Restriction of energy intake induces a loss of body mass that is often regained when the restriction ends. We aimed to determine whether dietary energy density (independent of macronutrient composition) modulates postrestriction regain of body mass. Fifteen female mice consumed ad libitum a standard rodent diet (with 20% added cellulose). They were then subjected to a 20% energy restriction on ...

To determine the influence of weight loss with or without adequate calcium intake on bone turnover and density, we examined the influence of dietary restriction of calcium or energy on body weight (BW), bone mineral density (BMD) and bone turnover in both younger (3 mo) and older (10 mo) female rats (n = 66). Diets were designed to allow feeding at two levels of calcium intake (normal = 78 mg/d...

The aim of the study was to examine the effect of the beta2-adrenoceptor, clenbuterol, on the duodenal epithelium of food-restricted rats. Clenbuterol was administered as a dietary admixture (4 mg/kg diet) to three groups of male Wistar rats (n = 8) housed individually in metabolic cages and fed ad libitum for 15 days at 110% and 160% of the estimated requirement for energy maintenance. Untreat...

Levin, Barry E., and Ambrose A. Dunn-Meynell. Defense of body weight against chronic caloric restriction in obesity-prone and -resistant rats. Am. J. Physiol. Regulatory Integrative Comp. Physiol. 278: R231–R237, 2000.—Half of Sprague-Dawley rats develop and defend diet-induced obesity (DIO) or diet resistance (DR) when fed a high-energy (HE) diet. Here, adult male rats were made DIO or DR afte...

The objective of this study was to determine whether a reduction in energy intake ameliorated the high-fat diet-enhanced spontaneous metastasis of Lewis lung carcinoma in mice. Male C57BL/6 mice were fed the AIN93G diet, a high-fat diet or a high-fat diet with a 5% restriction of the intake. Energy restriction reduced body adiposity and body weight, but maintained growth similar to mice fed the...

The first law of thermodynamics dictates that body mass remains constant when caloric intake equals caloric expenditure. It should be noted, however, that different diets lead to different biochemical pathways that are not equivalent when correctly compared through the laws of thermodynamics. It is inappropriate to assume that the only thing that counts in terms of food consumption and energy b...

I . Male hooded Lister rats given a diet containing 40 mg zinc/kg were described as Znadequate. Other rats were subsequently given diets containing less than I m g Zn/kg. After a period of approximately 5 d these animals ceased to grow and were described as Zn-deficient. 2. Zn-deficient rats offered ad lib. a Zn-deficient diet containing 200 g egg albumenjkg ate only 55 "/o of the weight eaten ...

BACKGROUND Systems to calculate metabolizable energy (ME) in foods and diets are often based on Atwater factors. The accuracy of these factors with low-fat diets high in fiber is unknown when food intake is reduced spontaneously. OBJECTIVE The objective was to evaluate the accuracy of Atwater factors and other systems for calculating ME available from low-fat, high-fiber diets when food intak...

The Vendée Globe is a solo round-the-world sailing race without stopovers or assistance, a physically demanding challenge for which appropriate nutrition should maintain energy balance and ensure optimum performance. This is an account of prerace nutritional preparation with a professional and experienced female racer and assessment of daily nutritional intake (NI) during the race using a multi...

BACKGROUND Obesity is caused by excessive fat or carbohydrate intake. The improvement of obesity is an important issue, especially in Western societies. Both low-carbohydrate diet (LCD) and low-fat diet (LFD) are used to achieve weight loss in humans. To clarify the mechanisms underlying LCD-induced weight loss, especially in early stage, we compared the gene expression in liver, white adipose ...