PMID: 8956523Jul 1, 1996Paper

Validity of force platform measures for stance stability under varying sensory conditions

Proceedings of the National Science Council, Republic of China. Part B, Life Sciences
M H HuS S Shen

Abstract

Maintaining stance stability under varying sensory environment is an essential function in the elderly and among patients. Testing sensory organization ability of standing balance, the Sensory Organization Test (SOT), has become a standard procedure in many clinical and laboratory settings. The stance stability can be quantified by two forceplate measures in the SOT: the equilibrium score (ES) and the sway area (SA). This study compares the validity of the ES and the SA in detecting gender, trial, and sensory effects on stability in twenty (ten male, ten female) healthy young adults. Subjects were tested under six sensory conditions: eyes open (EO), eyes closed (EC), sway-referenced vision (Vs), sway-referenced support surface (Ss), eyes closed sway-referenced support surface (ECSs), and sway-referenced visual surround and support surface (VsSs). A visual surround and/or the support surface were tilted proportionately to the subject's spontaneous sway in the sway-referenced conditions. Three trials, 20-second for each trial, were repeated for each sensory condition. Above results demonstrated that the Pearson correlation coefficients between the ES and the SA were all highly significant (p < .0001) except for the first trial of...Continue Reading

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