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Experimental knee-related pain enhances attentional interference on postural control.
Suda, Eneida Yuri; Hirata, Rogerio Pessoto; Palsson, Thorvaldur; Vuillerme, Nicolas; Sacco, Isabel C N; Graven-Nielsen, Thomas.
Afiliação
  • Suda EY; Laboratory of Biomechanics of Human Movement, Department Physical Therapy, Speech and Occupational Therapy, School of Medicine, University of Sao Paulo, São Paulo, Brazil.
  • Hirata RP; Department of Health Science and Technology, Faculty of Medicine, Center for Sensory Motor Interaction, SMI, Aalborg University, Fredrik BajersVej, 93, 9220, Ålborg, Denmark. rirata@hst.aau.dk.
  • Palsson T; Department of Health Science and Technology, Faculty of Medicine, Center for Sensory Motor Interaction, SMI, Aalborg University, Fredrik BajersVej, 93, 9220, Ålborg, Denmark.
  • Vuillerme N; University of Grenoble-Alpes, EA AGEIS, Grenoble, France.
  • Sacco ICN; Institut Universitaire de France, Paris, France.
  • Graven-Nielsen T; Laboratory of Biomechanics of Human Movement, Department Physical Therapy, Speech and Occupational Therapy, School of Medicine, University of Sao Paulo, São Paulo, Brazil.
Eur J Appl Physiol ; 119(9): 2053-2064, 2019 Sep.
Article em En | MEDLINE | ID: mdl-31327028
PURPOSE: To quantify how postural stability is modified during experimental pain while performing different cognitively demanding tasks. METHODS: Sixteen healthy young adults participated in the experiment. Pain was induced by intramuscular injection of hypertonic saline solution (1 mL, 6%) in both vastus medialis and vastus lateralis muscles (0.9% isotonic saline was used as control). The participants stood barefoot in tandem position for 1 min on a force plate. Center of pressure (CoP) was recorded before and immediately after injections, while performing two cognitive tasks: (i) counting forwards by adding one; (ii) counting backwards by subtracting three. CoP variables-total area of displacement, velocity in anterior-posterior (AP-velocity) and medial-lateral (ML-velocity) directions, and CoP sample entropy in anterior-posterior and medial-lateral directions were displayed as the difference between the values obtained after and before each injection and compared between tasks and injections. RESULTS: CoP total area ( - 84.5 ± 145.5 vs. 28.9 ± 78.5 cm2) and ML-velocity ( - 1.71 ± 2.61 vs. 0.98 ± 1.93 cm/s) decreased after the painful injection vs. Control injection while counting forward (P < 0.05). CoP total area (12.8 ± 53.9 vs. - 84.5 ± 145.5 cm2), ML-velocity ( - 0.34 ± 1.92 vs. - 1.71 ± 2.61 cm/s) and AP-velocity (1.07 ± 2.35 vs. - 0.39 ± 1.82 cm/s) increased while counting backwards vs. forwards after the painful injection (P < 0.05). CONCLUSION: Pain interfered with postural stability according to the type of cognitive task performed, suggesting that pain may occupy cognitive resources, potentially resulting in poorer balance performance.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Dor / Postura / Atenção / Equilíbrio Postural / Joelho Limite: Adult / Female / Humans / Male Idioma: En Revista: Eur J Appl Physiol Assunto da revista: FISIOLOGIA Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Dor / Postura / Atenção / Equilíbrio Postural / Joelho Limite: Adult / Female / Humans / Male Idioma: En Revista: Eur J Appl Physiol Assunto da revista: FISIOLOGIA Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha