Abstract:
PURPOSE:To examine the effect of acute quercetin (Q) ingestion on neuromuscular function, biomarkers of muscle damage, and rate of perceived exertion (RPE) in response to an acute bout of resistance training. METHODS:10 young men (22.1 ± 1.8 years, 24.1 ± 3.1 BMI) participated in a randomized, double-blind, crossover study. Subjects consumed Q (1 g/day) or placebo (PLA) 3 h prior to a resistance training session which consisted of 3 sets of 8 repetitions at 80% of the one repetition maximum (1RM) completed bilaterally for eight different resistance exercises. Electromyographic (EMG) signals were recorded from the knee extensor muscles during maximal isometric (MVIC) and isokinetic voluntary contractions, and during an isometric fatiguing test. Mechanical and EMG signals, biomarkers of cell damage, and RPE score were measured PRE, immediately POST, and 24 h (blood indices only) following the resistance exercise. RESULTS:After a single dose of Q, the torque-velocity curve of knee extensors was enhanced and after the resistance exercise, subjects showed a lower MVIC reduction (Q: 0.91 ± 6.10%, PLA: 8.66 ± 5.08%) with a greater rate of torque development (+ 10.6%, p < 0.005) and neuromuscular efficiency ratio (+ 28.2%, p < 0.005). Total volume of the resistance exercises was significantly greater in Q (1691.10 ± 376.71 kg rep) compared to PLA (1663.65 ± 378.85 kg rep) (p < 0.05) with a comparable RPE score. No significant differences were found in blood marker between treatments. CONCLUSIONS:The acute ingestion of Q may enhance the neuromuscular performance during and after a resistance training session.
journal_name
Eur J Appl Physioljournal_title
European journal of applied physiologyauthors
Patrizio F,Ditroilo M,Felici F,Duranti G,De Vito G,Sabatini S,Sacchetti M,Bazzucchi Idoi
10.1007/s00421-018-3834-ysubject
Has Abstractpub_date
2018-05-01 00:00:00pages
1021-1031issue
5eissn
1439-6319issn
1439-6327pii
10.1007/s00421-018-3834-yjournal_volume
118pub_type
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