OBJECTIVE: Higher calcium and dairy intakes may be associated with lower body weights, but a mechanism in humans has yet to be elucidated. We compared the effects of a dairy-based high-calcium diet and a low-calcium diet on macronutrient oxidation. RESEARCH METHODS AND PROCEDURES: Subjects (10 men and nine women) consumed a low-dairy (LD, approximately one serving per day, approximately 500 mg Ca(2+)/d) or high-dairy (HD, approximately three to four servings per day, approximately 1400 mg Ca(2+)/d) energy balance diet for 1 week. Each diet condition was performed twice. On the 7th day, subjects were studied in a room calorimeter under one of four study conditions, applied in a randomized crossover design. Within each diet condition, subjects were studied under conditions of energy balance and acute energy deficit. The deficit (-600 kcal/d) was induced only for the 24 hours that subjects resided in the room and was achieved by a combination of caloric restriction and exercise. RESULTS: Under energy balance conditions, there was no effect of diet treatment on respiratory quotient or 24-hour macronutrient oxidation. Under energy deficit conditions, 24-hour fat oxidation was significantly increased on the HD diet (HD with deficit = 136 +/- 13 g/d, LD with deficit = 106 +/- 7 g/d, p = 0.02). DISCUSSION: Consumption of a dairy-based high-calcium diet increased 24-hour fat oxidation under conditions of acute energy deficit. We hypothesize that these effects are due to an increased fat oxidation during exercise.
RCT Entities:
OBJECTIVE: Higher calcium and dairy intakes may be associated with lower body weights, but a mechanism in humans has yet to be elucidated. We compared the effects of a dairy-based high-calcium diet and a low-calcium diet on macronutrient oxidation. RESEARCH METHODS AND PROCEDURES: Subjects (10 men and nine women) consumed a low-dairy (LD, approximately one serving per day, approximately 500 mg Ca(2+)/d) or high-dairy (HD, approximately three to four servings per day, approximately 1400 mg Ca(2+)/d) energy balance diet for 1 week. Each diet condition was performed twice. On the 7th day, subjects were studied in a room calorimeter under one of four study conditions, applied in a randomized crossover design. Within each diet condition, subjects were studied under conditions of energy balance and acute energy deficit. The deficit (-600 kcal/d) was induced only for the 24 hours that subjects resided in the room and was achieved by a combination of caloric restriction and exercise. RESULTS: Under energy balance conditions, there was no effect of diet treatment on respiratory quotient or 24-hour macronutrient oxidation. Under energy deficit conditions, 24-hour fat oxidation was significantly increased on the HD diet (HD with deficit = 136 +/- 13 g/d, LD with deficit = 106 +/- 7 g/d, p = 0.02). DISCUSSION: Consumption of a dairy-based high-calcium diet increased 24-hour fat oxidation under conditions of acute energy deficit. We hypothesize that these effects are due to an increased fat oxidation during exercise.
Authors: Connie M Weaver; Wayne W Campbell; Dorothy Teegarden; Bruce A Craig; Berdine R Martin; Rajni Singh; Michelle M Braun; John W Apolzan; Tamara S Hannon; Dale A Schoeller; Linda A DiMeglio; Yvonne Hickey; Munro Peacock Journal: Am J Clin Nutr Date: 2011-09-14 Impact factor: 7.045
Authors: Lynae J Hanks; Krista Casazza; Ambika P Ashraf; Sasanka Ramanadham; Jamy Ard; Molly S Bray; T Mark Beasley; Jose R Fernandez Journal: J Bone Miner Metab Date: 2013-04-02 Impact factor: 2.626
Authors: Lynae J Hanks; Krista Casazza; Amanda L Willig; Michelle I Cardel; T Mark Beasley; Jose R Fernandez Journal: J Pediatr Date: 2010-04-18 Impact factor: 4.406
Authors: Lesley M L Hall; Colin N Moran; Gillian R Milne; John Wilson; Niall G MacFarlane; Nita G Forouhi; Narayanan Hariharan; Ian P Salt; Naveed Sattar; Jason M R Gill Journal: PLoS One Date: 2010-12-01 Impact factor: 3.240