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Advisor(s)
Abstract(s)
Diet and physical activity (PA) are recognized as important factors to prevent abdominal
obesity (AO), which is strongly associated with chronic diseases. Some studies have reported an inverse
association between milk consumption and AO.
This study examined the association between milk intake, PA and AO in adolescents.
A cross-sectional study was conducted with 1209 adolescents, aged 15–18 from the Azorean
Archipelago, Portugal in 2008. AO was defined by a waist circumference at or above the 90th percentile.
Adolescent food intake was measured using a semi-quantitative food frequency questionnaire, and milk
intake was categorized as ‘low milk intake’ (<2 servings per day) or ‘high milk intake’ ( 2 servings per day).
PA was assessed via a self-report questionnaire, and participants were divided into active (>10 points) and
low-active groups ( 10 points) on the basis of their reported PA. They were then divided into four smaller
groups, according to milk intake and PA: (i) low milk intake/low active; (ii) low milk intake/active; (iii) high milk
intake/low active and (iv) high milk intake/active. The association between milk intake, PA and AO was
evaluated using logistic regression analysis, and the results were adjusted for demographic, body mass
index, pubertal stage and dietary confounders.
In this study, the majority of adolescents consumed semi-skimmed or skimmed milk (92.3%). The
group of adolescents with high level of milk intake and active had a lower proportion of AO than did other
groups (low milk intake/low active: 34.2%; low milk intake/active: 26.9%; high milk intake/low active: 25.7%;
high milk intake/active: 21.9%, P = 0.008). After adjusting for confounders, low-active and active adolescents
with high levels of milk intake were less likely to have AO, compared with low-active adolescents with
low milk intake (high milk intake/low active, odds ratio [OR] = 0.412, 95% confidence intervals [CI]: 0.201–
0.845; high milk intake/active adolescents, OR = 0.445, 95% CI: 0.235–0.845).Conclusion: High milk intake seems to have a protective effect on AO, regardless of PA level
Description
Keywords
Abdominal obesity Adolescents Milk Physical activity
Citation
Publisher
Wiley