Abstract
This study was to test the hypothesis that chronic stimuli from sports participation will have a positive influence on bone remodeling. Five groups of athletes participated in this study; Women's College Volleyball (WVB, n=12), Women's College Soccer (WS, n=19), Men's College Football (MCF, n=9), Men's High School Football (MHSF, n=19), and Men's Weight Training (MWT, n=11). Bone mineral density (BMD) was measured using dual energy x-ray absorptiometry (DEXA, Hologic QDR 1500) for the hip, spine, and whole body. Markers of remodeling, osteocalcin (Ost) a marker of bone formation and pyridinoline (Pyr) a marker of bone resorption were measured both pre- and post-season (12 week season). Ost was measured by a Diagnostics Systems Laboratories, Inc. kit and Pyr by a Metra Biosystems, Inc. kit. WS was the only group that had significant changes in either marker of remodeling.(*=p≤0.05) Table The significant differences in remodeling markers correlated to losses of BMD for the WS. The MHSF group had a 12.6% increases in lumbar BMD, which was not correlated to changes in remodeling markers. It appears that the sports volleyball, football, and regular weight training did not have enough stimulus to after bone remodeling. This may be due to the length of the seasons.
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