TABLE 2.

Heart rate and running speed of the amateur ultramarathon runners (mean±SD) during sequential sections of the 100-km run.

	I 0-25 km	II 0-25 km	III 51-75 km	IV 76-100 km
V [km·h-1]	10.44 ± 0.72*1-3,4	9.72 ± 0.97*2-4	9.36 ± 1.29	8.64 ± 1.08
HR [bpm]	145 ± 7.5	148 ± 6.55*2-4	143 ± 5.78	137 ± 3.89
% HRmax	78 ± 4.27	80 ± 3.65*2-4	78 ± 2.75	74 ± 2.07

^*Note: significant differences at p≤0.05