Purpose of the study was to determine starting times (ST's) toward four different directions of five varieties of foot position, and considerations were made with respect to their directional property and speed property. The subjects for this study were four high school athletic club members. Shown in Fig. (I). The times from the presentation of the stimulus lamp to the response of the subjects lift up the starting board and make contact the landing board were measured in milliseconds by an ordinary electric chronometer device. As Table 2 and Fig. 1 shows, the both legs ST's (Foot position I) were the longest of all ST's, (F.P.II) (III) (IV) (V), while the left, right-leg driving step ST's (F.P.II) were relatively short. The both legs jumping ST to the back ward direction were better than those to other directions. While one leg steping ST's to the left ward and the right ward direction were better than those to other directions. Comparing the left-leg with the right-leg drive, one subject showed the letter was shorter than the former, three subjects in the former were shorter.
