Figure 3. Cluster plot with a two-dimensional representation of the five physiological clusters. Clusters are displayed in the two most important dimensions (explaining 88.47% of point variability), which represent a combination of four different speed categories: LIR (<14 km/h), MIR (≥14 and <19 km/h), HIR (≥19 and <24 km/h) and Sprint ≥24 km/h). Individual values and spanning ellipses of clusters are presented for LIE (low intensity endurance cluster), HIE (high intensity endurance cluster), SPR (sprint cluster), LOW (low endurance and sprint cluster) and BLC (balanced cluster).