Analysis Method of Heart Rate Variabilities using a Filter to Evaluate Mental and Physiological Workload during High-speed Motorcycle Operation

Abstract

Physiological response during high-speed motorcycle (MC) operation was examined. Electrocardiogram R-R intervals (RRI) of 18 professional riders driving MC at the speed of 150, 200, and 220km/h were measured on a specific oval course. Using digital filters, four bands of RRI time series, 0.06_??_0.5, 0.15_??_0.5, 0.012_??_0.025, 0_??_0.012 Hz, which related to the stationary component of RRI, parasympathetic nervous systems, difficulty in driving, trend of RRI respectively were extracted. Changes in these parameters with driving speed were discussed. The analysis revealed a tendency for changes in the stationary components and high-frequency components to decrease as the driving speed increases. It was also confirmed that trend parameter was significantly different when the driving speed was 150km/h and when it was 200 or 220km/h.