Sentences with phrase «libitum energy»

Replacement of dietary fat by sucrose or starch: effects on 14 d ad libitum energy intake, energy expenditure and body weight in formerly obese and never - obese subjects.

Not exact matches

Of particular interest however, is that total energy intake and body weights of IER - fed mice were comparable to ad libitum controls.

We found that RMR, the major component of total daily energy expenditure, did not increase with the high - protein diets and that overall weight loss during ad libitum feeding was fully explained by the cumulative reduction in caloric intake.

We studied the consequences of a 15 % increase in energy from dietary protein in 19 subjects under weight - stable conditions (isocaloric diets) during the first 4 wk of the protocol and during active weight loss (ad libitum diet) in the final 12 wk of the protocol.

Body composition and energy intake data obtained during the final 24 - h periods of the weight - maintaining 15 % - protein diet (visit CRC1), the isocaloric weight - maintaining 30 % - protein diet (visit CRC2), and the ad libitum 30 % - protein diet (visit CRC3) 1

In conclusion, a 15 % increase in energy from dietary protein at constant carbohydrate intake produces a sustained decrease in ad libitum caloric intake that may be mediated by increased CNS leptin sensitivity and results in clinically significant weight loss.

The decrease in insulin AUC to baseline values after 12 wk of the ad libitum high - protein diet most likely reflects a decrease in the stimulus for insulin secretion resulting from the overall decrease in energy intake by this point in the study.

Mean (± SE) spontaneous energy intake decreased by 441 ± 63 kcal / d, body weight decreased by 4.9 ± 0.5 kg, and fat mass decreased by 3.7 ± 0.4 kg with the ad libitum, high - protein diet, despite a significantly decreased leptin AUC and increased ghrelin AUC.

Conclusions: An increase in dietary protein from 15 % to 30 % of energy at a constant carbohydrate intake produces a sustained decrease in ad libitum caloric intake that may be mediated by increased central nervous system leptin sensitivity and results in significant weight loss.

LCKD was instructed to consume an ad libitum diet and restrict carbohydrate intake to less than 50 grams per day (< 10 % of total energy) and CON maintained usual dietary intake.

Mice under time - restricted feeding have an equivalent energy intake from a high - fat diet as those with ad libitum access yet are protected against obesity, hyperinsulinaemia and hepatic steatosis [5, 6].

Ad libitum food intake on a «cafeteria diet» in Native American women: relations with body composition and 24 - h energy expenditure

Anson et al. showed that mice on alternate - day fasting regimen who consume the same amount of food in a 48 - hour period as mice fed ad libitum, decreased glucose and insulin concentrations to a similar degree as did mice on daily calorie restriction despite maintained energy intake and body weight (17).

Assessment of order effects were of interest as they permitted examination of prior sleep history on ad libitum food intake and energy metabolism (i.e., continuous adequate 9 - h sleep opportunities followed by 5 - d sleep restriction and 5 - d sleep restriction followed by 5 - d, 9 - h adequate / recovery sleep opportunities).

Overall, men expended more energy (2,575.6 ± 64.6 kcal / d men versus 2,045.2 ± 56.6 kcal / d women), consumed more calories (3,850.8 ± 118.9 versus 2,277.4 ± 92.4 kcal / d), were in greater positive energy balance (1,275.2 ± 80.2 versus 232.2 ± 74.2 kcal / d), and gained more weight (0.95 ± 0.14 versus 0.13 ± 0.16 kg) than women during ad libitum food availability regardless of sleep opportunity (all sex differences P < 0.0015).

Adhering to these traditional concepts the US Department of Agriculture has concluded that diets, which reduce calories, will result in effective weight loss independent of the macronutrient composition, which is considered less important, even irrelevant.14 In contrast with these views, the majority of ad - libitum studies demonstrate that subjects who follow a low - carbohydrate diet lose more weight during the first 3 — 6 months compared with those who follow balanced diets.15, 16, 17 One hypothesis is that the use of energy from proteins in VLCKD is an «expensive» process for the body and so can lead to a «waste of calories», and therefore increased weight loss compared with other «less - expensive» diets.13, 18, 19 The average human body requires 60 — 65 g of glucose per day, and during the first phase of a diet very low in carbohydrates this is partially (16 %) obtained from glycerol, with the major part derived via gluconeogenesis from proteins of either dietary or tissue origin.12 The energy cost of gluconeogenesis has been confirmed in several studies7 and it has been calculated at ∼ 400 — 600 Kcal / day (due to both endogenous and food source proteins.18 Despite this, there is no direct experimental evidence to support this intriguing hypothesis; on the contrary, a recent study reported that there were no changes in resting energy expenditure after a VLCKD.20 A simpler, perhaps more likely, explanation for improved weight loss is a possible appetite - suppressant action of ketosis.

Subjects were offered 2 high - protein (30 % of energy) ad libitum diets, each for a 4 - wk period — an LC (4 % carbohydrate) ketogenic diet and an MC (35 % carbohydrate) diet — randomized in a crossover design.

Methane production is given (A) per unit of dry matter intake (DMI), (B) as a proportion of gross energy intake (GEI) and (C) per unit of digestible fibre intake (dNDFi)(at 75 % MER and when fed ad libitum) in comparison to ruminants (dark regression line; Franz et al., 2010) and non-ruminant mammalian herbivores (light regression line; Franz et al., 2011b).