The LH-TL training has been found not to reduce the energy cost in normoxia (Levine and StrayGundersen, 1997; Telford et al.
2006) energy cost of exercise did not change immediately after LH-TL protocol but 15 days later was reduced in the non-specific activity.
One of the more interesting modifications in the LH-TL protocol was proposed by Chapman et al.
The athletes from the H group beside the LH-TL procedure performed specific aerobic endurance training in hypoxia.
In case of LH-TH and LH-TL training, two factors are considered to be responsible for improvement of hematological variables, e.
These results suggest that, altitude between 2,000 and 2,500 m during the LH-TL protocol allows for an optimal acclimatization response for sea level performance.
Contrary, in several experiments with the LH-TL protocol where the subjects' exposure to hypoxia was extended to 250 hours or longer (300-550 h) haemoglobin mass increased significantly by 8-10% (Brugniaux et al.
Neither maximal capacity of oxidative phosphorylation nor mitochondrial efficiency was modified by time or LH-TL procedure.