“The Lactate Threshold of Anaerobic Athletes,” authored by Matt Green, Jared Hornsby and co‑authors.
A further 4 weeks intensification ( including two HVLIT), three HIT, and one THR session each week, showed no additional performance benefit, but increased subjective muscle stress, reduced sleep quality, and increased plasma epinephrine, all indicators of impending overtraining. The implementation of four HVLIT, one HIT, and one THR session over 4 weeks resulted in improved running speed at maximal oxygen...