Abstract:
PURPOSE:The purpose of this study was to compare the predictive accuracy of previously published skinfold (SKF) equations for estimating body density of 134 premenopausal African-American women (18 to 40 yr). METHODS:The equations cross-validated were: the sum of seven skinfolds equation (JPW7) and the sum of three skinfolds equation (JPW3), both of Jackson et al. (1980); the generalized equation (DWgen) and the age-specific equation (DWage) of Durnin and Womersley (1974); and the equation of Wang et al. (1994). Total body density was determined by hydrodensitometry (BDuww) at residual lung volume and converted to %BFuww using the Siri (1991) formula. The predictive accuracy of the SKF equations tested in this study was evaluated using the cross-validation procedures outlined by Lohman (1992). RESULTS:The validity coefficients (ry,y') ranged from 0.83 (DWgen) to 0.87 (JPW7). The SEEs ranged from 0.0076 g.cc-1 (DWage) to 0.0122 g.cc-1 (Wang), and the total errors ranged from 0.0103 g.cc-1 (JPW7) to 0.0478 g.cc-1 (Wang). The percentage of individual residual scores falling within +/- 3.5% BF for this sample ranged from 31% (DWage) to 58% for the JPW7 equation. Comparison of the predictive accuracy of the five equations indicated that the JPW7 equation was the most valid equation, explaining 75% of the variance in reference body density with no significant difference between average reference BDuww (1.03035 g.cc-1) and average predicted BDJPW7 (1.03152 g.cc-1). CONCLUSIONS:We recommend using the JPW7 equation to assess body composition and %BF of premenopausal African-American women.
journal_name
Med Sci Sports Exercjournal_title
Medicine and science in sports and exerciseauthors
Irwin ML,Ainsworth BE,Stolarczyk LM,Heyward VHdoi
10.1097/00005768-199811000-00015subject
Has Abstractpub_date
1998-11-01 00:00:00pages
1654-8issue
11eissn
0195-9131issn
1530-0315journal_volume
30pub_type
杂志文章abstract:PURPOSE:Studies have shown that the classical sit-and-reach (CSR) test, the modified sit-and-reach (MSR), and the newly developed back-saver sit-and-reach (BS) test have poor criterion-related validity in estimating low-back flexibility but yielded moderate criterion-related validity in hamstring flexibility. The V sit...
journal_title:Medicine and science in sports and exercise
pub_type: 临床试验,杂志文章
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更新日期:2000-09-01 00:00:00
abstract:INTRODUCTION:Ankle proprioception training has been found to improve balance-related gait disorders; however, the relationship between ankle proprioception and specific gait patterns in older adults with and without impaired balance has not been systematically examined. METHODS:This study characterizes gait patterns o...
journal_title:Medicine and science in sports and exercise
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journal_title:Medicine and science in sports and exercise
pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:Medicine and science in sports and exercise
pub_type: 临床试验,杂志文章
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pub_type: 杂志文章
doi:10.1097/00005768-200210000-00020
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
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更新日期:2011-03-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 临床试验,杂志文章
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journal_title:Medicine and science in sports and exercise
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journal_title:Medicine and science in sports and exercise
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更新日期:2011-08-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/MSS.0b013e3181d58a92
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
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journal_title:Medicine and science in sports and exercise
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1995-10-01 00:00:00
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pub_type: 杂志文章
doi:10.1097/00005768-200101000-00008
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
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更新日期:1990-04-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:
更新日期:1983-01-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 临床试验,杂志文章
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更新日期:1994-11-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章,评审
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更新日期:1984-08-01 00:00:00
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pub_type: 杂志文章
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journal_title:Medicine and science in sports and exercise
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更新日期:1996-06-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
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更新日期:2015-04-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
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更新日期:2014-06-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1998-09-01 00:00:00