Key result
Increasing sensor contact force significantly increased pulse transit times measured near the foot (p=0.014) and systole phase (p=0.038) until transmural force reached -0.1 N.
Why the study?
Does the applied sensor contact force affect pulse transit time measurements in healthy subjects?
Cross-Sectional (n=30)
Does the applied sensor contact force affect pulse transit time measurements in healthy subjects?
p-value: p=0.014 for PTT1, 0.038 for PTT2
Applied sensor contact force significantly alters pulse transit time measurements, highlighting the need to control contact force during PPG measurements to maintain diagnostic accuracy.
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Requires contact force control in PPG-PTT assessments to preserve accuracy; leaves open optimal standardization for clinical use.
Teng et al. (2006) conducted a cross-sectional in Healthy subjects (n=30). Applied sensor contact force was evaluated on Pulse transit time (PTT1, PTT2, PTT3) (p=0.014 for PTT1, 0.038 for PTT2). Increasing sensor contact force significantly increased pulse transit times measured near the foot (p=0.014) and systole phase (p=0.038) until transmural force reached -0.1 N.
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