Time course of improved flow-mediated dilation after short-term exercise training.
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| Title: | Time course of improved flow-mediated dilation after short-term exercise training. |
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| Authors: | Allen JS (AUTHOR), Geaghan JP (AUTHOR), Greenway F (AUTHOR), Welsch MA (AUTHOR) |
| Source: | Medicine & Science in Sports & Exercise. May2003, Vol. 35 Issue 5, p847-853. 7p. |
| Abstract: | PURPOSE: The purpose was to determine the influence of a unilateral localized short-term handgrip training protocol on brachial artery flow-mediated dilation (BAFMD) and to examine the time course of such changes. METHODS: Fourteen healthy males (age: 26 +/- 5.7 yr) underwent high-resolution ultrasonographic brachial artery assessments before (V1), during (V2-V7), and at the end of 4 wk (V8) of 60% maximal voluntary contraction handgrip training (20 min.d-1, 5 d.wk-1) of the nondominant arm. RESULTS: Before training resting diameters were similar between the trained (nondominant) and untrained (dominant) arms. A 2 (trained and untrained arms) x 2 (V1 and V8) repeated measure ANOVA revealed a significant main (P = 0.02 and P = 0.03) and interaction effect (P = 0.05 and P = 0.01) for the percent and absolute change in BAFMD. BAFMD improved 62% and 70%, respectively from V1 to V8, for the percent and absolute change. Subsequent linear orthogonal polynomial contrasts indicate both the percent and absolute change in BAFMD were statistically different at V2 (end of week 1 and 4 training days) from V1. These unilateral changes were not accompanied by changes in resting artery diameter, hemodynamic measures, hematological markers, and indices of heart rate variability suggesting the change may be locally mediated. CONCLUSIONS: This study shows a localized short-term exercise-training program resulted in significant improvements in BAFMD in the trained arm compared with the untrained arm and suggests this occurred after only 4 d of training. [ABSTRACT FROM AUTHOR] |
| Copyright of Medicine & Science in Sports & Exercise is the property of Lippincott Williams & Wilkins and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Education Research Complete |
| FullText | Text: Availability: 0 |
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| Header | DbId: ehh DbLabel: Education Research Complete An: 106701285 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Time course of improved flow-mediated dilation after short-term exercise training. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Allen+JS%22">Allen JS</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Geaghan+JP%22">Geaghan JP</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Greenway+F%22">Greenway F</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Welsch+MA%22">Welsch MA</searchLink> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Medicine+%26+Science+in+Sports+%26+Exercise%22">Medicine & Science in Sports & Exercise</searchLink>. May2003, Vol. 35 Issue 5, p847-853. 7p. – Name: Abstract Label: Abstract Group: Ab Data: PURPOSE: The purpose was to determine the influence of a unilateral localized short-term handgrip training protocol on brachial artery flow-mediated dilation (BAFMD) and to examine the time course of such changes. METHODS: Fourteen healthy males (age: 26 +/- 5.7 yr) underwent high-resolution ultrasonographic brachial artery assessments before (V1), during (V2-V7), and at the end of 4 wk (V8) of 60% maximal voluntary contraction handgrip training (20 min.d-1, 5 d.wk-1) of the nondominant arm. RESULTS: Before training resting diameters were similar between the trained (nondominant) and untrained (dominant) arms. A 2 (trained and untrained arms) x 2 (V1 and V8) repeated measure ANOVA revealed a significant main (P = 0.02 and P = 0.03) and interaction effect (P = 0.05 and P = 0.01) for the percent and absolute change in BAFMD. BAFMD improved 62% and 70%, respectively from V1 to V8, for the percent and absolute change. Subsequent linear orthogonal polynomial contrasts indicate both the percent and absolute change in BAFMD were statistically different at V2 (end of week 1 and 4 training days) from V1. These unilateral changes were not accompanied by changes in resting artery diameter, hemodynamic measures, hematological markers, and indices of heart rate variability suggesting the change may be locally mediated. CONCLUSIONS: This study shows a localized short-term exercise-training program resulted in significant improvements in BAFMD in the trained arm compared with the untrained arm and suggests this occurred after only 4 d of training. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Medicine & Science in Sports & Exercise is the property of Lippincott Williams & Wilkins and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1249/01.mss.0000064931.62916.8a Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 7 StartPage: 847 Titles: – TitleFull: Time course of improved flow-mediated dilation after short-term exercise training. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Allen JS – PersonEntity: Name: NameFull: Geaghan JP – PersonEntity: Name: NameFull: Greenway F – PersonEntity: Name: NameFull: Welsch MA IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2003 Type: published Y: 2003 Identifiers: – Type: issn-print Value: 01959131 Numbering: – Type: volume Value: 35 – Type: issue Value: 5 Titles: – TitleFull: Medicine & Science in Sports & Exercise Type: main |
| ResultId | 1 |
