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A Comparison of the Vascular Respons...

Leach, Olivia Kathryn.

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A Comparison of the Vascular Response to Acute Sauna Heating in Young and Middle-Aged Adults.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	A Comparison of the Vascular Response to Acute Sauna Heating in Young and Middle-Aged Adults./
作者:	Leach, Olivia Kathryn.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2023,
面頁冊數:	32 p.
附註:	Source: Masters Abstracts International, Volume: 85-01.
Contained By:	Masters Abstracts International85-01.
標題:	Exercise. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30511413
ISBN:	9798379868215

A Comparison of the Vascular Response to Acute Sauna Heating in Young and Middle-Aged Adults.
Leach, Olivia Kathryn.

A Comparison of the Vascular Response to Acute Sauna Heating in Young and Middle-Aged Adults. - Ann Arbor : ProQuest Dissertations & Theses, 2023 - 32 p.

Source: Masters Abstracts International, Volume: 85-01.

Thesis (M.Sc.)--Brigham Young University, 2023.

This item must not be sold to any third party vendors.

BACKGROUND: Age-related declines in endothelial function have been well documented with larger declines observed in middle-aged. Passive heat exposure has been shown to be a promising method to improve vascular endothelial health, with sauna specifically being linked to reduced risk of cardiovascular disease. Increases in blood flow and shear rates associated with heat exposure are often considered to have a major influence on the observed improved endothelial function following heat exposure. The magnitude of these changes in response to sauna have not yet been defined. Therefore, the purpose of this study is to quantify and compare the vascular response to an acute bout of sauna heating in young and middle-aged individuals.METHODS: 10 young (24.9 ± 4.2 years, 6 males and 4 females) and 8 middle-aged adults (55.6 ± 3.9 years 4 males and 4 females) underwent 40 min of sauna exposure at 80 ºC. Esophageal and intramuscular temperatures were recorded throughout the duration of the experiment. Brachial and superficial femoral artery blood flow, artery diameter, and shear rates were recorded at baseline and following heat exposure. Brachial artery flow-mediated dilation (FMD) was measured at baseline and following 90 min of recovery.RESULTS: Core and muscle temperatures significantly increased by 1.5 ± 0.53 and 1.95 ± 0.70 °C, respectively (P < 0.05) and the magnitude of increase did not differ between young and middle-aged participants (P0.867 and 0.488, respectively). Shear rate increased by 170- 200% (P < 0.001), while blood flow increased by 180-390% (P < 0.001) in the superficial femoral and brachial artery, respectively, in both groups. Importantly, the changes in shear and flow did not significantly differ between young and middle-aged subjects for either artery (P = 0.190-0.899.) Systolic blood pressure (SBP) was significantly reduced from 135.25 ± 17.50 to 122.38 ± 19.7 mmHg (P = 0.017) only in middle-aged participants and a decrease in diastolic blood pressure was observed from 81.6 ± 13.0 mmHg at baseline to 69.8 ± 8.4 mmHg (P < .001). Heat-induced dilation was strongly correlated to baseline endothelial function in the young (R = 0.86, P = 0.006), but not the old (R = 0.22, P = 0.631).CONCLUSIONS: These results indicate that young and middle-aged adults have similar shear-rate and blood flow responses to acute sauna heating, which significantly reduces blood pressure in middle-aged, but not young individuals. Future heat therapy studies may elicit meaningful cardiovascular benefits from lower magnitudes of chronic passive heat stress.

ISBN: 9798379868215Subjects--Topical Terms:

532868
Exercise.

A Comparison of the Vascular Response to Acute Sauna Heating in Young and Middle-Aged Adults.
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