Fluctuations in Human's Walking (IV)

A field experiment of ring‐wandering is executed on a wide playground. Blindfolded and stoppled subjects are observed to do ring‐wandering rather than random‐walking. This experiment simulates the phenomenon of ring‐wandering that climbers encounter in snowy mountains. 15 samples of walking for 13 subjects are reported. Their walking periods are about 40 minutes or 2 hours. The walking data are acquired every second, using a GPS receiver. The discrete velocity v(t) and discrete angular velocity ω(t) of the data are analyzed, using Hurst's R/S analysis and Fourier spectrum analysis. The Hurst exponents of v(t) show long‐range correlations. The Hurst exponents of ω(t) show anti‐correlations in short‐ranges and correlations in long‐ranges. These characteristics of the Hurst exponents in the present data in addition to previous data in this study series describe the ring‐wandering phenomena very well. Significant differences are not seen between 40‐minutes walking and 2‐hours walking.