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Table 4 Multi-level regression analyses for the change in age across years for the annual ten fastest male and female runners after correction for multiple finishes

From: Will the age of peak ultra-marathon performance increase with increasing race duration?

  ß SE (ß) Stand. ß T p
Annual ten fastest men
6 hrs 0.129 0.076 0.117 1.693 0.092
12 hrs 0.052 0.056 0.056 0.925 0.356
24 hrs 0.023 0.045 0.030 0.518 0.605
48 hrs 0.275 0.043 0.347 6.390 <0.0001 *
72 hrs 0.177 0.277 0.064 0.638 0.525
6 d 0.236 0.062 0.224 3.833 <0.0001 *
10 d 0.435 0.262 0.158 1.658 0.100 *
Annual ten fastest women
6 hrs -0.045 0.114 -0.029 -0.392 0.696
12 hrs 0.138 0.074 0.123 1.865 0.063
24 hrs -0.087 0.052 -0.103 -1.693 0.092
48 hrs 0.269 0.075 0.241 3.576 <0.0001 *
72 hrs -0.200 4.419 -0.011 -0.045 0.964
6 d -0.052 0.114 -0.036 -0.454 0.650
10 d 0.304 0.651 0.056 0.466 0.642
  1. * = significantly different.