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- Title
Racial Variations in Appetite-Related Hormones, Appetite, and Laboratory-Based Energy Intake from the E-MECHANIC Randomized Clinical Trial.
- Authors
Dorling, James L.; Church, Timothy S.; Myers, Candice A.; Höchsmann, Christoph; White, Ursula A.; Hsia, Daniel S.; Martin, Corby K.; Apolzan, John W.
- Abstract
African Americans (AAs) have a higher obesity risk than Whites; however, it is unclear if appetite-related hormones and food intake are implicated. We examined differences in appetite-related hormones, appetite, and food intake between AAs (n = 53) and Whites (n = 111) with overweight or obesity. Participants were randomized into a control group or into supervised, controlled exercise groups at 8 kcal/kg of body weight/week (KKW) or 20 KKW. Participants consumed lunch and dinner at baseline and follow-up, with appetite and hormones measured before and after meals (except leptin). At baseline, AAs had lower peptide YY (PYY; p < 0.01) and a blunted elevation in PYY after lunch (p = 0.01), as well as lower ghrelin (p = 0.02) and higher leptin (p < 0.01) compared to Whites. Despite desire to eat being lower and satisfaction being higher in AAs relative to Whites (p ≤ 0.03), no racial differences in food intake were observed. Compared to Whites, leptin increased in the 8 KKW group in AAs (p = 0.01), yet no other race-by-group interactions were evident. Differences in appetite-related hormones between AAs and Whites exist; however, their influence on racial disparities in appetite, food intake, and obesity within this trial was limited.
- Subjects
APPETITE; BLACK people; EXERCISE; FOOD habits; HORMONES; INGESTION; OBESITY; RACE; WHITE people; LEPTIN; GHRELIN; RANDOMIZED controlled trials
- Publication
Nutrients, 2019, Vol 11, Issue 9, p2018
- ISSN
2072-6643
- Publication type
Article
- DOI
10.3390/nu11092018