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Energy availability and its relation...

Reading, Karen Joanne.

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Energy availability and its relationship to salivary progesterone levels in elite adolescent aesthetic athletes.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Energy availability and its relationship to salivary progesterone levels in elite adolescent aesthetic athletes./
作者:	Reading, Karen Joanne.
面頁冊數:	167 p.
附註:	Source: Masters Abstracts International, Volume: 37-06, page: 1750.
Contained By:	Masters Abstracts International37-06.
標題:	Biology, Animal Physiology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MQ40098
ISBN:	9780612400986

Energy availability and its relationship to salivary progesterone levels in elite adolescent aesthetic athletes.
Reading, Karen Joanne.

Energy availability and its relationship to salivary progesterone levels in elite adolescent aesthetic athletes. - 167 p.

Source: Masters Abstracts International, Volume: 37-06, page: 1750.

Thesis (M.Sc.)--University of Alberta (Canada), 1999.

The purpose of the present study was to examine the role a negative energy balance plays in the development of menstrual abnormalities and whether resting energy expenditure is reduced in order to compensate for the apparent energy deficit in elite adolescent aesthetic athletes. Three groups of female adolescents (age 15 to 18) were studied; ten oligo/amenorrheic athletes, eleven eumenorrheic athletes and eight non-athlete controls. Components of energy balance, body weight/composition, dietary restraint, pubertal maturation and luteal phase salivary progesterone levels were compared. The two athlete groups were similar in all measures except luteal phase progesterone levels. The oligo/amenorrheic athletes had a significantly later pubertal development than the controls and lower luteal phase progesterone levels than the other two groups. Although the oligo/amenorrheic athletes were in a negative energy balance, it was not significantly lower than the other two groups and REE was not depressed. In conclusion, the present study lends no support for reduced REE as a mechanism of energy conservation. Luteal phase progesterone levels appear to be related to the stage of pubertal development and an immature reproductive hypothalamic-pituitary-ovarian axis, which is characteristic of adolescence.

ISBN: 9780612400986Subjects--Topical Terms:

1017835
Biology, Animal Physiology.

Energy availability and its relationship to salivary progesterone levels in elite adolescent aesthetic athletes.
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502 $a Thesis (M.Sc.)--University of Alberta (Canada), 1999.
520 $a The purpose of the present study was to examine the role a negative energy balance plays in the development of menstrual abnormalities and whether resting energy expenditure is reduced in order to compensate for the apparent energy deficit in elite adolescent aesthetic athletes. Three groups of female adolescents (age 15 to 18) were studied; ten oligo/amenorrheic athletes, eleven eumenorrheic athletes and eight non-athlete controls. Components of energy balance, body weight/composition, dietary restraint, pubertal maturation and luteal phase salivary progesterone levels were compared. The two athlete groups were similar in all measures except luteal phase progesterone levels. The oligo/amenorrheic athletes had a significantly later pubertal development than the controls and lower luteal phase progesterone levels than the other two groups. Although the oligo/amenorrheic athletes were in a negative energy balance, it was not significantly lower than the other two groups and REE was not depressed. In conclusion, the present study lends no support for reduced REE as a mechanism of energy conservation. Luteal phase progesterone levels appear to be related to the stage of pubertal development and an immature reproductive hypothalamic-pituitary-ovarian axis, which is characteristic of adolescence.
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