A quantitative characterization of postural sway during human quiet standing using a thin pressure distribution measurement system.
The accuracy of the center of pressure (CoP) measurement during human quiet standing using an ultra-thin film pressure measurement system (Tekscan, I-Scan) was examined. To this end, CoP sway was measured simultaneously by I-Scan and a force platform (FP) to quantify differences in CoP obtained by the two methods. The sway amplitudes of I-Scan were slightly smaller than those of FP. The differences were systematic, allowing us to identify a filter that could bring every CoP trajectory of I-Scan close to that of FP. We concluded that, with the use of the filter, I-Scan could be used for accurate measurement of CoP sway during quiet standing.
Nomura
Kunihiko
K
The Center for Advanced Medical Engineering and Informatics, Osaka University, Japan.
Fukada
Kei
K
Azuma
Teruaki
T
Hamasaki
Toshimitsu
T
Sakoda
Saburo
S
Nomura
Taishin
T
D006801:Humans; D004856:Postural Balance / Q000502:physiology*; D011187:Posture / Q000502:physiology*; D011312:Pressure; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*