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

Table 2 Multi-level regression analyses for the change in age across years for the annual fastest male and female runners with correction for multiple finishes

	ß	SE (ß)	Stand. ß	T	p
Annual fastest men
6 hrs	0.015	0.130	0.023	0.114	0.910
12 hrs	-0.023	0.155	-0.029	-0.151	0.881
24 hrs	0.193	0.118	0.275	1.642	0.110
48 hrs	0.184	0.147	0.229	1.248	0.223
72 hrs	0.084	0.222	0.084	0.377	0.710
6 d	0.039	0.154	0.047	0.252	0.803
10 d	0.296	0.432	0.194	0.686	0.506
Annual fastest women
6 hrs	0.033	0.182	0.041	0.183	0.856
12 hrs	0.330	0.126	0.450	2.617	0.014*
24 hrs	-0.058	0.124	-0.086	-0.465	0.645
48 hrs	0.249	0.140	0.318	1.775	0.087
72 hrs	0.136	0.316	0.107	0.430	0.673
6 d	0.385	0.083	0.666	4.640	<0.0001*
10 d	-0.067	0.401	-0.048	-0.166	0.871

ISSN: 2052-1847