Sodium L-Aspartate Supplementation Improves Repeated-Sprint Performance
Aspartate supplementation has been reported to improve endurance performance by facilitating the tricarboxylic acid cycle flux. The present study was performed to investigate the effects of aspartate supplementation on repeated-sprint performance and blood pH. Following an overnight fast, fourteen h...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Nutrients |
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| Online Access: | https://www.mdpi.com/2072-6643/15/24/5117 |
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| author | Keiichi Yamaguchi Nanako Hayashi Daichi Sumi Miho Ono Tomonori Koizumi Wataru Sato Fumika Takeuchi Yusuke Adachi Kazushige Goto |
| author_facet | Keiichi Yamaguchi Nanako Hayashi Daichi Sumi Miho Ono Tomonori Koizumi Wataru Sato Fumika Takeuchi Yusuke Adachi Kazushige Goto |
| author_sort | Keiichi Yamaguchi |
| collection | DOAJ |
| description | Aspartate supplementation has been reported to improve endurance performance by facilitating the tricarboxylic acid cycle flux. The present study was performed to investigate the effects of aspartate supplementation on repeated-sprint performance and blood pH. Following an overnight fast, fourteen healthy males completed three sets of 10 × 6 s maximal sprints after consuming sodium L-aspartate (ASP) or placebo (PLA), in a double-blind manner. Both supplements were taken twice on each test day (2 × 4.5 g). Exercise performance (e.g., cadence and power output) and blood variables (e.g., pH and plasma amino acid levels) were measured. The ASP trial evidenced significantly higher plasma aspartate concentration during the first (ASP, 45.3 ± 9.2 μM; PLA, 6.1 ± 0.8 μM) and the second exercise sets (ASP, 24.2 ± 4.5 μM; PLA, 6.6 ± 0.9 μM) and peak cadence during the second set (ASP, 153 ± 3 rpm; PLA, 152 ± 3 rpm) compared with the PLA trial (all <i>p</i> < 0.05). The peak power output during the second exercise set (ASP, 743 ± 32 W; PLA, 734 ± 31 W; <i>p</i> = 0.060) and the blood pH immediately before (ASP, 7.280 ± 0.020; PLA, 7.248 ± 0.016; <i>p</i> = 0.087) and after the third exercise set (ASP, 7.274 ± 0.019; PLA, 7.242 ± 0.018; <i>p</i> = 0.093) tended to be higher in the ASP than in the PLA trial. In conclusion, ASP supplementation partially improved repeated-sprint performance (peak cadence during the second exercise set). However, it did not affect the mean power output. |
| first_indexed | 2024-03-08T20:28:06Z |
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| institution | Directory Open Access Journal |
| issn | 2072-6643 |
| language | English |
| last_indexed | 2024-03-08T20:28:06Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nutrients |
| spelling | doaj.art-8248fb8b8436443581f1d899027fff1c2023-12-22T14:30:15ZengMDPI AGNutrients2072-66432023-12-011524511710.3390/nu15245117Sodium L-Aspartate Supplementation Improves Repeated-Sprint PerformanceKeiichi Yamaguchi0Nanako Hayashi1Daichi Sumi2Miho Ono3Tomonori Koizumi4Wataru Sato5Fumika Takeuchi6Yusuke Adachi7Kazushige Goto8Graduate School of Sport and Health Science, Ritsumeikan University, Kusatsu 525-8577, JapanGraduate School of Sport and Health Science, Ritsumeikan University, Kusatsu 525-8577, JapanJapan Society for Promotion of Science, Tokyo 102-0083, JapanAjinomoto Co., Inc., Kawasaki 210-8681, JapanAjinomoto Co., Inc., Kawasaki 210-8681, JapanAjinomoto Co., Inc., Kawasaki 210-8681, JapanAjinomoto Co., Inc., Kawasaki 210-8681, JapanAjinomoto Co., Inc., Kawasaki 210-8681, JapanGraduate School of Sport and Health Science, Ritsumeikan University, Kusatsu 525-8577, JapanAspartate supplementation has been reported to improve endurance performance by facilitating the tricarboxylic acid cycle flux. The present study was performed to investigate the effects of aspartate supplementation on repeated-sprint performance and blood pH. Following an overnight fast, fourteen healthy males completed three sets of 10 × 6 s maximal sprints after consuming sodium L-aspartate (ASP) or placebo (PLA), in a double-blind manner. Both supplements were taken twice on each test day (2 × 4.5 g). Exercise performance (e.g., cadence and power output) and blood variables (e.g., pH and plasma amino acid levels) were measured. The ASP trial evidenced significantly higher plasma aspartate concentration during the first (ASP, 45.3 ± 9.2 μM; PLA, 6.1 ± 0.8 μM) and the second exercise sets (ASP, 24.2 ± 4.5 μM; PLA, 6.6 ± 0.9 μM) and peak cadence during the second set (ASP, 153 ± 3 rpm; PLA, 152 ± 3 rpm) compared with the PLA trial (all <i>p</i> < 0.05). The peak power output during the second exercise set (ASP, 743 ± 32 W; PLA, 734 ± 31 W; <i>p</i> = 0.060) and the blood pH immediately before (ASP, 7.280 ± 0.020; PLA, 7.248 ± 0.016; <i>p</i> = 0.087) and after the third exercise set (ASP, 7.274 ± 0.019; PLA, 7.242 ± 0.018; <i>p</i> = 0.093) tended to be higher in the ASP than in the PLA trial. In conclusion, ASP supplementation partially improved repeated-sprint performance (peak cadence during the second exercise set). However, it did not affect the mean power output.https://www.mdpi.com/2072-6643/15/24/5117aspartateamino acidsprint performanceacid-base balance |
| spellingShingle | Keiichi Yamaguchi Nanako Hayashi Daichi Sumi Miho Ono Tomonori Koizumi Wataru Sato Fumika Takeuchi Yusuke Adachi Kazushige Goto Sodium L-Aspartate Supplementation Improves Repeated-Sprint Performance Nutrients aspartate amino acid sprint performance acid-base balance |
| title | Sodium L-Aspartate Supplementation Improves Repeated-Sprint Performance |
| title_full | Sodium L-Aspartate Supplementation Improves Repeated-Sprint Performance |
| title_fullStr | Sodium L-Aspartate Supplementation Improves Repeated-Sprint Performance |
| title_full_unstemmed | Sodium L-Aspartate Supplementation Improves Repeated-Sprint Performance |
| title_short | Sodium L-Aspartate Supplementation Improves Repeated-Sprint Performance |
| title_sort | sodium l aspartate supplementation improves repeated sprint performance |
| topic | aspartate amino acid sprint performance acid-base balance |
| url | https://www.mdpi.com/2072-6643/15/24/5117 |
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