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The effect of physical activity on b...

Cassell, Cynthia Anne.

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The effect of physical activity on bone mass in obese girls during weight loss.

Record Type:	Electronic resources : Monograph/item
Title/Author:	The effect of physical activity on bone mass in obese girls during weight loss./
Author:	Cassell, Cynthia Anne.
Description:	133 p.
Notes:	Source: Dissertation Abstracts International, Volume: 60-02, Section: B, page: 0580.
Contained By:	Dissertation Abstracts International60-02B.
Subject:	Health Sciences, Nutrition. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9921901
ISBN:	0599211504

The effect of physical activity on bone mass in obese girls during weight loss.
Cassell, Cynthia Anne.

The effect of physical activity on bone mass in obese girls during weight loss. - 133 p.

Source: Dissertation Abstracts International, Volume: 60-02, Section: B, page: 0580.

Thesis (Ph.D.)--University of Cincinnati, 1999.

During growth, especially between prepubescent and earlier adolescents, calcium consumption and physical activity for females may be crucial for optimizing the mineralization of bone. The purpose of this study was to determine if different physical activity levels affect bone mineral density (BMD), bone mineral content (BMC) and lean body mass (LBM) in obese prepubescent females before and following a six month Nutrition Education Weight Loss Program (NEWLP). Forty-four females, mean age 6.56 +/- 1.19, between Tanner stages 2--4, were recruited and assessed for, body composition, height (HT), weight (WT), total body and lumbar spine BMD, BMC, physical activity level (PAS), grip strength (GS), back strength (LFKNEE) and dietary calcium intake at baseline and after completion of the NEWLP. Multivariate regression analysis applying a step down procedure using baseline BMD and BMC as the covariate for the six month BMD and BMC. HT, WT and LBM increased and percent body fat decreased over the length of the study. Body mass index (BMI) was significantly (0.55 +/- 1.26; P ≤ 0.007) different from baseline at six months. The average PAS was 2.57 +/- 0.44 with a range of 1.8 to 3.6. The mean isometric assessment of strength using GS and LFKNEE for subjects was 19.14 +/- 4.71 and 47.16 +/- 12.73 respectively. The average dietary Calcium intake was 1509.45 +/- 408.25 gms. Total body and lumbar spine BMD and BMC were not significantly different from baseline at six months following the NEWLP. Multivariate regression revealed several variables; HT, GS, total bone area, LFKNEE and Calcium, were able to significantly predict baseline and six months. This study is unique in that we were able to predict regional bone mass measurements with positive changes in lean body mass and strength among a group of pre-pubescent females participating in a NEWLP. No detrimental affects on bone mass were observed in this population due to weight loss. Lack of significance in both total body and lumbar spine BMD, BMC, after an adjustment for baseline bone measures among our study sample is believed to be due to the constant mechanical loading upon the skeleton creating by being overweight.

ISBN: 0599211504Subjects--Topical Terms:

1017801
Health Sciences, Nutrition.

The effect of physical activity on bone mass in obese girls during weight loss.
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502 $a Thesis (Ph.D.)--University of Cincinnati, 1999.
520 $a During growth, especially between prepubescent and earlier adolescents, calcium consumption and physical activity for females may be crucial for optimizing the mineralization of bone. The purpose of this study was to determine if different physical activity levels affect bone mineral density (BMD), bone mineral content (BMC) and lean body mass (LBM) in obese prepubescent females before and following a six month Nutrition Education Weight Loss Program (NEWLP). Forty-four females, mean age 6.56 +/- 1.19, between Tanner stages 2--4, were recruited and assessed for, body composition, height (HT), weight (WT), total body and lumbar spine BMD, BMC, physical activity level (PAS), grip strength (GS), back strength (LFKNEE) and dietary calcium intake at baseline and after completion of the NEWLP. Multivariate regression analysis applying a step down procedure using baseline BMD and BMC as the covariate for the six month BMD and BMC. HT, WT and LBM increased and percent body fat decreased over the length of the study. Body mass index (BMI) was significantly (0.55 +/- 1.26; P ≤ 0.007) different from baseline at six months. The average PAS was 2.57 +/- 0.44 with a range of 1.8 to 3.6. The mean isometric assessment of strength using GS and LFKNEE for subjects was 19.14 +/- 4.71 and 47.16 +/- 12.73 respectively. The average dietary Calcium intake was 1509.45 +/- 408.25 gms. Total body and lumbar spine BMD and BMC were not significantly different from baseline at six months following the NEWLP. Multivariate regression revealed several variables; HT, GS, total bone area, LFKNEE and Calcium, were able to significantly predict baseline and six months. This study is unique in that we were able to predict regional bone mass measurements with positive changes in lean body mass and strength among a group of pre-pubescent females participating in a NEWLP. No detrimental affects on bone mass were observed in this population due to weight loss. Lack of significance in both total body and lumbar spine BMD, BMC, after an adjustment for baseline bone measures among our study sample is believed to be due to the constant mechanical loading upon the skeleton creating by being overweight.
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