身体肥胖指数在哥斯达黎加学生中的预测效度

Predictive validity of the body adiposity index in costa rican students.

作者信息

Carpio-Rivera Elizabeth, Hernández-Elizondo Jessenia, Salicetti-Fonseca Alejandro, Solera-Herrera Andrea, Moncada-Jiménez José

机构信息

School of Physical Education and Sports, University of Costa Rica, San José, Costa Rica.

Human Movement Sciences Research Center (CIMOHU), University of Costa Rica, San José, Costa Rica.

出版信息

Am J Hum Biol. 2016 May;28(3):394-7. doi: 10.1002/ajhb.22800. Epub 2015 Oct 26.

DOI:10.1002/ajhb.22800

PMID:26503822

Abstract

OBJECTIVE

To verify the validity of the body adiposity index (BAI) in a sample of Costa Rican students.

METHODS

Volunteers were 93 females (mean age = 18.6 ± 2.4 years) and 106 males (mean age = 19.2 ± 2.8 years). Dual-energy X-ray absorptiometry (DXA) was used as the "gold standard" to determine body fat percentage (BF%). Pearson's correlation coefficient and paired samples t-test studied the association and mean differences between BAI and DXA BF%. Concordance between BAI and DXA BF% was determined by the Lin's concordance correlation coefficient and the Bland-Altman agreement analysis.

RESULTS

Significant correlations between BAI and DXA BF% were found for females (r = 0.74) and males (r = 0.53) (P < 0.001). Differences between methods were found for females (BAI = 29.3 ± 4.1% vs. DXA = 36.5 ± 7.9%) and males (BAI = 24.8 ± 3.7% vs. DXA = 21.9 ± 8.6%; P < 0.001). Concordance was poor in females and males. Bland-Altman plots showed BAI underestimating and overestimating BF% in relation to the "gold standard" in females and males, respectively.

CONCLUSIONS

BAI presented low agreement with BF% measured by DXA; therefore, BAI is not recommended for BF% prediction in this Central American sample studied. Am. J. Hum. Biol. 28:394-397, 2016. © 2015 Wiley Periodicals, Inc.

摘要

目的

验证身体肥胖指数（BAI）在一组哥斯达黎加学生样本中的有效性。

方法

志愿者包括93名女性（平均年龄 = 18.6 ± 2.4岁）和106名男性（平均年龄 = 19.2 ± 2.8岁）。采用双能X线吸收法（DXA）作为“金标准”来测定体脂百分比（BF%）。通过Pearson相关系数和配对样本t检验研究BAI与DXA测得的BF%之间的关联及均值差异。采用Lin一致性相关系数和Bland-Altman一致性分析来确定BAI与DXA BF%之间的一致性。

结果

女性（r = 0.74）和男性（r = 0.53）的BAI与DXA BF%之间均存在显著相关性（P < 0.001）。发现女性（BAI = 29.3 ± 4.1% vs. DXA = 36.5 ± 7.9%）和男性（BAI = 24.8 ± 3.7% vs. DXA = 21.9 ± 8.6%；P < 0.001）两种方法测得的结果存在差异。女性和男性的一致性均较差。Bland-Altman图显示，相对于“金标准”，BAI在女性中低估了BF%，在男性中高估了BF%。