Rats fed
isocaloric diets in which the fat source was varied among three groups — a beef tallow group (primarily saturated fat, 3 % PUFA), an olive oil group (primarily unsaturated, 10 - 15 % PUFA), and a safflower oil group (78 % PUFA)-- had highly variable weight gains.
If such a diet performs identically to standard
isocaloric diets in terms of fat loss and metabolic improvement, then maybe the calorie - is - a-calorie folks are right.
One study in particular, showed that two weeks of snacking based on peanuts does not cause the same negative metabolic effects as
an isocaloric diet in which the snacking is based on short acting carbohydrates in the form of candy in non-obese healthy subjects.
Not exact matches
In an experiment with two groups of adults, while one group did targeted ab exercises five days a week for six weeks, the other focused on keeping a balanced «
isocaloric diet.»
Finally, we compared the
diet enriched
in soybean oil to an
isocaloric diet that contained the same amount of total fat (40 % kcal, Americans consume 34 - 37 % fat) but with 90 % of the fat from coconut oil.
Although we found no difference after 1 day or 1 week, intestinal bacterial overgrowth was observed
in the gastrointestinal tract of mice fed alcohol for 3 weeks compared with control mice fed an
isocaloric liquid
diet.
Methods: Adult C57Bl / 6 mice were subjected to
isocaloric high - fat / high - sucrose
diets (HFD), enriched
in either saturated or monounsaturated fat, or a control low - fat
diet (LFD).
In brief, the weight loss was accomplished by one of two hypocaloric (1400 kcal / d)
isocaloric pseudo-Dukan
Diets (higher protein & lower fat than Atkins)
In a landmark study, researchers gave participants
isocaloric diets (meaning they both had the same amount of calories) with two different ratios of carbohydrates to protein.
Because insulin appears to act synergistically with leptin
in the hypothalamus (36), this increase
in insulin AUC may have contributed to the increased satiety observed with the
isocaloric high - protein
diet.
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.
The
isocaloric high - protein
diet led to significant increases
in AUC values for the 24 - h insulin profiles obtained during visit CRC2 compared with those obtained during either visit CRC1 or CRC3.
Our subjects reported a marked increase
in satiety with the
isocaloric high - protein
diet despite an insignificant change
in leptin AUC between visit CRC1 and visit CRC2.
The subjects reported a clear decrease
in hunger and increase
in fullness during weeks 3 and 4 of the study after the transition to the
isocaloric high - protein
diet (Figure 2).
Design: Appetite, caloric intake, body weight, and fat mass were measured
in 19 subjects placed sequentially on the following
diets: a weight - maintaining
diet (15 % protein, 35 % fat, and 50 % carbohydrate) for 2 wk, an
isocaloric diet (30 % protein, 20 % fat, and 50 % carbohydrate) for 2 wk, and an ad libitum
diet (30 % protein, 20 % fat, and 50 % carbohydrate) for 12 wk.
The subjects successfully maintained a stable body weight during the
isocaloric diet phase, with no significant change
in mean weight through day 28 (Figure 1).
The
isocaloric high - protein
diet led to no significant change
in nadir plasma concentrations, peak plasma concentrations, or AUC values for the 24 - h leptin profiles obtained during CRC2 compared with those obtained during visit CRC1.
It's the most recent one, called «Energy expenditure and body composition changes after an
isocaloric ketogenic
diet in overweight and obese men.»
[1] Ketogenic
diet benefits body composition and well - being but not performance
in a pilot case study of New Zealand endurance athletes https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5506682 [2] Ketogenic low - carbohydrate
diets have no metabolic advantage over nonketogenic low - carbohydrate
diets https://academic.oup.com/ajcn/article/83/5/1055/4649481 [3] Energy expenditure and body composition changes after an
isocaloric ketogenic
diet in overweight and obese men https://academic.oup.com/ajcn/article/104/2/324/456464 [4] Ketones block amyloid https://www.ncbi.nlm.nih.gov/pubmed/26923399 [5] Ketones Inhibit Mitochondrial Production of Reactive Oxygen Species Production Following Glutamate Excitotoxicity by Increasing NADH Oxidation https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1865572/ [6] The ketogenic
diet may have mood - stabilizing properties https://www.ncbi.nlm.nih.gov/pubmed/11918434 [7] The antidepressant properties of the ketogenic
diet http://www.ncbi.nlm.nih.gov/pubmed/15601609
«Subjects receiving the no - carbohydrate hypocaloric
diets for two weeks demonstrated a similar 47 % decline
in serum T3 [as caloric restriction]... In contrast, the same subjects receiving isocaloric diets containing at least 50 g of carbohydrate showed no significant changes in either T3 or rT3 concentration.&raqu
in serum T3 [as caloric restriction]...
In contrast, the same subjects receiving isocaloric diets containing at least 50 g of carbohydrate showed no significant changes in either T3 or rT3 concentration.&raqu
In contrast, the same subjects receiving
isocaloric diets containing at least 50 g of carbohydrate showed no significant changes
in either T3 or rT3 concentration.&raqu
in either T3 or rT3 concentration.»
The effects of carbohydrate variation
in isocaloric diets on glycogenolysis and gluconeogenesis
in healthy men
In a high quality seven day, randomized, crossover study conducted by Sunehag et al. (2002), twelve healthy, non-obese adolescents (six males, six females) were maintained at home on prepared, isocaloric diets containing 60 % carbohydrate, 25 % fat, and 15 % protein, with 10 % or 40 % of the carbohydrate (6 or 24 % of dietary energy) content provided by fructose (low fructose or high fructose diet, respectively)... The total amounts of fructose ingested in the low and high fructose diets were estimated to be 36 and 133 g / day in females and 40 and 136 g / day in male
In a high quality seven day, randomized, crossover study conducted by Sunehag et al. (2002), twelve healthy, non-obese adolescents (six males, six females) were maintained at home on prepared,
isocaloric diets containing 60 % carbohydrate, 25 % fat, and 15 % protein, with 10 % or 40 % of the carbohydrate (6 or 24 % of dietary energy) content provided by fructose (low fructose or high fructose
diet, respectively)... The total amounts of fructose ingested
in the low and high fructose diets were estimated to be 36 and 133 g / day in females and 40 and 136 g / day in male
in the low and high fructose
diets were estimated to be 36 and 133 g / day
in females and 40 and 136 g / day in male
in females and 40 and 136 g / day
in male
in males.
Protein + exercise works: Interactive effects of an
isocaloric high - protein
diet and resistance exercise on body composition, ghrelin, and metabolic and hormonal parameters
in untrained young men: A randomized clinical trial (Kim et al., 2014)
One comparison of two
isocaloric, energy restricted
diets in bodybuilders showed that a
diet that provided adequate carbohydrate at the expense of protein (1 g / kg) resulted
in greater LBM losses compared to a
diet that increased protein (1.6 g / kg) through a reduction of carbohydrate [32].
To avoid the confounding effects of concomitant changes
in energy and macronutrients, the two study
diets were
isocaloric and the macronutrient composition of the
diets was identical.
Reductions
in the percentage of dietary fat
in isocaloric diets from approximately 40 % to 20 % has resulted
in modest, but significant, reductions
in testosterone levels [53, 54].
However, an
isocaloric diet was used, with only a change
in the percentage of carbohydrate contributing to the
diet.
Thus meaning an
isocaloric diet comprising of the exact same foods: raw vs cooked, would vary
in calorie absorption.
In this study GK rats were fed a
diet containing 30 % resistant starch that was
isocaloric and isonitrogenous when compared to the control
diet.
Effects of an
isocaloric healthy Nordic
diet on insulin sensitivity, lipid profile and inflammation markers
in metabolic syndrome — a randomized study (SYSDIET).
Hormonal and metabolic changes induced by an
isocaloric isoproteinic ketogenic
diet in healthy subjects
Metabolic effects of weight loss on a very - low - carbohydrate
diet compared with an
isocaloric high - carbohydrate
diet in abdominally obese subjects.
In contrast, the same subjects receiving isocaloric diets containing at least 50 g of carbohydrate showed no significant changes in either T3 or rT3 concentratio
In contrast, the same subjects receiving
isocaloric diets containing at least 50 g of carbohydrate showed no significant changes
in either T3 or rT3 concentratio
in either T3 or rT3 concentration.