Vibration threshold in non-diabetic subjects

Area of Science:

• Neurology
• Biomedical Engineering
• Clinical Diagnostics

Background:

• Vibration perception threshold (VPT) measurement is vital for classifying and quantifying sensory loss.
• The biothesiometer is a preferred tool for VPT due to low variability and minimal sensory adaptation.
• Existing VPT values lack standardization regarding age, height, and measurement sites.

Purpose of the Study:

• To identify determinants of vibration perception in non-diabetic individuals.
• To establish individualized normal VPT values for clinical application.
• To develop age- and height-specific reference ranges for VPT.

Main Methods:

• Vibration perception threshold (VPT) measurements were taken on the big toes, insteps, lateral malleoli, and wrists.
• 205 healthy non-diabetic subjects (52.7% male, age 21-80) participated.
• Stepwise forward linear regression analysis identified determinants of VPT.

Main Results:

• Age and height were significant independent determinants of VPT at the big toe (st. β = 0.51, p < 0.001 and st. β = 0.43, p < 0.001, respectively).
• Regression equations incorporating age and height quantiles were developed.
• The study provides formulas for calculating age- and height-specific normal VPT values.

Conclusions:

• Age and height are crucial, unmodifiable factors influencing vibration perception.
• The derived equations enable personalized normal VPT values for clinical practice.
• This research supports more accurate VPT assessments in diverse populations.