Experimental knee-related pain enhances attentional interference on postural control

Autor: Eneida Yuri, Suda, Rogerio Pessoto, Hirata, Thorvaldur, Palsson, Nicolas, Vuillerme, Isabel C N, Sacco, Thomas, Graven-Nielsen
Rok vydání: 2018
Předmět:
Zdroj: European journal of applied physiologyReferences. 119(9)
ISSN: 1439-6327
Popis: To quantify how postural stability is modified during experimental pain while performing different cognitively demanding tasks.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.CoP total area ( - 84.5 ± 145.5 vs. 28.9 ± 78.5 cmPain 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.
Databáze: OpenAIRE