FIGURE 6.

Changes in speed at lactate threshold (black circles) and endurance performance determinants: V̇O₂peak (blue diamonds), fractional utilization of V̇O₂peak at lactate threshold (green triangles), and running economy (red triangles); after 90 and 120 min of running in the heavy intensity domain. Open symbols indicate individual responses. Asterisk colors denote the significance of the corresponding variable. Different from 90 min: *p < 0.05, **p < 0.01, ***p < 0.001. Change from unfatigued different than other performance determinants: # p < 0.05, ## p < 0.01. Data are mean ± SD (n = 13).