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Effects of alternating blood flow restricted training and heavy-load resistance training on myofiber morphology and mechanical muscle function

2020; American Physiological Society; Volume: 128; Issue: 6 Linguagem: Inglês

10.1152/japplphysiol.00015.2020

8750-7587

S Hansen, J. Ratzer, Jakob Lindberg Nielsen, Charlotte Suetta, Anders Karlsen, Thue Kvorning, Ulrik Frandsen, Per Aagaard,

Cardiovascular Effects of Exercise

The present data demonstrate that periodically substituting heavy-load resistance training (HL-RT) with low-load blood flow restricted resistance training (BFR-RT) leads to similar gains in type II myofiber CSA and muscle strength as achieved by HL-RT alone. Furthermore, we have for the first time evaluated myonuclear content and myonuclear domain size before and after training intervention across separate fiber size clusters and found no within-cluster changes for these parameters with training.