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Randomized Controlled Trial

doi: 10.3390/nu9030314.

Affiliations

¹ Department of Human Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, P.O. Box 616, 6200 MD Maastricht, The Netherlands. jean.nyakayiru@maastrichtuniversity.nl.

² Department of Human Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, P.O. Box 616, 6200 MD Maastricht, The Netherlands. kristin.jonvik@maastrichtuniversity.nl.

³ Institute of Sports and Exercise Studies, HAN University of Applied Sciences, P.O. Box 6960, NL 6503 GL Nijmegen, The Netherlands. kristin.jonvik@maastrichtuniversity.nl.

⁴ Department of Human Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, P.O. Box 616, 6200 MD Maastricht, The Netherlands. jorn.trommelen@maastrichtuniversity.nl.

⁵ Department of Human Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, P.O. Box 616, 6200 MD Maastricht, The Netherlands. philippe.pinckaers@maastrichtuniversity.nl.

⁶ Department of Human Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, P.O. Box 616, 6200 MD Maastricht, The Netherlands. joan.senden@maastrichtuniversity.nl.

⁷ Department of Human Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, P.O. Box 616, 6200 MD Maastricht, The Netherlands. l.vanloon@maastrichtuniversity.nl.

⁸ Institute of Sports and Exercise Studies, HAN University of Applied Sciences, P.O. Box 6960, NL 6503 GL Nijmegen, The Netherlands. l.vanloon@maastrichtuniversity.nl.

⁹ Department of Human Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, P.O. Box 616, 6200 MD Maastricht, The Netherlands. lex.verdijk@maastrichtuniversity.nl.

Free PMC article

Randomized Controlled Trial

Free PMC article

Affiliations

¹ Department of Human Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, P.O. Box 616, 6200 MD Maastricht, The Netherlands. jean.nyakayiru@maastrichtuniversity.nl.

² Department of Human Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, P.O. Box 616, 6200 MD Maastricht, The Netherlands. kristin.jonvik@maastrichtuniversity.nl.

³ Institute of Sports and Exercise Studies, HAN University of Applied Sciences, P.O. Box 6960, NL 6503 GL Nijmegen, The Netherlands. kristin.jonvik@maastrichtuniversity.nl.

⁴ Department of Human Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, P.O. Box 616, 6200 MD Maastricht, The Netherlands. jorn.trommelen@maastrichtuniversity.nl.

⁵ Department of Human Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, P.O. Box 616, 6200 MD Maastricht, The Netherlands. philippe.pinckaers@maastrichtuniversity.nl.

⁶ Department of Human Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, P.O. Box 616, 6200 MD Maastricht, The Netherlands. joan.senden@maastrichtuniversity.nl.

⁷ Department of Human Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, P.O. Box 616, 6200 MD Maastricht, The Netherlands. l.vanloon@maastrichtuniversity.nl.

⁸ Institute of Sports and Exercise Studies, HAN University of Applied Sciences, P.O. Box 6960, NL 6503 GL Nijmegen, The Netherlands. l.vanloon@maastrichtuniversity.nl.

⁹ Department of Human Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, P.O. Box 616, 6200 MD Maastricht, The Netherlands. lex.verdijk@maastrichtuniversity.nl.

Abstract

It has been shown that nitrate supplementation can enhance endurance exercise performance. Recent work suggests that nitrate ingestion can also increase intermittent type exercise performance in recreational athletes. We hypothesized that six days of nitrate supplementation can improve high-intensity intermittent type exercise performance in trained soccer players. Thirty-two male soccer players (age: 23 ± 1 years, height: 181 ± 1 m, weight: 77 ± 1 kg, playing experience: 15.2 ± 0.5 years, playing in the first team of a 2nd or 3rd Dutch amateur league club) participated in this randomized, double-blind cross-over study. All subjects participated in two test days in which high-intensity intermittent running performance was assessed using the Yo-Yo IR1 test. Subjects ingested nitrate-rich (140 mL; ~800 mg nitrate/day; BR) or a nitrate-depleted beetroot juice (PLA) for six subsequent days, with at least eight days of wash-out between trials. The distance covered during the Yo-Yo IR1 was the primary outcome measure, while heart rate (HR) was measured continuously throughout the test, and a single blood and saliva sample were collected just prior to the test. Six days of BR ingestion increased plasma and salivary nitrate and nitrite concentrations in comparison to PLA ( p < 0.001), and enhanced Yo-Yo IR1 test performance by 3.4 ± 1.3% (from 1574 ± 47 to 1623 ± 48 m; p = 0.027). Mean HR was lower in the BR (172 ± 2) vs. PLA trial (175 ± 2; p = 0.014). Six days of BR ingestion effectively improves high-intensity intermittent type exercise performance in trained soccer players.

Keywords: ergogenic aid; football; nitrate; nitric oxide; nitrite.

Conflict of interest statement

The authors declare no conflict of interest.

References

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national center for biotechnology information

# data[].attributes.attachment_link.title
Beetroot Juice Supplementation Improves High-Intensity Intermittent Type Exercise Performance in Trained Soccer Players - PubMed

# data[].attributes.attachment_link.description
It has been shown that nitrate supplementation can enhance endurance exercise performance. Recent work suggests that nitrate ingestion can also increase intermittent type exercise performance in recreational athletes. We hypothesized that six days of nitrate supplementation can improve high-intensit ...

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Propuesta de entrenamineto Training Peaks

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Artículo de interés científico Encoder Lineal

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Artículo de interés científico Encoder Lineal

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Artículo de interés científico Plataforma de Salto

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Vertical jump performance is a commonly used test to measure lower-limb muscle power that is carried out with several types of equipment. The aim of this study was to validate an open-source jump mat (Chronojump Boscosystems) against a proprietary jump mat (Globus Ergo Tester). Sixty-three active sportsmen (age 23.3 ± 2.4 years) completed 8 maximal-effort countermovement jumps (CMJ). The heights of the 504 CMJ were measured from the two jump mats simultaneously. Reliability was examined with intra-class correlation coefficients (ICC), paired samples t-tests, coefficient of variation (CV) and Cronbach's α. Bivariate Pearson's correlation coefficient (r) was used to examine validity. Effects were evaluated using non-clinical magnitudebased inference. There was almost perfect agreement between instruments (ICC = 0.999−1.000, most likely positive 100/0/0). Paired t-test showed a mean difference of 0.03 ± 0.21 cm (90% CI -0.04 − -0.01) between

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Reliability and validity of the Chronojump open-source jump mat system

# data[].attributes.attachment_link.description
Vertical jump performance is a commonly used test to measure lower-limb muscle power that is carried out with several types of equipment. The aim of this study was to validate an open-source jump mat (Chronojump Boscosystems) against a proprietary jump mat (Globus Ergo Tester). Sixty-three active...

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Propuesta de proyecto Plataforma de Salto

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Propuesta de proyecto Plataforma de Salto

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Propuesta de Proyecto Plataforma de Salto

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Validity and reliability of the Kinovea program in obtaining angles and distances using coordinates in 4 perspectives

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An objective analysis of the human movement can help both clinical assessment and sports performance. Kinovea is a free 2D motion analysis software that can be used to measure kinematic parameters. This low-cost technology has been used in sports sciences, as well as in the clinical and research fields.