| Title: | The dose–response relationship of quercetin on the motor unit firing patterns and contractile properties of muscle in men and women |
|---|
| Authors: | ID Watanabe, Kohei (Author)
ID Kunugi, Shun (Author)
ID Holobar, Aleš (Author) |
|---|
| Files: |  Watanabe-2023-The_dose-response_relationship_o.pdf (1,14 MB)
MD5: A37DD1E4AA8859EFFD9DD208C3F693F7
 https://www.tandfonline.com/doi/full/10.1080/15502783.2023.2265140
|
|---|
| Language: | English |
|---|
| Work type: | Article |
|---|
| Typology: | 1.01 - Original Scientific Article |
|---|
| Organization: | FERI - Faculty of Electrical Engineering and Computer Science
|
|---|
| Abstract: | 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. |
|---|
| Keywords: | ergogenic aids, nutritional supplementation, multichannel surface electromyography, motor unit identification, quercetin |
|---|
| Publication status: | Published |
|---|
| Publication version: | Version of Record |
|---|
| Submitted for review: | 23.03.2022 |
|---|
| Article acceptance date: | 26.09.2023 |
|---|
| Publication date: | 03.10.2023 |
|---|
| Publisher: | Taylor & Francis, BioMed Central |
|---|
| Year of publishing: | 2023 |
|---|
| Number of pages: | Str. 823-836 |
|---|
| Numbering: | Letn. 20, Št. 1, št. članka 2265140 |
|---|
| PID: | 20.500.12556/DKUM-87027  |
|---|
| UDC: | 613.2:591.131.1 |
|---|
| ISSN on article: | 1550-2783 |
|---|
| COBISS.SI-ID: | 170741763 |
|---|
| DOI: | 10.1080/15502783.2023.2265140 |
|---|
| Copyright: | © 2023 The Author(s) |
|---|
| Publication date in DKUM: | 09.02.2024 |
|---|
| Views: | 410 |
|---|
| Downloads: | 41 |
|---|
| Metadata: |    |
|---|
| Categories: | Misc.
|
|---|
|
:
|
Copy citation |
|---|
| | | | Average score: | (0 votes) |
|---|
| Your score: | Voting is allowed only for logged in users. |
|---|
| Share: |  |
|---|
Hover the mouse pointer over a document title to show the abstract or click
on the title to get all document metadata. |
