parts of the human body without affecting a person`s movement and posture. The measuring sensor system consist of following components: three-axis-inertial sensor and three-axis gyroskop, magnet field sensor, microcontroller board and radio module, automatically registration of signal courses (e.g. curves acceleration, velocity, distance, angle), mathematical processing of the signal courses (e.g. facts of single parameters in three-axis vectors and appropriate parameters of time until the reading of the maximal factors). The signal rate was 100 Hz. Methods: Ten highly skilled athletes (16 till 21 years old) in four different sports and two strength exercises were measured by using sensor system while performing simple exercises. Following events and exercises were choice: Straight punch in Boxing, sensor fixed at arm and punch equipment, up and town phase in bench press, sensor fixed at barbel, up and town phase in bench pull, sensor fixed at barbel, tractive power of the arm in Judo, sensor fixed at tractive arm and pulley machine, shot put, sensor were fixed at throw arm. Three-axis kinematic and dynamic curves were recorded during three exercise repetitions in all sports and tests. The experimental set-up and mathematical processing of the signal courses allowed the recording of three-axis parameters with the special software. Results: Measured signals were typical for tested techniques. Example shot put: In shot put are important parameters start velocity of the shot after relies the hand and shot put angle. Velocities of 7.8, 8.7 and 9.1 m/s, shot put angles of 38.1, 37.8 and 40 degree, fly distance shot of 16.2, 17.3 and 16.8 m. Example boxing: The body mass of athlete, 67 kg, 16 years old. Maximum of velocities, 5.2, 5.7 and 5.9 m/s, maximum of accelerations, 57, 61 and 54 m/s2. Discussion: It were showed the easy and fast use in sport practice. No complicated calibration process necessary. The biofeedback devise allow to inform about important and effective criteria which can intensify the capacity of athletes in different exercises. So it provides the parameter for the best performance of technique. In spite of existing individual technical variants, the special exercises can be considered an essential movement sequence which plays an important part in coaching both young athletes and elite athletes. This measurement sensor system objectifies and controls the generation of initial parameter in the different technique and exercise. This sensor system is small, flexible and not expensive.
© Copyright 2014 19th Annual Congress of the European College of Sport Science (ECSS), Amsterdam, 2. - 5. July 2014. Veröffentlicht von VU University Amsterdam. Alle Rechte vorbehalten. / Übersetzt mit https://www.DeepL.com/Translator