Journal
EUROPEAN JOURNAL OF NUTRITION
Volume 58, Issue 5, Pages 2051-2065Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00394-018-1764-4
Keywords
Sedentary behavior; Mediterranean diet; Low-grade inflammation; Moderation; Adolescents; HELENA study
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Funding
- European Community Sixth RTD Framework Programme [FOODCT-2005-007034]
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Aim To assess if a healthy diet might attenuate the positive sedentary-inflammation relation, whereas an unhealthy diet may increase the effect of sedentary behaviors on inflammatory biomarkers. Methods In 618 adolescents (13-17 years) of the European HELENA study, data were available on body composition, a set of inflammation markers, and food intake assessed by a self-administered computerized 24h dietary recall for 2 days. A 9-point Mediterranean diet score and an antioxidant-rich diet z-score were used as dietary indices and tested as moderators. A set of low-grade inflammatory characteristics was used as outcome: several cytokines in an inflammatory ratio (IL-6, IL-10, TNF-alpha, TGF beta-1), C-reactive protein, three cell-adhesion molecules (sVCAM-1, sICAM-1, sE-selectin), three cardiovascular risk markers (GGT, ALT, homocysteine) and three immune cell types (white blood cells, lymphocytes, CD3). Sedentary behaviors were self-reported and analyzed as total screen time. Multiple linear regression analyses tested moderation by diet in the sedentary behaviors-inflammation association adjusted for age, sex, country, adiposity (sum of six skinfolds), parental education, and socio-economic status. Results Both diet scores, Mediterranean and antioxidant-rich diet, were significant protective moderators in the effect of sedentary behaviors on alanine-transaminase enzyme (P=0.014; P=0.027), and on the pro/anti-inflammatory cytokine ratio (P=0.001; P=0.004), but not on other inflammatory parameters. Conclusion A higher adherence to the Mediterranean diet or an antioxidant-rich diet may attenuate the onset of oxidative stress signs associated by sedentary behaviors, whereas a poor diet seems to increase inflammation.
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