Correction factors in skin temperature measurement.

Area of Science:

• Physiology
• Biomedical Engineering

Background:

• Accurate skin temperature measurement is crucial for physiological assessments.
• Existing methods may be influenced by measurement technique variables.

Purpose of the Study:

• To investigate the impact of thermistor probe design and applied pressure on skin temperature readings.
• To establish optimal measurement point strategies for different application contexts.
• To compare thermistor-based measurements with thermography for validation.

Main Methods:

• Skin temperature measured using thermistor thermometers in 14 individuals.
• Influence of probe shape and pressure on readings analyzed.
• Relationship between temperature difference (deltaT) and pressure (P) determined in 10 men.
• Regression equations and correlation coefficients calculated for pressure correction.
• Thermography used to obtain reference skin temperature values.
• 24 formulas (3-16 points) evaluated for mean skin temperature calculation.
• Statistical analysis (t-test, percentage agreement) used to assess method differences.

Main Results:

• Probe shape and applied pressure significantly affect skin temperature measurements.
• Regression equations derived to correct for pressure-induced variations.
• Optimal number of measurement points identified: 10 for laboratory, 6 for field, and 4 for orientational measurements (Ramanathan method).
• High agreement observed between methods within specified temperature criteria.

Conclusions:

• Standardized probe and pressure application are essential for reliable skin temperature measurements.
• The number of measurement points should be adapted to the required precision and context.
• Recommended measurement point strategies provide accurate and efficient skin temperature assessment.