A prototype for dynamic knee extension: construction, force characterization and electromiographic responses

Carlos Augusto Kalva-Filho; Ricardo Augusto  Barbieri; Vitor Luiz  de Andrade; Ronaldo Bucken  Gobbi; Gabriel Luches  Pereira; Fabio Augusto  Barbieri; Marcelo  Papoti

doi:10.20338/bjmb.v14i3.168

A prototype for dynamic knee extension: construction, force characterization and electromiographic responses

Authors

Carlos Augusto Kalva-Filho University of São Paulo (USP), Graduate Program in Rehabilitation and Functional Performance, Ribeirão Preto, São Paulo, Brazil; São Paulo State University (UNESP), Graduate Program in Movement Science, Human Movement Research Laboratory (MOVI-LAB), Bauru, São Paulo, Brazil
Ricardo Augusto Barbieri Estácio University, Ribeirão Preto, São Paulo, Brazil https://orcid.org/0000-0003-3552-7585
Vitor Luiz de Andrade Unifafibe University Center, Bebedouro, São Paulo, Brazil https://orcid.org/0000-0002-8981-3854
Ronaldo Bucken Gobbi Unifafibe University Center, Bebedouro, São Paulo, Brazil
Gabriel Luches Pereira University of São Paulo (USP), Ribeirão Preto, Graduate program in Physical Education and Sport, São Paulo, Brazil https://orcid.org/0000-0002-2884-4219
Fabio Augusto Barbieri São Paulo State University (UNESP), Graduate Program in Movement Science, Human Movement Research Laboratory (MOVI-LAB), Bauru, São Paulo, Brazil https://orcid.org/0000-0002-3678-8456
Marcelo Papoti University of São Paulo (USP), Graduate Program in Rehabilitation and Functional Performance, Ribeirão Preto, São Paulo, Brazil; University of São Paulo (USP), Ribeirão Preto, Graduate program in Physical Education and Sport, São Paulo, Brazil - mpapoti@yahoo.com.br https://orcid.org/0000-0002-3702-7149

DOI:

https://doi.org/10.20338/bjmb.v14i3.168

Abstract

Background: In the dynamic knee extension (DKE), a metal bar is positioned parallel to bicycle frame, replacing the pedal of a cycle ergometer, which allow consecutives extensions instead of pedaling movement. Considering the fixed ratchet of cycle ergometer, the knee joint returns to its initial position passively, isolating the quadriceps group during the exercise. Thus, DKE can be used to investigate the role of the anterior thigh muscles for the locomotion or balance, for example. However, the DKE ergometer is not commercially available. Aim: to describe the construction of a prototype ergometer for DKE and characterize the force signal and electromyography responses. Methods: Six participants underwent a progressive effort to exhaustion. The electromyography signal of Vastus Lateralis and Biceps Femoris were monitored. The last 10 extensions of each stage were used for analyzes. Results: the force signal has three phases: I: knee extension moment; II: crank draws the metal rod back; III: rapid compression of the load cell by the leg. In addition, Vastus Lateralis activation was higher than Biceps Femoris in all stages (p<0.02). Interpretation: These results demonstrated that is possible to construct an ergometer for DKE, which increase the possibilities of research in motor behavior.

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Published

2020-09-01

How to Cite

Kalva-Filho, C. A., Barbieri, R. A. ., de Andrade, V. L. ., Gobbi, R. B. ., Pereira, G. L. ., Barbieri, F. A. ., & Papoti, M. . (2020). A prototype for dynamic knee extension: construction, force characterization and electromiographic responses. Brazilian Journal of Motor Behavior, 14(3), 97–109. https://doi.org/10.20338/bjmb.v14i3.168

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Issue

Vol. 14 No. 3 (2020)

Section

Research Articles

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