Abstract:
:Understanding the etiology of factors influencing bone mineral density (BMD) in Hispanic women for the prevention of osteoporosis was the aim of this investigation. Whole body BMD (WBBMD) of 39 Hispanic, premenopausal women aged 22 - 51 years was measured using dual-energy X-ray absorptiometry (DXA). Maximal aerobic capacity ((.-)VO(2max)) was determined by treadmill ergometry with direct measurement of oxygen consumption. Fat-free mass (FFM) and fat mass were estimated from two independent techniques, DXA and bioelectrical impedance analysis (BIA). A questionnaire was administered to determine weekly physical activity, age of menarche, oral contraceptive (OC) use, parity, and lactation. Factors with significant correlation to WBBMD were weight ( r = 0.74), body mass index ( r = 0.66), fat mass ( r = 0.68 - 0.69), FFM ( r = 0.55 - 0.65), percent fat ( r = 0.43 - 0.55), sagittal diameter ( r = 0.58), waist circumference ( r = 0.53), hip circumference ( r = 0.66) and weekly activity ( r = 0.40). Stepwise multiple linear regression revealed that 73 % of the variance in WBBMD is attributed to fat mass (55 %), FFM (10 %), and (.-)VO(2max) (8 %). When BIA was used instead of DXA in the regression, (.-)VO(2max) was no longer an independent predictor of WBBMD. Fat mass and FFM accounted for 43 % and 20 % of the variance in WBBMD, respectively, explaining a total of 63 % of the variance. The addition of age, age of menarche, weekly physical activity, OC use, parity, and lactation did not make significant contributions to the variance. The findings of this study suggest that fat mass is a stronger predictor of bone mineral density than fat-free mass to BMD; aerobic capacity is another important predictor of BMD in Hispanic premenopausal women.
journal_name
Int J Sports Medjournal_title
International journal of sports medicineauthors
Afghani A,Abbott AV,Wiswell RA,Jaque SV,Gleckner C,Schroeder ET,Johnson CAdoi
10.1055/s-2004-815839subject
Has Abstractpub_date
2004-07-01 00:00:00pages
384-90issue
5eissn
0172-4622issn
1439-3964journal_volume
25pub_type
杂志文章abstract::The effects of two 4-week training programs on knee flexor and extensor strength were measured isokinetically (angular velocity 30 degrees, 180 degrees/s) and isometrically in division IV soccer players. Group A followed a team training program and group B an individual weight training program. Group C served as contr...
journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章
doi:10.1055/s-2008-1025829
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abstract::The influence of a short, supramaximal task of 30 s duration on plasma volume (PV) was tested in 14 female physical education students. Hemoglobin (Hb), hematocrit (Hct), and osmolality (Osm) were tested pre- and post-exercise. Performance of the exercise test, consisting of 30 s all-out pedaling against a load of 4.4...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2008-1026093
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pub_type: 杂志文章
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-1024811
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2008-1026043
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journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-1024657
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journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章
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更新日期:1984-08-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-1021313
更新日期:1992-10-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-965108
更新日期:2008-02-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2005-837468
更新日期:2006-01-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-0043-112501
更新日期:2017-10-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-1021217
更新日期:1993-09-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2008-1026064
更新日期:1982-02-01 00:00:00
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journal_title:International journal of sports medicine
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journal_title:International journal of sports medicine
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journal_title:International journal of sports medicine
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pub_type: 杂志文章,随机对照试验
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更新日期:2011-12-01 00:00:00
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更新日期:1981-08-01 00:00:00
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更新日期:1994-02-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:2004-02-01 00:00:00
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journal_title:International journal of sports medicine
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