Fig. 1 The Sham (S) and the Press Tack Needle (PTN)



Fig. 2 Stimulus Sites



Fig. 3 Study Flow Chart



Fig. 4 Impressions Immediately Following the Race



Fig. 5 Impressions on the Day Following the Race



Table 1. Background of Subjects



Table 2. Reliability of the Sham for the Press Tack Needle



Table 3. VAS Values before the Race, Immediately after the Race, and the Day following the Race