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2003 MAR 6 - (NewsRx.com & NewsRx.net) -- Regular physical activity has been shown to influence good bone health throughout life and has shown promise as a means of prevention and intervention for osteoporosis.
Recent data suggests that bone may be most responsive to the stimulus of weight-bearing exercise during the early childhood growth periods, according to a study presented at the American Academy of Orthopaedic Surgeons' (AAOS) 70th annual meeting in New Orleans.
Previous studies have shown that bone mineral density (BMD) is the single most important factor related to the occurrence of osteoporosis and related fractures. One of the strongest risk factors for future osteoporotic fractures is low BMD and its measurement can be used, in combination with other risk factors, to identify groups at high risk for developing osteoporosis.
The purpose of this study was to compare bone mineral densities of adolescent females involved in sports with varying magnitudes of skeletal loading, or weight-bearing, activity. Weight-bearing describes any activity you do on your feet that works your bones and muscles against gravity. With weight-bearing exercise, bone adapts to the impact of weight and pull of muscle by building more cells and becoming stronger.
Of the three groups studied, Olympic-style weight lifting, competition-level swimming, and competition-level tennis, the resulting data support the concept that the loading stresses of weight-bearing activities such as weight lifting and tennis may facilitate bone accrual in adolescent females to adult levels sooner than in a non-weight-bearing activity such ...
Source: HighBeam Research, Study: Weight-bearing activities in teens promote healthy bone mass.