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Bone properties in overweight pre- and early-pubertal boys
Bareket Falk1, Sarah Braid, Michael Moore
1Dept. of Physical Education and Kinesiology, Faculty of Applied Heatlh Science, Brock University, St. Cathariens, ON Canada.
Pediatric Exercise Science
|March 28, 2008
Summary
Overweight boys in pre- and early-puberty show lower bone strength in their lower extremities. This finding highlights the impact of adiposity on bone health during crucial growth periods.
Area of Science:
- Pediatrics
- Bone Physiology
- Sports Medicine
Background:
- Childhood obesity is a growing concern with potential long-term health implications.
- Bone health is critical during pre- and early-puberty for establishing peak bone mass.
- Quantitative ultrasound (QUS) offers a non-invasive method to assess bone properties.
Purpose of the Study:
- To compare bone strength using quantitative ultrasound (QUS) in normal weight (NW) versus overweight (OW) pre- and early-pubertal boys.
- To investigate the association between adiposity and bone speed of sound (SOS) in this pediatric population.
Main Methods:
- A cross-sectional study involving 28 NW boys (% body fat ≤20) and 15 OW boys (% body fat ≤25).
- Bone strength was assessed using quantitative ultrasound (QUS) via the Sunlight Omnisense device.
- Groups were matched for chronological age, skeletal age, sexual maturity, sports participation, and calcium intake.
Main Results:
- Tibial speed of sound (SOS) was significantly lower in overweight boys (3,554 ± 109 m/s) compared to normal weight boys (3,646 ± 71 m/s).
- Radial SOS did not differ significantly between the NW and OW groups.
- Overweight boys reported lower leisure-time physical activity levels.
Conclusions:
- Higher adiposity in pre- and early-pubertal boys is associated with reduced bone speed of sound (SOS) in the lower extremities.
- These findings suggest that excess body fat may negatively impact bone development in specific skeletal sites during childhood.
- Further research is warranted to understand the mechanisms linking adiposity and bone health in growing children.
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