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Dairy affects acute thermic effect of food in overweight, adolescent boys, but not girls
Author(s) -
Apolzan John W,
Campbell Wayne W,
Carnell Nadine S,
Braun Michelle M,
Teegarden Dorothy,
Craig Bruce A,
Martin Berdine R,
Weaver Connie M
Publication year - 2006
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.20.4.a587-b
Subject(s) - overweight , medicine , endocrinology , environmental health , food science , psychology , pediatrics , zoology , obesity , biology
This study assessed the effects of the source of dietary calcium on postprandial energy expenditure {PP EE, i.e. thermic effect of food (TEF)} in overweight and obese boys {B, n=17, BMI 27.3±1.2 kg/m 2 (mean±SE); age range 12–14y} and girls (G, n=25, 32.6±1.0 kg/m 2 ; 12–15y). Using indirect calorimetry and the Weir equation, resting EE was measured before (fasting, baseline) and for 240 min after each subject consumed a non‐dairy, low‐Ca product (Control, CON, 45±2 mg Ca, n=40), and after consuming either a non‐dairy product with CaCO 3 , (Ca, 670±4 mg Ca, n=19) or a dairy‐based product (DBP, 687±5mg Ca, n=19). Each drink contained 40% of the subjects’ energy need and comparable amounts of macronutrients. Overall, the average and peak PP EE, adjusted for baseline EE (square root transform was used to stabilize the variance), were higher in boys than girls (B 1.25±0.02 kcal/min, G 1.17±0.02, p<0.01; B 1.42±0.03, G 1.30±0.02, p<0.01). For girls, higher calcium intake via Ca or DBP did not influence PP EE. In contrast, for boys the average and peak PP EE were higher with DBP, but not Ca, compared to CON (DBP 1.32±0.04 a , Ca 1.23±0.04 b , CON 1.21±0.03 b , p<0.05; DBP 1.49±0.04 a , Ca 1.43±0.05 b , CON 1.34±0.03 b , p<0.05). These results suggest that calcium does not influence PP EE in girls and boys. The enhanced thermogenic response to dairy for boys, but not girls, suggests gender‐related differences in how dairy is utilized in adolescents. Support: NIH RO1 DK066108, National Dairy Council, The Schwan Food Company, EAS, Inc.; JWA assistantship