Isokinetic Identification of Knee Joint Torques before and after Anterior Cruciate Ligament Reconstruction

Czaplicki, Adam; Jarocka, Marta; Walawski, Jacek

doi:10.1371/journal.pone.0144283

Cited by 27 publications

(37 citation statements)

References 44 publications

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“…The subjects assumed the position of the body recommended by the manufacturer. Then standard measurement protocols were implemented, which consisted in performing 5 and 10 cycles of extension and flexion of the dominant limb at the angular velocities of 60 deg/s and 180 deg/s [6,27,28,29]. The torque values of the flexors at both angular velocities were corrected for gravitation using an original algorithm developed in MATLAB (MathWorks, Natick, MA).…”

Section: Methodsmentioning

confidence: 99%

Biomechanical Assessment of Strength and Jumping Ability in Male Volleyball Players During the Annual Training Macrocycle

Czaplicki

Śliwa

Szyszka

et al. 2017

Polish Journal of Sport and Tourism

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Introduction. The aim of the study was to determine the changes in the peak torque of the knee extensors and flexors of the dominant lower limb, the shoulder internal and external rotators of the dominant upper limb, and the shoulder extensors and flexors of the dominant upper limb as well as the changes in jump height in volleyball players during the annual training macrocycle. Material and methods. The study involved 13 volleyball players from a Polish second-league team. The measurements were performed five times: before the preparation period (T1), at the beginning of the competitive season (T2), in the middle (T3) and at the end of the first competition period (T4), and after the competitive season (T5). The torque of the knee muscles and shoulder rotators was measured in isokinetic conditions, and the torque of the shoulder extensors and flexors was assessed in isometric conditions. Jumping ability was tested using a piezoelectric platform. Results. We observed statistically significant differences (p < 0.05) in jump height and relative peak torque between the measurements, except for the torque of the shoulder external rotators and flexors. The results of multiple factor analysis based on 5 sets composed of 5 strength variables revealed differences between subjects and measurement sessions. Conclusions. The results obtained indicate that strength and jumping ability should be assessed regularly during the competitive season. The findings of the study suggest that it is necessary to modify the training methods used during the preparation period and individualize the training in the final phase of the competition period.

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Section: Methodsmentioning

confidence: 99%

Biomechanical Assessment of Strength and Jumping Ability in Male Volleyball Players During the Annual Training Macrocycle

Czaplicki

Śliwa

Szyszka

et al. 2017

Polish Journal of Sport and Tourism

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“…Following the coach's suggestion, we measured the net torque of the muscles acting on the knee joint of the lead leg, that is the limb which bears the weight of the body during the throw. A standard measurement procedure was used: the subjects performed 5 repetitions of extension and flexion at an angular velocity of 60°/s [20,21].…”

Section: Methodsmentioning

confidence: 99%

Biomechanical Assessment of Motor Abilities in Male Handball Players During the Annual Training Macrocycle

Sacewicz

Bodasiński

Śliwa

et al. 2016

Polish Journal of Sport and Tourism

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Introduction. The aim of the study was to determine the torque of the knee extensors and flexors of the lead lower limb, the torque of the shoulder extensors and flexors of the dominant upper limb, and the torque generated by the muscles of the kinematic chain going from the trail lower limb to the hand of the dominant limb in male handball players during the annual training macrocycle. Changes in jump height and throwing velocity were also investigated. Material and methods. The study involved 13 handball players from a Polish second-league team. The measurements were performed four times: at the beginning of the preparation period, at the beginning of the season, at the end of the first part of the season, and at the end of the second part of the season. Torque was measured in isokinetic and isometric conditions. Jumping ability was tested using a piezoelectric platform, and throwing velocity was measured with a speed radar gun. Results. The study found statistically significant differences between the relative torque values of the knee extensors (p < 0.002) and flexors (p < 0.003) of the lead leg measured in isokinetic conditions between the first three measurements and the final one. Isokinetic measurement of the torque of the muscles of the kinematic chain going from the trail leg to the hand of the dominant arm decreased in a statistically significant way at the end of the season. As for the results of the measurement of the torque of the shoulder extensors and flexors in static conditions, no statistically significant differences were observed between the four measurements. However, statistically significant differences were noted in jumping ability and throwing velocity in the annual training macrocycle. Conclusions. The results of the study indicate that there is a need to perform regular assessments of players' strength and jumping ability during the competition period. There is a need to modify the training methods used during the preparation period and in the second part of the season as well as to individualise training at the end of the competition period.

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“…De acuerdo con esto, en el mercado existen dispositivos que permiten la medición de variables como la posición angular en diferentes articulaciones del cuerpo, las velocidades angulares, las fuerzas y el par (14)(15)(16)(17).…”

Section: Introductionunclassified

“…Específicamente, la medición del par es una opción que ha sido utilizada por los clínicos para determinar objetivamente el progreso del paciente conforme avanza la rehabilitación (15)(16)(17). Se han reportado estudios donde se ha utilizado esta medida para cuantificar el progreso de la intervención terapéutica en lesiones de ligamento cruzado anterior (11,17), rehabilitación posterior a cirugías de meniscectomía (16), lesiones lumbares (15), entre otras. En el mercado ya se encuentran dispositivos como los sistemas Contrex (51) y Human Norm (52) que registran el torque y permiten visualizar gráficas para evaluar el progreso de dicha variable.…”

Section: Introductionunclassified

Estimación de par basada en electromiografía de superficie: potencial herramienta para la rehabilitación de rodilla

et al. 2020

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Este artículo fue aprobado para publicación en el v68n3 de la Revista de la Facultad de Medicina teniendo en cuenta los conceptos de los pares evaluadores y los cambios realizados por los autores según estos conceptos. Por lo tanto, se publica la versión preliminar del artículo para su consulta y citación provisional, pero debe aclararse que esta puede diferir del documento final, ya que no ha completado las etapas finales del proceso editorial (corrección de estilo, traducción y diagramación) y solo los títulos, datos de autores, palabras clave y resúmenes corresponden a la versión final del artículo.Esta versión puede consultarse, descargarse y citarse según se indique a continuación, pero debe recordarse que el documento final (PDF, HTML y XML) puede ser diferente. Cómo citar:Portela MA, Sánchez-Romero JI, Pérez VZ, Betancur MJ. [Estimación de par basada en electromiografía de superficie: potencial herramienta para la rehabilitación de rodilla]. Rev. Fac. Med. 2020;68(3): In press -2020. English. doi: MJ. Torque estimation based on surface electromyography: potential tool for knee rehabilitation. Rev. Fac. Med. 2020;68(3): In press -2020. English. doi: http://dx.doi.org/10.15446/ revfacmed.v68n3.75214. Revista de la Facultad de MedicinaIn press publication Rev. Fac. Med.

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Isokinetic Identification of Knee Joint Torques before and after Anterior Cruciate Ligament Reconstruction

Cited by 27 publications

References 44 publications

Biomechanical Assessment of Strength and Jumping Ability in Male Volleyball Players During the Annual Training Macrocycle

Biomechanical Assessment of Strength and Jumping Ability in Male Volleyball Players During the Annual Training Macrocycle

Biomechanical Assessment of Motor Abilities in Male Handball Players During the Annual Training Macrocycle

Estimación de par basada en electromiografía de superficie: potencial herramienta para la rehabilitación de rodilla

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