68 Chapter 4 Table 2. Multilevel models predicting relative section time per 50m section, divided by sex and event. 50-m 100-m Estimates SE CI P Estimates SE CI P Male (100m Freestyle) Fixed Effects Intercept 48.90 0.15 48.61 – 49.19 <0.001 51.10 - - - Agea -0.30 0.05 -0.40 – -0.20 <0.001 0.30 - - - Race experiencea 0.02 0.01 0.01 – 0.04 0.006 -0.02 - - - Elite vs Sub-elite 0.05 0.04 -0.02 – 0.12 0.190 -0.05 - - - Elite vs Highcompetitive 0.12 0.03 0.06 – 0.19 <0.001 -0.12 - - - Random Effects σ2 0.22 T00 0.11 ICC 0.33 Marginal R2 / Conditional R2 0.011 / 0.334 50-m 100-m 150-m 200-m Estimates SE CI P Estimates SE CI P Estimates SE CI P Estimates SE CI P Male (200m Freestyle) Fixed Effects Intercept 22.20 0.14 21.94 – 22.47 <0.001 26.14 - - - 27.42 0.10 27.23 – 27.61 <0.001 24.24 0.16 23.92 – 24.55 <0.001 Agea 0.38 0.05 0.28 – 0.47 <0.001 -0.26 - - - -0.55 0.03 -0.62 – -0.48 <0.001 0.43 0.06 0.32 – 0.54 <0.001 Race experiencea 0.05 0.01 0.03 – 0.06 <0.001 -0.01 - - - -0.03 0.01 -0.04 – -0.02 <0.001 -0.01 0.01 -0.03 – 0.01 0.240 Elite vs Sub-elite 0.03 0.03 -0.03 – 0.09 0.412 -0.00 - - - -0.00 0.02 -0.04 – 0.04 0.858 -0.02 0.03 -0.09 – 0.04 0.495 Elite vs Highcompetitive -0.11 0.03 -0.16 – -0.05 <0.001 -0.03 - - - 0.09 0.02 0.06 – 0.13 <0.001 0.04 0.03 -0.02 – 0.10 0.150 Random Effects σ2 0.10 0.06 0.17 T00 0.05 0.02 0.05 ICC 0.34 0.23 0.22 Marginal R2 / Conditional R2 0.086 / 0.395 0.152 / 0.345 0.020 / 0.233
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