Artigo de periodico

Kinematic, kinetic and EMG patterns during downward squatting (2008)

• Authors:
  • Dionisio, Valdeci Carlos - Universidade Estadual de Campinas (UNICAMP)
  • Almeida, Gil Lúcio Almeida - Universidade Estadual de Campinas (UNICAMP)
  • Duarte, Marcos
  • Hirata, Rogério Pessoto Hirata
• Autor USP: DUARTE, MARCOS - EEFE
• Unidade: EEFE
• DOI: 10.1016/j.jelekin.2006.07.010
• Subjects: ELETROMIOGRAFIA; CINEMÁTICA
• Language: Inglês
• Abstract: The aim of this study was to investigate the kinematic, kinetic, and electromyographic pattern before, during and after downward squatting when the trunk movement is restricted in the sagittal plane. Eight healthy subjects performed downward squatting at two different positions, semisquatting (40_ knee flexion) and half squatting (70_ knee flexion). Electromyographic responses of the vastus medialis oblique, vastus medialis longus, rectus femoris, vastus lateralis, biceps femoris, semitendineous, gastrocnemius lateralis, and tibialis anterior were recorded. The kinematics of the major joints were reconstructed using an optoelectronic system. The center of pressure (COP) was obtained using data collected from one force plate, and the ankle and knee joint torques were calculated using inverse dynamics. In the upright position there were small changes in the COP and in the knee and ankle joint torques. The tibialis anterior provoked the disruption of this upright position initiating the squat. During the acceleration phase of the squat the COP moved posteriorly, the knee joint torque remained in flexion and there was no measurable muscle activation. As the body went into the deceleration phase, the knee joint torque increased towards extension with major muscle activities being observed in the four heads of the quadriceps. Understanding these kinematic, kinetic and EMG strategies before, during and after the squat is expected to be beneficial to practitionersfor utilizing squatting as a task for improving motor function
• Imprenta:
  • Publisher place: Nova York
  • Date published: 2008
• Source:
  • Título: Journal of Electromyography and Kinesiology
  • Volume/Número/Paginação/Ano: v. 18, n. 1, p.134-143, fev. 2008

Informações sobre o DOI: 10.1016/j.jelekin.2006.07.010 (Fonte: oaDOI API)
• Este periódico é de assinatura
• Este artigo NÃO é de acesso aberto
  
• Cor do Acesso Aberto: closed

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How to cite

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• ABNT

  DIONISIO, Valdeci Carlos et al. Kinematic, kinetic and EMG patterns during downward squatting. Journal of Electromyography and Kinesiology, v. fe 2008, n. 1, p. 134-143, 2008Tradução . . Disponível em: https://doi.org/10.1016/j.jelekin.2006.07.010. Acesso em: 27 dez. 2025.

• APA

  Dionisio, V. C., Almeida, G. L. A., Duarte, M., & Hirata, R. P. H. (2008). Kinematic, kinetic and EMG patterns during downward squatting. Journal of Electromyography and Kinesiology, fe 2008( 1), 134-143. doi:10.1016/j.jelekin.2006.07.010

• NLM

  Dionisio VC, Almeida GLA, Duarte M, Hirata RPH. Kinematic, kinetic and EMG patterns during downward squatting [Internet]. Journal of Electromyography and Kinesiology. 2008 ; fe 2008( 1): 134-143.[citado 2025 dez. 27 ] Available from: https://doi.org/10.1016/j.jelekin.2006.07.010

• Vancouver

  Dionisio VC, Almeida GLA, Duarte M, Hirata RPH. Kinematic, kinetic and EMG patterns during downward squatting [Internet]. Journal of Electromyography and Kinesiology. 2008 ; fe 2008( 1): 134-143.[citado 2025 dez. 27 ] Available from: https://doi.org/10.1016/j.jelekin.2006.07.010

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