Human stance stability improves with the repetition of the task: Effect of foot position and visual condition

Jessica Tarantola, Antonio Nardone, Elena Tacchini, Marco Schieppati

Research output: Contribution to journalArticlepeer-review

Abstract

The effects of repetition of quiet stance trials on body sway, recorded through a stabilometric platform, were studied in 12 normal subjects. With feet together, both with eyes open (EO) and closed (EC), a progressive shift forward of the centre of foot pressure (CFP) occurred with repetition. In addition, with EC, but not with EO, a significant progressive reduction in sway area (SA) and sway path (SP) occurred. With feet 10 cm apart, initial SA and SP values were significantly smaller than with feet together, regardless of the visual condition, but repetition of trials induced no significant effects on either position of CFP or body sway under either visual condition. Results indicate the occurrence of a learning phenomenon in this simple postural task, whereby the body shifts towards a 'safer' position with a minimum energy expenditure due to reduced corrections of sway. Forward leaning and decrease in sway are two independently-occurring processes, each possibly due to a better central integration of proprioceptive input with repetition of trials.

Original languageEnglish
Pages (from-to)75-78
Number of pages4
JournalNeuroscience Letters
Volume228
Issue number2
DOIs
Publication statusPublished - Jun 6 1997

Keywords

  • Balance
  • Human
  • Motor Learning
  • Stabilometry
  • Task repetition

ASJC Scopus subject areas

  • Neuroscience(all)

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