Table 3.

Clustering group results. Darker background color represents higher intensity. The low-intensity group shows no MPE activity in the observed minute, but this is likely a result of very high expenditure in the 5 min period that preceded it. The middle-intensity group exhibits higher expenditure according to MPE features but shows lower values of GM-5MIN in 5 min prior. The high-intensity group produces the highest expenditure in all types of features.

Parameter Name	Low Group	Middle Group	High Group
MPE features (1 min)
	$\mu$     $\sigma$	$\mu$     $\sigma$	$\mu$     $\sigma$
Energy (J)	0    0	180    150	230    280
Event count	0    0	1.8    0.9	2     1
Average recovery time (s)	60    0	20    7	18    8
MPE features (3 min before)
	$\mu$     $\sigma$	$\mu$     $\sigma$	$\mu$     $\sigma$
Energy (J/kg) 3 min	400    350	400    330	700    350
MPE count (3 min)	3.8    2.2	4.0    2.2	6    2
Recovery time (s) (3 min)	155    16	154    15	140    16
GM-5MIN features (5 min before)
	$\mu$     $\sigma$	$\mu$     $\sigma$	$\mu$     $\sigma$
Energy (J/kg)	2900    1000	1300    1000	2800    500
MPE count	6    3.5	4    3.5	9    2.5
Anaerobic energy (J/kg)	750    400	500    400	1000    150
Avg. MPE recovery time (s)	60    80	50    60	23    8
Running energy (J/kg)	1400    800	1000    800	2250    450