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Female winter sport athletes: Nutri...

Meyer, Nanna Lucia.

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Female winter sport athletes: Nutrition issues during the preparation for the 2002 Olympic Winter Games in Salt Lake City.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Female winter sport athletes: Nutrition issues during the preparation for the 2002 Olympic Winter Games in Salt Lake City./
作者:	Meyer, Nanna Lucia.
面頁冊數:	130 p.
附註:	Source: Dissertation Abstracts International, Volume: 64-01, Section: B, page: 0147.
Contained By:	Dissertation Abstracts International64-01B.
標題:	Health Sciences, Nutrition. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3079043

Female winter sport athletes: Nutrition issues during the preparation for the 2002 Olympic Winter Games in Salt Lake City.
Meyer, Nanna Lucia.

Female winter sport athletes: Nutrition issues during the preparation for the 2002 Olympic Winter Games in Salt Lake City. - 130 p.

Source: Dissertation Abstracts International, Volume: 64-01, Section: B, page: 0147.

Thesis (Ph.D.)--The University of Utah, 2003.

This study evaluated nutrition issues in female winter sport athletes and focused on the following: (a) dietary and fluid intake during nonspecific (dry-land) and specific (on-snow/ice) training, iron status and change in iron status, supplement use, (b) the prevalence of the Female Athlete Triad in winter sport athletes, and (c) bone mineral density (measured by DXA; BMD; g/cm<super>2</super>) compared to age and body mass index (BMI) matched controls (<italic>n</italic> = 21). Forty-one female athletes (age: 26 ± 6 yrs; BMI: 23 ± 1.9 k g/m<super>2</super>) involved in speed skating, snowboarding, freestyle skiing, biathlon, and sliding sports (bobsleigh, skeleton, luge) were enrolled. Results for (a) showed that dietary and fluid intake remained the same, regardless of training environment, and met sport nutrition recommendations for carbohydrate and protein intake. During specific training, energy intake was lower than expenditure (energy balance: −331 ± 854 kcal·d<super>−1</super>; <italic>p</italic> < .05) and hourly fluid intake lower than recommended levels (232 ± 211 ml·hr<super>−1</super> versus 800 ml·hr<super>−1 </super>; <italic>p</italic> < .001). Three athletes had iron deficiency (ferritin <12 ng/ml) at the beginning but not at the end of the study. The results for (b) showed the following prevalence: restrained eating, RE and/or energy imbalance, EI (53%); menstrual dysfunction, MD (59%); stress fractures, SF (18%). No athlete had osteopenia, and RE was not related to MD, and MD and RE were not related to BMD, even though RE was related to EI (<italic>r</italic> = .472; <italic>p</italic> < .005), and SF (83%) occurred more frequently in athletes with MD. Findings for (c) showed that BMD in athletes was between 6 (whole body) and 12% (greater trochanter) above control values. These results were significant with and without adjustment for lean tissue mass (<italic>p</italic> = .01) and were not compromised by MD. This study was the first to assess dietary and fluid intakes in winter sport athletes while preparing for Olympic Games, the first to describe the prevalence of the TRIAD, and one of the few studies to show that higher BMD in athletes compared to controls is independent of lean tissue mass. Dietary and fluid recommendations, TRIAD issues, and further research in bone loading should be tailored to the nuances of winter sports.Subjects--Topical Terms:

1017801
Health Sciences, Nutrition.

Female winter sport athletes: Nutrition issues during the preparation for the 2002 Olympic Winter Games in Salt Lake City.
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502 $a Thesis (Ph.D.)--The University of Utah, 2003.
520 $a This study evaluated nutrition issues in female winter sport athletes and focused on the following: (a) dietary and fluid intake during nonspecific (dry-land) and specific (on-snow/ice) training, iron status and change in iron status, supplement use, (b) the prevalence of the Female Athlete Triad in winter sport athletes, and (c) bone mineral density (measured by DXA; BMD; g/cm<super>2</super>) compared to age and body mass index (BMI) matched controls (<italic>n</italic> = 21). Forty-one female athletes (age: 26 ± 6 yrs; BMI: 23 ± 1.9 k g/m<super>2</super>) involved in speed skating, snowboarding, freestyle skiing, biathlon, and sliding sports (bobsleigh, skeleton, luge) were enrolled. Results for (a) showed that dietary and fluid intake remained the same, regardless of training environment, and met sport nutrition recommendations for carbohydrate and protein intake. During specific training, energy intake was lower than expenditure (energy balance: −331 ± 854 kcal·d<super>−1</super>; <italic>p</italic> < .05) and hourly fluid intake lower than recommended levels (232 ± 211 ml·hr<super>−1</super> versus 800 ml·hr<super>−1 </super>; <italic>p</italic> < .001). Three athletes had iron deficiency (ferritin <12 ng/ml) at the beginning but not at the end of the study. The results for (b) showed the following prevalence: restrained eating, RE and/or energy imbalance, EI (53%); menstrual dysfunction, MD (59%); stress fractures, SF (18%). No athlete had osteopenia, and RE was not related to MD, and MD and RE were not related to BMD, even though RE was related to EI (<italic>r</italic> = .472; <italic>p</italic> < .005), and SF (83%) occurred more frequently in athletes with MD. Findings for (c) showed that BMD in athletes was between 6 (whole body) and 12% (greater trochanter) above control values. These results were significant with and without adjustment for lean tissue mass (<italic>p</italic> = .01) and were not compromised by MD. This study was the first to assess dietary and fluid intakes in winter sport athletes while preparing for Olympic Games, the first to describe the prevalence of the TRIAD, and one of the few studies to show that higher BMD in athletes compared to controls is independent of lean tissue mass. Dietary and fluid recommendations, TRIAD issues, and further research in bone loading should be tailored to the nuances of winter sports.
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650 4 $a Health Sciences, Recreation. $3 1018003
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