Test-retest reliability of a functional electromechanical dynamometer on swing eccentric hamstring exercise measures in soccer players

Abstract

Background The use of a functional electromechanical dynamometer (FEMD) has been proposed as a valid and effective tool to evaluate specific movement patterns. The aim of this study was to determine the reliability of FEMD on swing eccentric hamstring exercise (SEHE) measures in soccer players. Methods Nineteen federated male soccer players (20.74 ± 4.04 years) performed the SEHE at three different isokinetic velocities (20–40–60 cm/s). These evaluations were conducted in four sessions, two for familiarization and two for registration. The average and maximum load (N) of the three isokinetic velocities was calculated from the values obtained from the FEMD (Dynasystem®, Bangalore). Results The main results of this research showed that the reliability was high for the average load in the condition of 40 cm/s, presenting the highest ICC value (0.94). For maximum load, reliability was high in the condition of 20 cm/s. The manifestation of the most reliable load was the maximum load (ICC = 0.91–0.87). Conclusions FEMD (Dynasystem®, Bangalore) is a reliable device to evaluate the eccentric strength of the hamstring muscles in soccer players.

Test–Retest Reliability of the Functional Electromechanical Dynamometer for Squat Exercise

“…This occurs in all the variables evaluated in the two squat protocols performed in this study, so according to Weir [31], this threshold was met for all our outcome variables. These high-reliability values are due to two main reasons: (1) the high accuracy of the FEMD used, as previously stated [20,23,25,36] and…”

“…Moreover, it has been shown to be a valid and reliable evaluation method [22,23]. This technology has been used to study the strength of different exercises and has obtained high-reliability values [20,[23][24][25][26]. However, the reliability of the squat has not been evaluated with this device.…”

The Role of the Specific Strength Test in Handball Performance: Exploring Differences across Competitive Levels and Age Groups

“…Our research has shown that the use of specific strength assessment tests, the FDST, together with field tests, the SPT, is useful for the trainer or researcher to know the operational status of the athlete at a given time without deviating too much from the specific preparation objective, since these tests are suitable to evaluate and improve performance at the same time. In this research, FDSTs could be applied thanks to the use of the DEMF, a new device that allows evaluating and training strength in natural conditions [34,[47][48][49][50].…”

Relación entre la velocidad de lanzamiento y la fuerza específica evaluada a través de dinamometría electromecánica funcional (DEMF) en jugadores de balonmano

“…El desarrollo de la tecnología ha ofrecido la posibilidad de comenzar a trabajar con dinamómetros electromecánicos funcionales (DEMF), que permiten dar un salto de calidad al trabajo específico de fuerza. Gracias a esto, se solventa el vacío existente entre el control del trabajo de fuerza específico y su aplicación al gesto real del juego, permitiendo una evaluación y entrenamiento en condiciones funcionales (Jerez-Mayorga et al, 2021;Martínez-García et al, 2021;Rodriguez-Perea et al, 2021;Sánchez-Sánchez et al, 2021). El trabajo con DEFM permite controlar las diferentes variables durante los gestos específicos de un deporte concreto, como la carga, el rango la velocidad de movimiento, la magnitud de resistencia, y el tipo de contracción muscular (isométrica, concéntrica y excéntrica).…”