Table 1. Changes (%) in mean performance time between seasons and in the overall time frame analyzed. Data are means (±SD). Between Seasons Overall time frame 03/04 04/05 04/05 05/06 05/0606/07 06/0707/08 03-08 50m .84 (2.08) .68 (1.71) .83 (1.62) 2.13 (1.79) 4.48 (3.78) 100m .60 (1.53) .82 (1.67) .96 (1.29) 1.19 (1.43) 3.58 (3.37) 200m .94 (1.64) .66 (1.56) .46 (1.28) .48 (1.65) 2.54 (3.40) 400m 1.14 (1.78) 1.08 (1.50) .42 (1.64) .68 (1.53) 3.33 (3.73) 1500m .70 (1.44) .79 (1.53) .77 (1.80) .89 (1.39) 3.16 (2.90)