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The Effects of Nitrate-Rich Supplementation on Neuromuscular Efficiency during Heavy Resistance Exercise.
Flanagan, Shawn D; Looney, David P; Miller, Mark J S; DuPont, William H; Pryor, Luke; Creighton, Brent C; Sterczala, Adam J; Szivak, Tunde K; Hooper, David R; Maresh, Carl M; Volek, Jeff S; Ellis, Lindsay A; Kraemer, William J.
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  • Flanagan SD; a Department of Human Sciences , The Ohio State University, Columbus, Ohio (S.D.F., W.H.D., B.C.C., A.J.S., T.K.S., D.R.H., C.M.M., J.S.V., W.J.K.); Department of Kinesiology, University of Connecticut, Storrs, Connecticut (D.P.L., L.P., B.C.C., L.A.E.); Healthy Directions , Bethesda , Maryland (M.J
  • Looney DP; a Department of Human Sciences , The Ohio State University, Columbus, Ohio (S.D.F., W.H.D., B.C.C., A.J.S., T.K.S., D.R.H., C.M.M., J.S.V., W.J.K.); Department of Kinesiology, University of Connecticut, Storrs, Connecticut (D.P.L., L.P., B.C.C., L.A.E.); Healthy Directions , Bethesda , Maryland (M.J
  • Miller MJ; a Department of Human Sciences , The Ohio State University, Columbus, Ohio (S.D.F., W.H.D., B.C.C., A.J.S., T.K.S., D.R.H., C.M.M., J.S.V., W.J.K.); Department of Kinesiology, University of Connecticut, Storrs, Connecticut (D.P.L., L.P., B.C.C., L.A.E.); Healthy Directions , Bethesda , Maryland (M.J
  • DuPont WH; a Department of Human Sciences , The Ohio State University, Columbus, Ohio (S.D.F., W.H.D., B.C.C., A.J.S., T.K.S., D.R.H., C.M.M., J.S.V., W.J.K.); Department of Kinesiology, University of Connecticut, Storrs, Connecticut (D.P.L., L.P., B.C.C., L.A.E.); Healthy Directions , Bethesda , Maryland (M.J
  • Pryor L; a Department of Human Sciences , The Ohio State University, Columbus, Ohio (S.D.F., W.H.D., B.C.C., A.J.S., T.K.S., D.R.H., C.M.M., J.S.V., W.J.K.); Department of Kinesiology, University of Connecticut, Storrs, Connecticut (D.P.L., L.P., B.C.C., L.A.E.); Healthy Directions , Bethesda , Maryland (M.J
  • Creighton BC; a Department of Human Sciences , The Ohio State University, Columbus, Ohio (S.D.F., W.H.D., B.C.C., A.J.S., T.K.S., D.R.H., C.M.M., J.S.V., W.J.K.); Department of Kinesiology, University of Connecticut, Storrs, Connecticut (D.P.L., L.P., B.C.C., L.A.E.); Healthy Directions , Bethesda , Maryland (M.J
  • Sterczala AJ; a Department of Human Sciences , The Ohio State University, Columbus, Ohio (S.D.F., W.H.D., B.C.C., A.J.S., T.K.S., D.R.H., C.M.M., J.S.V., W.J.K.); Department of Kinesiology, University of Connecticut, Storrs, Connecticut (D.P.L., L.P., B.C.C., L.A.E.); Healthy Directions , Bethesda , Maryland (M.J
  • Szivak TK; a Department of Human Sciences , The Ohio State University, Columbus, Ohio (S.D.F., W.H.D., B.C.C., A.J.S., T.K.S., D.R.H., C.M.M., J.S.V., W.J.K.); Department of Kinesiology, University of Connecticut, Storrs, Connecticut (D.P.L., L.P., B.C.C., L.A.E.); Healthy Directions , Bethesda , Maryland (M.J
  • Hooper DR; a Department of Human Sciences , The Ohio State University, Columbus, Ohio (S.D.F., W.H.D., B.C.C., A.J.S., T.K.S., D.R.H., C.M.M., J.S.V., W.J.K.); Department of Kinesiology, University of Connecticut, Storrs, Connecticut (D.P.L., L.P., B.C.C., L.A.E.); Healthy Directions , Bethesda , Maryland (M.J
  • Maresh CM; a Department of Human Sciences , The Ohio State University, Columbus, Ohio (S.D.F., W.H.D., B.C.C., A.J.S., T.K.S., D.R.H., C.M.M., J.S.V., W.J.K.); Department of Kinesiology, University of Connecticut, Storrs, Connecticut (D.P.L., L.P., B.C.C., L.A.E.); Healthy Directions , Bethesda , Maryland (M.J
  • Volek JS; a Department of Human Sciences , The Ohio State University, Columbus, Ohio (S.D.F., W.H.D., B.C.C., A.J.S., T.K.S., D.R.H., C.M.M., J.S.V., W.J.K.); Department of Kinesiology, University of Connecticut, Storrs, Connecticut (D.P.L., L.P., B.C.C., L.A.E.); Healthy Directions , Bethesda , Maryland (M.J
  • Ellis LA; a Department of Human Sciences , The Ohio State University, Columbus, Ohio (S.D.F., W.H.D., B.C.C., A.J.S., T.K.S., D.R.H., C.M.M., J.S.V., W.J.K.); Department of Kinesiology, University of Connecticut, Storrs, Connecticut (D.P.L., L.P., B.C.C., L.A.E.); Healthy Directions , Bethesda , Maryland (M.J
  • Kraemer WJ; a Department of Human Sciences , The Ohio State University, Columbus, Ohio (S.D.F., W.H.D., B.C.C., A.J.S., T.K.S., D.R.H., C.M.M., J.S.V., W.J.K.); Department of Kinesiology, University of Connecticut, Storrs, Connecticut (D.P.L., L.P., B.C.C., L.A.E.); Healthy Directions , Bethesda , Maryland (M.J
J Am Coll Nutr ; 35(2): 100-7, 2016.
Article en En | MEDLINE | ID: mdl-26885762
OBJECTIVE: 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. METHODS: 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). RESULTS: 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. CONCLUSION: Supplementation with an NR beetroot extract-based supplement provided neuromuscular advantages during metabolically taxing resistance exercise.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Reclutamiento Neurofisiológico / Ejercicio Físico / Suplementos Dietéticos / Nitratos Tipo de estudio: Clinical_trials Límite: Adult / Humans / Male Idioma: En Revista: J Am Coll Nutr Año: 2016 Tipo del documento: Article
Texto completo
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PubMed Links
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Reclutamiento Neurofisiológico / Ejercicio Físico / Suplementos Dietéticos / Nitratos Tipo de estudio: Clinical_trials Límite: Adult / Humans / Male Idioma: En Revista: J Am Coll Nutr Año: 2016 Tipo del documento: Article