Full metadata
Title
The indices of bone changes in response to exercise
Description
The gold standard for bone measurement is DXA (dual energy X-ray absorptiometry). Typically, to observe changes in bone by DXA, a minimum of a 4-month intervention is required. Serum osteocalcin (OST) (a bone formation marker) and quantitative ultrasound (QUS) of the calcaneus can be used as indicators of bone change but the sensitivity and time course of these indices to short term interventions are unknown. The purpose of this study was twofold: to compare monthly changes in OST and QUS in response to jump training and to evaluate the relationship between DXA, OST and QUS. Young women with QUS t-scores less than 1.0 were randomized into a jump training (J) (n=16) or control (C) (n=16). J consisted of a progressive routine of 1 and 2-footed jumping performed 3 days per week for 4 months. Body composition, QUS and OST were measured at baseline, and monthly for 4 months. DXA and 24-hour dietary recalls were completed at baseline and 4 months. Low attrition rate (12.5%) and high compliance (98%) with the exercise intervention was recorded. No significant correlations between QUS and OST existed. No significant differences were observed between groups at baseline in body composition or bone variables. Monthly increases in OST were observed but there were no significant differences over time between groups in any bone variables. OST and QUS may be indicative of short term bone changes but these variables were not specifically sensitive to the jumping intervention in this population of women.
Date Created
2011
Contributors
- Heumann, Kristin Joelle (Author)
- Swan, Pamela D (Thesis advisor)
- Alvar, Brent (Committee member)
- Chisum, Jack (Committee member)
- Lee, Chong (Committee member)
- Vaughan, Linda (Committee member)
- Arizona State University (Publisher)
Topical Subject
Resource Type
Extent
xiv, 246 p. : col. ill
Language
Copyright Statement
In Copyright
Primary Member of
Peer-reviewed
No
Open Access
No
Handle
https://hdl.handle.net/2286/R.I.9037
Statement of Responsibility
by Kristin Joelle Heumann
Description Source
Retrieved on Sept. 20, 2012
Level of coding
full
Note
Vita
Partial requirement for: Ph.D., Arizona State University, 2011
Note type
thesis
Includes bibliographical references (p. 148-174)
Note type
bibliography
Field of study: Physical activity, nutrition and wellness
System Created
- 2011-08-12 03:52:47
System Modified
- 2021-08-30 01:54:14
- 2 years 7 months ago
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