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Table 5 Training intensity for elite athletes [73, 148, 149]

From: Sport, doping and male fertility

Intensity % Heart rate (HR) max % maximum oxygen uptake (VO2 max) Ventilatory Threshold (VT) Blood Lactate Levels (mM) Lactate Threshold (LT)
Very low 54–73 50–65 < VT 1 <  1.2 < LT 1
Low 74–83 66–80   1.3–2.0  
Moderate 84–88 81–87 VT 1 – VT 2 2.1–3.6 LT 1 – LT 2
High 89–93 88–93   4.3–5.7  
Very High (Elite training) >  94 94–100 > VT 2 >  5.8 > LT 2