{"title":"Pivotal Role of Heart for Orthostasis: Left Ventricular Untwisting Mechanics and Physical Fitness.","authors":"Shigeki Shibata, Kazukuni Hirabuki, Noritaka Hata, Rina Suzuki, Tomoya Suda, Takahiro Uechi, Ai Hirasawa","doi":"10.1249/JES.0000000000000247","DOIUrl":null,"url":null,"abstract":"<p><p>Augmentation of left ventricular (LV) untwisting due to central hypovolemia is likely to be a compensatory mechanism for maintaining stroke volume, which is reduced by a decrease in cardiac filling during orthostatic stress. Orthostatic intolerance observed in both high and low fitness levels may be explained by the impaired response of LV untwisting due to central hypovolemia.</p>","PeriodicalId":55157,"journal":{"name":"Exercise and Sport Sciences Reviews","volume":"49 2","pages":"88-98"},"PeriodicalIF":4.9000,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Exercise and Sport Sciences Reviews","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1249/JES.0000000000000247","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PHYSIOLOGY","Score":null,"Total":0}
引用次数: 1
Abstract
Augmentation of left ventricular (LV) untwisting due to central hypovolemia is likely to be a compensatory mechanism for maintaining stroke volume, which is reduced by a decrease in cardiac filling during orthostatic stress. Orthostatic intolerance observed in both high and low fitness levels may be explained by the impaired response of LV untwisting due to central hypovolemia.
期刊介绍：
Exercise and Sport Sciences Reviews made the transition from an annual hardcover series book to a quarterly journal in January 2000. The mission of this American College of Sports Medicine publication is to provide premier quarterly reviews of the most contemporary scientific, medical, and research-based topics emerging in the field of sports medicine and exercise science. The publication strives to provide the most relevant, topical information to students, professors, clinicians, scientists, and professionals for practical and research applications.
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