From: Validity and reliability of the Swaymeter device for measuring postural sway
 | Young (n = 11) |  | Old (n = 29) | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
 | Floor |  | Foam |  | Floor |  | Foam | ||||
 | Eyes open | Eyes closed |  | Eyes open | Eyes closed |  | Eyes open | Eyes closed |  | Eyes open | Eyes closed |
AP displacement | 15.98 (5.35) | 19.17 (8.71) | Â | 22.86 (10.11) | 33.48 (13.45) | Â | 20.36+ (6.99) | 26.09* (10.79) | Â | 25.90 (7.86) | 46.80* (19.51) |
ML displacement | 12.61 (5.24) | 15.64 (8.54) | Â | 19.83 (6.31) | 29.17 (10.64) | Â | 23.08* (11.50) | 27.07* (15.43) | Â | 32.93* (17.79) | 52.02* (23.42) |
Path length | 59.33 (25.98) | 83.97 (34.08) | Â | 108.27 (46.72) | 195.03 (51.81) | Â | 106.00* (44.96) | 135.08* (62.91) | Â | 186.54* (74.25) | 359.36* (169.72) |