Bone mineral density, muscle strength and physical activity: A population-based study of 332 subjects aged 15-42 years
The aim of this population-based study was to find out whether differences in levels of physical activity have an influence on bone mass quantity and whether quadriceps muscle strength is a reliable determinant of bone mass. Included were 175 men and 157 women, aged 15-42 years. Bone mineral density...
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Published in | Acta orthopaedica Vol. 68; no. 2; pp. 97 - 103 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
England
Informa UK Ltd
1997
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Subjects | |
Online Access | Get full text |
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Summary: | The aim of this population-based study was to find out whether differences in levels of physical activity have an influence on bone mass quantity and whether quadriceps muscle strength is a reliable determinant of bone mass. Included were 175 men and 157 women, aged 15-42 years. Bone mineral density (BMD) was measured at various sites by dual X-ray absorptiometry (DXA) and single photon absorptiometry (SPA). Muscle strength was assessed using an isokinetic muscle force meter. A questionnaire was used to estimate the level of physical activity. We found a positive correlation between physical activity and BMD for boys at the distal forearm and for girls at the trochanter (age group 15-16 years). Active men (age group 21-42 years) had up to 9% higher BMD levels at the hip than those who were less active. Quadriceps muscle torque was not an independent predictor of BMD.
Our data suggest that a higher level of physical activity-within the limits of a "normal life style"- may have a positive effect on BMD in the proximal femur of young adults, which in turn may lessen the subsequent risk of fracture. |
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ISSN: | 1745-3674 0001-6470 1745-3682 |
DOI: | 10.3109/17453679709003988 |