Abstract：
:Undesirable changes in health-related parameters are thought to occur in retiring female athletes, but this has not been examined in longitudinal studies. The purpose of this study was to examine longitudinal changes in bone mineral density (BMD), body composition, and dietary intake in gymnasts and controls. Nonathletic, college-age women (: n = 9) were selected as a control group for comparison to the gymnasts (n = 10). Initial BMDs for the gymnasts were determined by using dual energy X-ray absorptiometry (Lunar, DPX) at the beginning of their final competitive year. Initial BMDs for the controls were measured during a similar time-frame. Follow-up measurements were made at least 1-year after the initial measurement. Gymnasts had significantly greater BMD of the femoral neck (1.262 versus 1.058 g/cm2, respectively), Ward's triangle (1.230 versus 1.008 g/cm2), greater trochanter (1002 versus 0.822 g/cm2), and total body (1.232 versus 1.145 g/cm2) than controls while still competing (P < .05). Following retirement from competition, (mean years of retirement, 4 years), BMD of the gymnasts remained significantly greater than controls at total body, femoral neck, trochanter, and Ward's triangle (P < .05). Significant declines in femoral neck, Ward's triangle, and greater trochanter BMD were found in both gymnasts and controls (0.72% to 1.9% per year), but only gymnasts had a significant decline at the lumbar spine (0.87% per year). In conclusion, BMD changes in former gymnasts appear to be site-specific, and gymnasts continue to have greater proximal femur BMD than controls, despite their decreased exercise, which may help postpone or prevent osteoporosis later in life.
journal_name
Calcif Tissue Intjournal_title
Calcified tissue internationalauthors
Kudlac J,Nichols DL,Sanborn CF,DiMarco NMdoi
10.1007/s00223-004-0228-4subject
Has Abstractpub_date
2004-12-01 00:00:00pages
482-7issue
6eissn
0171-967Xissn
1432-0827journal_volume
75pub_type
杂志文章abstract：:High PTH levels increase bone turnover and decrease bone mineral density (BMD). Low plasma 25-hydroxyvitamin D (25OHD) levels cause secondary hyperparathyroidism, but the relative contribution of low 25OHD and high PTH levels on risk of fracture is largely unknown. Within the cohort of women (n = 2,016) included in th...
journal_title：Calcified tissue international
pub_type： 杂志文章,多中心研究
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journal_title：Calcified tissue international
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journal_title：Calcified tissue international
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journal_title：Calcified tissue international
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journal_title：Calcified tissue international
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journal_title：Calcified tissue international
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journal_title：Calcified tissue international
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journal_title：Calcified tissue international
pub_type： 杂志文章
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journal_title：Calcified tissue international
pub_type： 杂志文章
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journal_title：Calcified tissue international
pub_type： 杂志文章
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journal_title：Calcified tissue international
pub_type： 杂志文章
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journal_title：Calcified tissue international
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journal_title：Calcified tissue international
pub_type： 杂志文章
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journal_title：Calcified tissue international
pub_type： 杂志文章,评审
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journal_title：Calcified tissue international
pub_type： 杂志文章
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journal_title：Calcified tissue international
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journal_title：Calcified tissue international
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journal_title：Calcified tissue international
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journal_title：Calcified tissue international
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