Jarosław Kuprowski | PubMed Health

PubMed2004

[Comparison of vibrotactile thresholds in women obtained with two psychophysical measurement methods].

BACKGROUND: The aim of the study was to determine differences between vibrotactile thresholds values in healthy women obtained with two psychophysical methods: the method drafted in ISO standard ISO 13091-1:2001 and the method hitherto used in Poland. MATERIAL AND METHODS: Twenty two women (mean age, 37.9 +/- 9.7 years) participated in the study. Vibrotactile perception thresholds were measured in three fingers of both hands using the frequencies of: 4; 25; 31.5; 63; 125; 250; 400 and 500 Hz for the ISO method and respectively 63; 125; 250; 400 and 500 Hz for the Polish method. RESULTS: The mean vibrotactile perception threshold values determined with ISO 13091-1 method were significantly higher than those determined with the method used in Poland. CONCLUSIONS: The effect of individual finger skin temperature on vibrotactile perception values was obtained by ISO method.

Adult↗

PubMed2003

Repeatability of vibrotactile perception thresholds obtained with two different measuring systems.

OBJECTIVES: The measurement of vibrotactile perception thresholds (VPTs) on the workers' fingertips is one of the diagnostic methods of the occupational peripheral neuropathies. The aim of the study was to compare the repeatability of VPT measurements in two groups of healthy women with different finger skin temperature, using two different types of measuring systems. MATERIALS AND METHODS: One measuring system employed a pallesthesiometer, and the measurement procedure complied with the new ISO 13091-1 standard; the other used vibrotactile meter according to the Polish procedure. Ten healthy women, mean age, 38.5 years, took part in 10 sessions, twice a day for over a five-day period. VPTs were measured on 3 fingers of both hands at eight discrete frequencies from 4 to 500 Hz with a pallesthesiometer, and adequately at five frequencies from 63 to 500 Hz with a vibrotactile meter. RESULTS: It was observed that the succession of repeated vibration perception measurements, determined according to the ISO method, did not significantly influence the mean values of vibrotactile thresholds in subjects with the finger skin temperature not lower than 29degrees C. The repeatability of vibrotactile threshold measurements was similar in both groups only when the ISO method was used. The mean VPT values, obtained with the ISO 13091-1 method, were significantly higher in healthy subjects with lower finger skin temperature, which did not exceed 28 degrees C. CONCLUSIONS: The results of vibrotactile threshold measurements, obtained according to the ISO 13091-1 method, are repeatable. Repeatability of vibrotactile threshold results obtained with the ISO 13091-1 method, within the range of low frequencies up to 125 Hz does not depend on the finger skin temperature.

Adult↗