| Naslov: | The dose–response relationship of quercetin on the motor unit firing patterns and contractile properties of muscle in men and women |
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| Avtorji: | ID Watanabe, Kohei (Avtor)
ID Kunugi, Shun (Avtor)
ID Holobar, Aleš (Avtor) |
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| Datoteke: |  Watanabe-2023-The_dose-response_relationship_o.pdf (1,14 MB)
MD5: A37DD1E4AA8859EFFD9DD208C3F693F7
 https://www.tandfonline.com/doi/full/10.1080/15502783.2023.2265140
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| Jezik: | Angleški jezik |
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| Vrsta gradiva: | Članek v reviji |
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| Tipologija: | 1.01 - Izvirni znanstveni članek |
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| Organizacija: | FERI - Fakulteta za elektrotehniko, računalništvo in informatiko
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| Opis: | Quercetin is one type of ergogenic aid and its effects on the neuromuscular system have recently attracted interest, but its dose-effect is not yet fully understood. The aim of this study was to examine the effect of different doses of quercetin ingestion on motor unit firing patterns and muscle contractile properties in humans. Thirteen young males and females conducted neuromuscular performance tests before (PRE) and 60 min after (POST) ingestions of 500 or 200 mg of quercetin glycosides (Qg500/Qg200, respectively) or placebo (PLA) on three different days. At PRE and POST, motor unit firing rates were calculated from high-density surface electromyography of the vastus lateralis muscle during 120-s isometric contraction of knee extension at 10% of maximal voluntary contraction. Electrically elicited forces in knee extensor muscles were also measured. After 60 s of voluntary contraction, motor unit firing rates, normalized by the exerted muscle force at POST, were significantly lower at POST than PRE with Qg500 and Qg200 (p < 0.05), but not with PLA (p > 0.05). Changes in motor unit firing rates normalized by the exerted force from PRE to POST were significantly greater with Qg500 than Qg200 at the end of contraction (p < 0.05). Under all three conditions, the electrically elicited force did not significantly change from PRE to POST (p > 0.05). These results suggest that both 500 and 200-mg quercetin ingestions alter motor unit firing patterns, and that quercetin’s effect is at least partially dose-dependent. |
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| Ključne besede: | ergogenic aids, nutritional supplementation, multichannel surface electromyography, motor unit identification, quercetin |
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| Status publikacije: | Objavljeno |
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| Verzija publikacije: | Objavljena publikacija |
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| Poslano v recenzijo: | 23.03.2022 |
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| Datum sprejetja članka: | 26.09.2023 |
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| Datum objave: | 03.10.2023 |
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| Založnik: | Taylor & Francis, BioMed Central |
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| Leto izida: | 2023 |
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| Št. strani: | Str. 823-836 |
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| Številčenje: | Letn. 20, Št. 1, št. članka 2265140 |
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| PID: | 20.500.12556/DKUM-87027  |
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| UDK: | 613.2:591.131.1 |
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| COBISS.SI-ID: | 170741763 |
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| DOI: | 10.1080/15502783.2023.2265140 |
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| ISSN pri članku: | 1550-2783 |
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| Avtorske pravice: | © 2023 The Author(s) |
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| Datum objave v DKUM: | 09.02.2024 |
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| Število ogledov: | 273 |
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| Število prenosov: | 23 |
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| Metapodatki: |    |
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| Področja: | Ostalo
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