Balance Performance Is Task Specific in Older Adults

Table 3

Regression of static balance parameters on FR, by gender.

Static balance condition	Women		Men
	total	Variable included	total	Variable included
NO	6.8		37.2
NC	22.0	,	41.7	,
PO	6.9		27.4
PC	24.1	, ,	23.9
HR	13.7		19.3
HL	16.1	,	35.2	,
HB	14.6		35.0
HF	22.8		21.3

; . NO: normal open position: standing straight, with eyes open. NC: normal closed position: standing straight, with eyes closed. PO: pillows open: standing on pillows, with eyes open. PC: pillows closed: standing on pillows, with eyes closed. HR: head right: standing with the head turned right, with eyes closed. HL: head left: standing with the head turned left, with eyes closed. HB: head back: standing with head tilted backward at a 30-degree angle, with eyes closed. HF: head forward: standing with head tilted forward about 30 degrees, with eyes closed. F1–F8 represent the pattern of sway intensities at different frequency ranges, as shown by Fourier spectral analysis of the postural sway waves. F1 = low, F2–F4 = low-medium, F5-F6 = medium-high, and F7-F8 = high frequencies of the Fourier band.