Abstract
We investigated the process of modulating speed by comparing two subject groups who chose different speeds. Sixteen female subjects were asked to perform a continuous forearm rotation movement task at their individually chosen speed, after which they were divided equally into two groups based on their chosen rotation speed (Fast-Preferred Pace group, FPP; Slow-Preferred Pace group, SPP). Eight pairs were then randomly chosen from the groups and matching speed was investigated. We found that the matching speed was faster than the initiated speed in the SPP group and slower than that initiated in the FPP group. During the matching period, rotation speed tended to increase and the coefficients of variations for rotation speed were similar. Thus, we concluded that determination of movement speed and the coefficients of variations for that speed may be a sensitive means to measure synchronization. After the matching period, the rotation speed of the SPP subjects was faster than their original initiated speed. These results suggest that fast movement speed may have a greater influence than slow movement speed.
