Table 3: The visual gain and the emergency responses in the single stance test (ST). Each variable in the first column is identified by a compound name which includes the eye condition and the name of the basic variable.

VariablesEyesUnitSexMean ± SDP level*
65–74 yrs75–84 yrs

Visual gain (EO-EC)_SI Open closedppWomen34.8 ± 15.723.8 ± 17.6<0.001
Men35.2 ± 16.025.1 ± 17.4<0.001
Women34.8 ± 15.7ns
Men35.2 ± 16.0
Women23.8 ± 17.6ns
Men25.1 ± 17.4

Emergency responses EO_PIxyOpenDegreesWomen2.2 ± 1.72.5 ± 1.2ns
Men2.3 ± 1.62.8 ± 1.6<0.05

Emergency responses EC_PIxyClosedDegreesWomen3.3 ± 1.53.2 ± 1.3ns
Men3.6 ± 1.63.4 ± 1.8ns

EO: Eyes open; EC: Eyes closed; SI: Stability index; PIxy: Postural cone amplitude; pp: Percentage points. The values are calculated considering the worse leg in the EC trials. *significance level according to t-test.