Table 1.

Exercise intensity domains.

	AT		RC
	Light to	High to	Moderate to	Severe to
	moderate	severe	high	extreme
Borg scale	9–12	13–16	>16	18–20
% VO2peak	45–55	55–80	>80	~100
HR reserve %	HRMAX 60–70	70–90	>90	~100
Blood lactate (mmol/l)	<2.0	2.0–4.0	>4.0
Exercise duration	>30 min	20–30 min	3–20 min	<3 min
Training modality	Continuous	Continuous	Interval	Interval

AT, anaerobic threshold; RC, respiratory compensation point; HR, heart rate.