Abstract
1645 OBJECTIVE: The purpose of this study was to analyze the bone mineral density (BMD) of competitive elite male marathon runners. METHODS: The subjects were 11 healthy male marathon runners (mean age = 29.81±2.22 years-old, 61.52±6.65 Kg, 170.80±7.71cm, 6.82±1.96% fat). Hours of training for week were 18±5 hours/week. The total time of training was 7.54±4.20 years. The bone mineral density (BMD) was measured by dual energy x-ray absorptiometry(HOLOGIC QDR-2000) at the lumbar spine (L1-L4), femoral neck (FN) and whole body (WB). RESULTS: The mean BMD (g/cm2) values were 1.040±0.091 (L1-L4), 1.011±0.134 (FN), and 1.174±0.089(WB). Three runners (27%) presented osteopenia at lumbar spine and one runner(9%) presented osteopenia at femoral neck, according to WHO criteria (KANIS, 1994) CONCLUSION: Although those runners are submitted to an intensive weightbearing exercise, we found osteopenia at femoral neck and lumbar spine, probably reflecting the influence of a lower bone mass peak acquired at childhood and adolescence.
Published Version
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