Abstract:Phosphorus magnetic resonance spectroscopy (MRS) was used to examine the effects of 2 weeks of cycling training on bioenergetics of vastus lateralis in vivo. Eight healthy, untrained men (27 ± 4 yr) performed 6 sessions of HIT (4–6 bouts of 30‐s all‐out cycling). At baseline, and after the 1st and the 6th training sessions, rates of ATP synthesis from net PCr breakdown (ATPCK), glycolysis (ATPGLY) and oxidative phosphorylation (ATPOX) were measured during a 24‐s maximal voluntary isometric contraction (MVIC) i… Show more
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