Kalcium = fettförbränning?

[Tommer40]

"Kalcium har visat sig hjälpa till med fettförbränningen", är det så?
Sedan läste jag någonstans att man i så fall samtidigt måste tillföra Magnesium? Nån som vet?

[Eddie Vedder]

Ursprungligen postat av Tommer40

"Kalcium har visat sig hjälpa till med fettförbränningen", är det så?

Ja det finns helt klart forskningsresultat som perkar på det. Många studier ser åtminstone ett klart samband mellan både ökade fettförluster vid kaloriunderskott och upprätthållande an kroppsvikten.

Så det förefaller troligt att kalcium kan ha fördelaktig metabol inverkan ja.

Discussion: The present study provides evidence that consumption of a beverage containing green tea catechins, caffeine, and calcium increases 24-hour EE by 4.6%, but the contribution of the individual ingredients cannot be distinguished. Although this increase is modest, the results are discussed in relation to proposed public health goals, indicating that such modifications are sufficient to prevent weight gain. When consumed regularly as part of a healthy diet and exercise regime, such a beverage may provide benefits for weight control.

Effect of a Thermogenic Beverage on 24-Hour Energy Metabolism in Humans. Obesity 15:349-355 (2007)

The purpose of this study was to test the effect of acute dairy calcium intake on exercise energy metabolism and endurance performance. Trained female runners completed two trials. Each trial consisted of a 90-min glycogen depletion run followed by a self-paced 10K time trial, conducted one hour after consumption of a high dairy (500 mg Ca+2) or low dairy (80 mg Ca+2) meal. During the 90-min run, blood samples and respiratory gases were collected. No treatment main effects of acute dairy intake were found for respiratory exchange ratio (RER), calculated fat oxidation, lactate, glycerol, or 10K time. Following this protocol, acute dairy calcium intake did not alter fat utilization or endurance performance in trained female runners.

The acute effects of dairy calcium intake on fat metabolism during exercise and endurance exercise performance. Int J Sport Nutr Exerc Metab. 2006 Dec;16(6):565-79.

http://www.obesityresearch.org/cgi/c...tract/15/2/349

Abstract
Dairy Ca intake has been shown to be superior to elemental Ca in increasing the loss of body fat during energy restriction. We questioned whether the mechanisms involved an increase in postprandial energy expenditure, fat oxidation and/or a greater lipolysis. The acute effects of different sources of Ca were examined in eight subjects, aged 47–66 years and BMI 27·6–36·1kg/m2, in a three-way cross-over study. Subjects were randomly provided breakfast meals either low in dairy Ca and vitamin D (LD; control), high in non-dairy Ca (calcium citrate) but low in vitamin D (HC) or high in dairy Ca and vitamin D (HD). Diet-induced thermogenesis, fat oxidation rates (FOR), carbohydrate oxidation rates (COR), insulin, glucose, ΔNEFA and glycerol were measured hourly over a 6h postprandial period. Postprandial data were calculated as a change (Δ) from the fasting value. Results showed that ΔNEFA was significantly different between meals (LD −1·50 (sem 0·26), HC −1·22 (sem 0·32), HD −0·94 (sem 0·27) mmol/l×6h; P=0·035), with a lesser suppression following both high-Ca meals. ΔFOR was significantly higher following the two high-Ca meals (LD −6·5 (sem 2·2), HC 2·93 (sem 2·34), HD 3·3 (sem 2·5) g×6;h; P=0·005), while reciprocally ΔCOR was significantly lower. ΔGlycerol was less suppressed following the high-Ca meals but statistical significance was not achieved. No differences in diet-induced thermogenesis, insulin or glucose were observed. Regardless of source, Ca intake acutely stimulated postprandial fat oxidation; and there was a lesser suppression of NEFA following these meals.

The acute effects of different sources of dietary calcium on postprandial energy metabolism. British Journal of Nutrition (2006), 96:138-144

http://journals.cambridge.org/action...ine&aid=928092

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.

Effect of low- and high-calcium dairy-based diets on macronutrient oxidation in humans. Obes Res. 2005 Dec;13(12):2102-12.

http://www.ncbi.nlm.nih.gov/pubmed/1...ubmed_RVDocSum

DISCUSSION: Increasing dietary calcium significantly augmented weight and fat loss secondary to caloric restriction and increased the percentage of fat lost from the trunk region, whereas dairy products exerted a substantially greater effect.

Calcium and dairy acceleration of weight and fat loss during energy restriction in obese adults. Obes Res. 2004 Apr;12(4):582-90.

http://www.ncbi.nlm.nih.gov/pubmed/1...d_Discovery_RA

The role of dairy foods in weight management. J Am Coll Nutr. 2005 Dec;24(6 Suppl):537S-46S.

http://www.ncbi.nlm.nih.gov/pubmed/1...ubmed_RVDocSum