The Effects of Nitrate-Rich Supplementation on Neuromuscular Efficiency during Heavy Resistance Exercise
| العنوان: | The Effects of Nitrate-Rich Supplementation on Neuromuscular Efficiency during Heavy Resistance Exercise |
|---|---|
| المؤلفون: | William J. Kraemer, Mark J. S. Miller, David P. Looney, Jeff S. Volek, Lindsay A. Ellis, William H. DuPont, Shawn D. Flanagan, Tunde K. Szivak, Carl M. Maresh, Brent C. Creighton, David R. Hooper, Luke Pryor, Adam J. Sterczala |
| المصدر: | Journal of the American College of Nutrition. 35:100-107 |
| بيانات النشر: | Informa UK Limited, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Male, Recruitment, Neurophysiological, medicine.medical_specialty, Gross motor skill, Medicine (miscellaneous), Squat, Isometric exercise, Sports nutrition, Plant Roots, Young Adult, 03 medical and health sciences, chemistry.chemical_compound, 0302 clinical medicine, Animal science, Double-Blind Method, Nitrate, Crossover experiment, Heart rate, medicine, Humans, Exercise, Nitrates, Nutrition and Dietetics, Washout, 030229 sport sciences, chemistry, Dietary Supplements, Physical therapy, Beta vulgaris, 030217 neurology & neurosurgery |
| الوصف: | Nitrate-rich (NR) supplements can enhance exercise performance by improving neuromuscular function and the aerobic cost of exercise. However, little is known about the effects of nitrate on dynamic, multijoint resistance exercise.Fourteen resistance-trained men (age, 21.1 ± 0.9 years; height, 173.2 ± 2.9 cm: body mass, 77.6 ± 4.3 kg; squat one-repetition maximum [1RM], 127.5 ± 18.8 kg) participated in a randomized, double-blind, crossover experiment. Subjects consumed an NR or nitrate-poor (NP) supplement for 3 days, performed a bout of heavy resistance exercise, completed a washout, and then repeated the procedures with the remaining supplement. Before, during, and after exercise, individual and gross motor unit efficiency was assessed during isometric and dynamic muscle contractions. In addition, we compared physical performance, heart rate, lactate, and oxygen consumption (VO2).Nitrate-rich supplementation resulted in lower initial muscle firing rates at rest and lower mean and maximum firing rates over the course of fatiguing exercise. Nitrate-poor supplementation was accompanied by increased mean and maximum firing rates by the end of exercise and lower initial firing rates. In addition, NR supplementation resulted in higher mean peak electromyography (EMG) amplitudes. Heart rate, lactate, and physical performance did not differ by treatment, but oxygen consumption increased more frequently when the NP supplement was consumed.Supplementation with an NR beetroot extract-based supplement provided neuromuscular advantages during metabolically taxing resistance exercise. |
| تدمد: | 1541-1087 0731-5724 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a92870b41cfd2e723dc9ee3028e4d82 https://doi.org/10.1080/07315724.2015.1081572 |
| رقم الأكسشن: | edsair.doi.dedup.....8a92870b41cfd2e723dc9ee3028e4d82 |
| قاعدة البيانات: | OpenAIRE |
PDF full text from Publisher | تدمد: | 15411087 07315724 |
|---|