Dlaczego na 50%? ja mówię, że będzie robił z nabiałem na 100%, bo na tym etapie nie ma to znaczenia, powiem więcej być może bez nabiału będzie robił tylko na jakieś 80%. Naukowcy w tej chwili nie sprzeczają się czy nabiał przeszkadza w redukcji, ale na ile pomaga:
Jedni podchodzą do tematu bardziej sceptycznie:
The influence of dairy product consumption on body composition.
Teegarden D.
Interdepartmental Nutrition Program, Purdue University, West Lafayette, IN 47907.
Recent epidemiologic research suggests that dairy product intake or its components (calcium, vitamin D, and amount or source of protein) are associated with lower body weight or body fat. Clinical intervention trials designed to test this association during weight loss are promising, but still controversial. Few data are available on the effect of calcium or dairy products on prevention of weight gain in long-term trials. The mechanisms proposed to mediate the putative effect of dietary calcium are primarily the formation of fecal fatty acid complexes to reduce fat absorption and the regulation of energy metabolism, including lipolysis from adipocytes and fatty acid oxidation, through the calciotropic hormones, parathyroid hormone, and 1,25-dihydroxyvitamin D. Increased energy expenditure, increased satiety, or a shift from fat to lean mass must accompany these changes in lipid metabolism to achieve changes in fat mass; however, measurable changes in these other parameters either have not been tested or have not been noted uniformly. If dairy products or their components have an effect on altering fat
mass, it is likely to be a small change that may have a substantial effect on the incidence of obesity over time.
Inni natomiast są przekonani, że zdecydowanie pomaga:
The role of dairy foods in weight management.
Zemel MB.
The University of Tennessee, 1215 W. Cumberland Ave, Room 229, Knoxville, TN 37996-1920, USA. [email protected]
Dietary calcium appears to play a pivotal role in the regulation of energy metabolism and obesity risk. High calcium diets attenuate body fat accumulation and weight gain during periods of over-consumption of an energy-dense diet and to increase fat breakdown and preserve metabolism during caloric restriction, thereby markedly accelerating weight and fat loss. This effect is mediated primarily by circulating calcitriol, which regulates adipocyte intracellular Ca(2+). Studies of human adipocyte metabolism demonstrate a key role for intracellular Ca(2+) in regulating lipid metabolism and triglyceride storage, with increased intracellular Ca(2+) resulting in stimulation of lipogenic gene expression and lipogenesis and suppression of lipolysis, resulting in adipocyte lipid filling and increased adiposity. Moreover, the increased calcitriol produced in response to low calcium diets stimulates adipocyte Ca(2+) influx and, consequently, promotes adiposity, while higher calcium diets inhibit lipogenesis, promote lipolysis, lipid oxidation and thermogenesis and inhibit diet-induced obesity in mice. Notably, dairy sources of calcium exert markedly greater effects in attenuating weight and fat gain and accelerating fat loss. This augmented effect of dairy products versus supplemental calcium has been localized, in part, to the whey fraction of dairy and is likely due to additional bioactive compounds, such as angiotensin converting enzyme (ACE) inhibitors in dairy, as well as the rich concentration of branched chain amino acids, which act synergistically with calcium to attenuate adiposity; however, these compounds do not fully account for the observed effects, as whey has significantly greater bioactivity than found in these compounds. These concepts are confirmed by epidemiological data as well as recent clinical trials which demonstrate that diets which include at least three daily servings of dairy products result in significant reductions in body fat mass in obese humans in the absence of caloric restriction and markedly accelerates the weight and body fat loss secondary to caloric restriction compared to low dairy diets. These data indicate an important role for dairy products in both the ability to maintain a healthy weight and the management of overweight and obesity.
Nawet na tak hardcorowych dietach jak UD 2.0 jest wyrażna sugestia by proteiny w pewnym stopniu pochodziły z nabiału. Być może kilka dni przed zawodami warto zrezygnować, ale jeśli jest dobra tolerancja to nie polecam wcześniej.
Nie widzę również potrzeby rezygnacji z żółtek, to bardzo, bardzo wartościowy składnik diety.
Zmieniony przez - ellis w dniu 2006-06-19 23:14:28
Tom34
Krzysztof Piekarz
ellis
emillo13
Rothen
sergiusz
chudzio
