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The relationship between blood lacta...

Green, James Matthew.

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The relationship between blood lactate and sweat lactate in males and females as well as older and younger males during cycling in the heat.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	The relationship between blood lactate and sweat lactate in males and females as well as older and younger males during cycling in the heat./
作者:	Green, James Matthew.
面頁冊數:	59 p.
附註:	Source: Dissertation Abstracts International, Volume: 60-06, Section: B, page: 2443.
Contained By:	Dissertation Abstracts International60-06B.
標題:	Biology, Animal Physiology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9935550
ISBN:	9780599365759

The relationship between blood lactate and sweat lactate in males and females as well as older and younger males during cycling in the heat.
Green, James Matthew.

The relationship between blood lactate and sweat lactate in males and females as well as older and younger males during cycling in the heat. - 59 p.

Source: Dissertation Abstracts International, Volume: 60-06, Section: B, page: 2443.

Thesis (Ph.D.)--The University of Alabama, 1999.

Lactate in sweat is assumed to be the product of glandular metabolism supporting secretory work of eccrine sweat glands. Previous studies have been equivocal regarding the possible influence of blood lactate on sweat lactate concentration. Sweat rate variations in males vs. females and older vs. younger subjects may also influence sweat lactate concentration. Because factors affecting sweat lactate concentration are not well understood, the current study examined the possible influence of blood lactate on sweat lactate concentration as well as potential age- and gender-associated differences in sweat lactate concentration. Younger males (25.8 +/- 1.5 years), older males (51.5 +/- 3.8 years) matched on height, weight, body fat percent, body surface area, and aerobic fitness, and females (24.1 +/- 2.5 years) similar to younger males on age, body fat percent, and aerobic fitness, completed constant load (CON) cycling (approximately 40% VO2 max) and interval cycling (INT) trials at 32 +/- 1°C WBGT. Trials were preceded by 15 min warmup and followed by 15 min passive rest. Similar total volumes of external work were completed in CON and INT. Sweat and capillary blood samples were analyzed for lactate concentration (mmol/L) at 15, 25, 35, 45, and 60 min. Total body water loss was used to calculate sweat rate (ml/hr). Sweat rates between CON and INT were not significantly different within subjects. Blood lactate was significantly greater during INT at 25, 35, 45, and 60 min, however, sweat lactate concentrations were not significantly different between CON and INT at any point, suggesting that lactate is not cleared from blood to sweat. Sweat rates were significantly greater in males compared to females, however sweat lactate concentrations were not significantly different at any time during CON or INT. Sweat rates and sweat lactate concentrations between older and younger males were not significantly different during CON or INT. These results suggest that sweat rate variations between males and females do not influence sweat lactate concentration, and sweat lactate concentration is not changed due to aging in well-matched males.

ISBN: 9780599365759Subjects--Topical Terms:

1017835
Biology, Animal Physiology.

The relationship between blood lactate and sweat lactate in males and females as well as older and younger males during cycling in the heat.
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