25 Performance development of top-elite swimmers 2 For males, there was a significant effect of best performance group on rSBT from age 12 till 26 (p <0.05). Planned comparisons between the top-elite performance group and other performance groups revealed that from the age of 12, top-elite swimmers performed better than high-competitive swimmers (t(273)=-2.643, p=0.009). From the age of 14, topelite swimmers performed better than sub-elite swimmers (t(6.169)=-3.516, p=0.012). From the age of 18, top-elite swimmers performed better than elite swimmers(t(909)=-2.051, p=0.041). For females, there was a significant effect of best performance group on rSBT from age 12 till 24 (p <0.05). Planned comparisons between the top-elite performance group and other performance groups revealed that from the age of 12, top-elite swimmers performed better high-competitive swimmers (t(430)=-4.034, p <0.001) and sub-elite (t(430)=-2.268, p=0.024). From the age of 14, top-elite swimmers performed better than elite swimmers (t(939)=-3.574, p <0.001). Figure 1. Performance development of male (left) and female (right) swimmers on the 100m freestyle from age 12 to 26 years specified for each of the four best performance groups
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