![]() Although positive adaptations following blood flow restriction (BFR) training were seen for structural (such as muscle mass ) as well as and functional outcomes like muscle strength, rate of torque development and sprint performance, the underlying mechanisms behind these adaptations are not fully understood. rehabilitation after orthopedic injuries).ĭuring the last two decades, research has coherently demonstrated that the induction of local hypoxia augments the adaptive responses of human muscles following low-load (LL) (20–40% one repetition maximum, 1RM) resistance training. These adaptations are similar to dynamic exercise and therefore LL-BFR represents a valuable type of exercise where large joint movements are contraindicated (e.g. The present results demonstrate that isometric LL-BFR causes increased metabolic, neuromuscular as well as perceptual responses compared to LL alone. Additionally, MVC torque significantly decreased immediately post exercise only in LL-BFR (~ − 11%) (p < 0.05) but recovered after 15 min. Lactate levels did not show significant group differences during exercise but revealed higher increases 15 min after completion in the LL-BFR condition (LL-BFR: + 69%, LL: + 22%) ( p < 0.05). 46.3 ± 6.7% of maximal EMG activity), muscle swelling and RPE were significantly higher during LL-BFR compared to LL ( p < 0.05). Resultsĭuring exercise, EMG amplitudes (72.5 ± 12.7% vs. ![]() Additionally, changes in maximal voluntary torque and ratings of perceived exertion (RPE) were monitored. ![]() Lactate levels, muscle activation as well as muscle swelling were recorded during the whole exercise and until 15 min post completion. Methodsįifteen males participated in this cross-over trial and completed the following sessions in a random and counterbalanced order: isometric LL-BFR exercise (20% maximum voluntary contraction, MVC) and load matched LL exercise without BFR. Therefore, the main objective was to investigate the acute physiological adaptations following isometric LL-BFR exercise. However, this evidence is largely based on dynamic exercise conditions. In terms of main underlying mechanisms, metabolic accumulation and increased neuromuscular adaptations seem to play a primary role. Numerous studies have demonstrated that the addition of blood flow restriction (BFR) to low-load (LL) resistance exercise leads to elevated levels of muscle hypertrophy and strength gains.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |