Details:

Alternative Title:
Am J Clin Nutr
Publisher's site:
http://dx.doi.org/10.3945/ajcn.114.094672
Personal Author:
Freedman, David S ; Ford, Earl S
Freedman, David S ; Ford, Earl S Less -
Description:
Background

Several studies showed that the waist circumference of US adults has increased over the past 25 y. However, because of the high correlation between waist circumference and body mass index (BMI; in kg/m2) (r ~ 0.9), it is uncertain if these trends in waist circumference exceed those expected on the basis of BMI changes over this time period.

Objective

We assessed whether the recent trend in waist circumference was independent of changes in BMI, age, and race-ethnicity.

Design

We analyzed data from the 1999–2000 through 2011–2012 cycles of the NHANES.

Results

The mean waist circumference increased by ~2 cm (in men) and ~4 cm (in women) in adults in the United States over this 12-y period. In men, this increase was very close to what would be expected because of the 0.7 increase in mean BMI over this period. However, in women, most of the secular increase in waist circumference appeared to be independent of changes in BMI (mean: 0.6), age, and race-ethnicity over the 12-y period. We estimated that, independent of changes in these covariates, the mean waist circumference increased by 0.2 cm in men and 2.4 cm in women from 1999–2000 through 2011–2012; only the latter estimate was statistically significant.

Conclusions

Our results indicate that, in women but not men, the recent secular trend in waist circumference is greater than what would be expected on the basis of changes in BMI. Possible reasons for this secular increase, along with sex differences, are uncertain.


Subject:
[+]
Adult
African Americans
Aged
Aged, 80 And Over
Age Factors
Body Mass Index
Female
Health Transition
Humans
Longitudinal Studies
Male
Mexican Americans
Middle Aged
Nutrition Surveys
Obesity, Abdominal
Prevalence
Sex Factors
Waist Circumference
Weight Gain
Whites
Young Adult

Source:
Am J Clin Nutr. 101(3):425-431
Pubmed ID:
25733625
Pubmed Central ID:
PMC4609894
Document Type:
Journal Article
Funding:
CC999999/Intramural CDC HHS/United States
Name as Subject:
National Health and Nutrition Examination Survey (U.S.)
Place as Subject:
United States
Collection(s):
CDC Public Access
Main Document Checksum:
[+]
urn:sha256:b6f684102777163f891266a2d1504eec59a350106a84819c57fe56808234e3dd
File Type:

Supporting Files

• 	nihms725872f4.gif	gif
  	nihms725872f4.jpg	jpeg
  	NIHMS725872-supplement-Supplemental_Table_1.doc	doc
  	nihms725872.nxml	xml
  	nihms725872f1.gif	gif
  	nihms725872f1.jpg	jpeg
  	nihms725872f2.gif	gif
  	nihms725872f2.jpg	jpeg
  	nihms725872f3.gif	gif
  	nihms725872f3.jpg	jpeg

More +