Sentences with phrase «energy substrate»

Muscles and other tissues progressively switch energy source from glucose to free fatty acids which are converted to ketone bodies (acetoacetate and b - hydroxybutyrate); these become the primary energy substrate for brain and other metabolically active tissues in the absence of adequate glucose supply.

Ketones provided the energy substrate for our brains and bodies when glucose wasn't available, such as in times of famine which was a common occurrence for our early ancestors.

Because you are making a fundamental shift in energy substrate there is metabolic «re-tooling» going on so trying to train through is a recipe for failure.

This free fatty acid then becomes the main energy substrate used by essentially all tissues of the body besides the brain.»

Note that low energy substrate levels DO impact limit strength, but on a relatively localized level (barring low energy levels from extreme exercise or dieting), so a long run should not negatively impact your bench press all that much.

This is a good thing, because acetone is an unstable molecule and is not used as an energy substrate.

FASTER not only challenges the intensity level but coupled with the increased rate of oxidation yields a completely new paradigm for re-thinking how an athlete should approach their aerobic training for energy substrate utilization:

The latter is an essential amino acid which in the last stages of physical activity, the moment when BCAAs begin to act as an energy substrate, enters the brain, where it is converted into serotonin, a brain neurotransmitter that imparts the feeling of fatigue (this is a good reason to take BCAAs before a workout)

Under some conditions it can also be used as an energy substrate, so if the brain needs a lot of energy, it can use some of the glutamine to power the cells.»

We have previously described studies of pacing strategy using various experimental interventions, including faster and slower starts, higher temperatures, hypoxia, hyperoxia and altered energy substrate availability.1 We have proposed the presence of a complex, regulatory system that mediates changes to skeletal muscle motor unit activation and work rate in order both to optimise performance and prevent potentially harmful changes to homeostasis.

If the exercise work rate is free to vary, then experimental interventions such as changes in ambient temperature, oxygen content of the inspired air, energy substrate availability or the provision of incorrect distance feedback all alter the power output (pacing strategy), whereas the rate of increase in RPE has been found to be similar between conditions.13 20 21 24 — 26

For example, they take up energy substrates, like glucose and acetate, and metabolize these chemicals into lactate, which they then release.

Cultured meat is produced by taking stem cells and placing them in a growth culture (an example would be fetal bovine serum, which is extracted from cow uteruses and is rich with energy substrates, amino acids and inorganic salts to support cell metabolism and growth).

In the human body any energy substrates (including protein), can easily be stored as fat.

For endurance athletes, they can actually be quite detrimental - they can throw off the individual's pacing, but since they do not provide any actual increase in energy substrates, may wind up causing early fatigue (due to the athlete coming too fast out of the chute).

If neurons are being starved of glucose by an infection, they will be seeking energy substrates wherever they can find them, and brain usage of ketones will increase more rapidly than in starvation / fasting.

So possibly Jimmy's elevated fasting levels of circulating energy substrates is a harbinger of the future development of diabetes.

Just understand the order in which energy substrates are used by the body: ATP and creatine phosphate during short, intense bursts of activity (5 - 15 seconds of actual activity), glucose for medium duration activity (20 seconds to a minute or two), and fat stores once effort is extended out beyond that.

In other words, the gut microbiota is able to regulate which energy substrates the heart is able to use.

Bear in mind that the body can and will take longer to recover from high intensity short duration cycling than low intensity long duration cycling as far as limit strength is concerned - energy substrates are what are depleted during long distance low intensity cycling, and energy substrates are NEVER THE LIMITING FACTOR IN MAXIMUM EFFORT LIFTS.

Not exact matches

In the RAPTOR process, the pre-treated and blended substrate slurry is transferred into a mixed digester that uses energy efficient and low maintenance mechanical mixing.

The funding will therefore support research in the newly emerging area of inorganic graphene analogous, with the ultimate aim to revolutionise a wide range of technologies spanning from energy conversion, energy storage, photonics, large area electronics on unconventional substrates and geometries, electronic textile, sensors and spintronics.»

Generation of hydrogen from inexpensive organosilane substrates under ambient conditions without additional energy input represents an exciting advance towards the goal of using hydrogen as a green energy source.

These substrates have taken away a great portion of thermal energy, a serious setback which causes low output power.

One remaining problem is that the high laser energy also results in droplets landing on the substrate next to the desired location.

Wastewater destined for treatment comprises energy - rich substrates including fats, proteins, carbohydrates and many other substances that serve as nutrients for the resident bacteria.

«The 3D transformation process involves a balance between the forces of adhesion to the substrate and the strain energies of the bent, twisted elements that make up the planar precursors,» explained Sheng Xu, a postdoctoral fellow and co-author of the research paper.

High pulse energies are for raw substrate treatment yielding a high level of cell killing and disintegration while moderate pulse protocols are used for recirculate where the focus lies on the control of the microbial community.

«The laser works with a rapid pulse of high - energy photons that do not destroy the graphene or the substrate,» Das said.

While the aerobic metabolism is more efficient than the anaerobic metabolism (i.e., it produces a higher amount of ATP per mol of substrate), producing energy through anaerobic metabolism can provide a high amount of energy in a very short time period.

This study is focused on three specific aspects: to assess the impact of vegetation density on energy efficiency of a roof located at a Mediterranean coastal climate; develop a simplified numeral model that can estimate thermal resistance values equivalent to plants and substrates, and finally, to verify the numerical model by using experimental data.

Investigating how different substrates enhanced or did not enhance the properties of the two - dimensional material, the researchers found that «the substrates can tune the electronic energy levels in molybdenum sulfide due to charge transfer at the interface.»

«We can directly create piezoelectric materials of the shape we want, where we want them, on flexible substrates for use in energy harvesting and other applications,» said Nazanin Bassiri - Gharb, co-author of the paper and an assistant professor in the School of Mechanical Engineering at the Georgia Institute of Technology.

Furthermore, ultra-thin, self - assembled layers on substrates of different surface energies were investigated on their morphology and ion conductive structure for modeling polymer structure in fuel cell electrodes.

BRET (bioluminescence resonance energy transfer) requires only the addition of a suitable substrate to generate donor light emission, as well as energy that can excite fluorescently - labelled ligands in a non-radiative manner.

Sex dimorphism, in substrate and energy partitioning (Figure 3), has been clearly described in details in recent reviews (229, 230).

A combination of extensive state - of - the - art numerical calculations with classic analytical models describing the kinetics of sequential chemical reactions has shown that it is not enough to consider the energy potential landscape (i.e. the energies of the species along the reaction pathway and the associated transformation barriers), but that energy dissipation to the substrate and changes in molecular entropy play a critical role for the stabilization of the intermediates.

The Planetary Habitability Index is based on «the presence of a stable substrate, available energy, appropriate chemistry, and the potential for holding a liquid solvent,» as the paper's abstract notes.

Food intake and energy expenditure are unchanged, but Ad - B2 (− / −) mice exhibit significantly altered substrate utilisation.

Ketosis can only be achieved by feeding the body the necessary substrates while avoiding the foods — such as carbohydrates — that counteract the body's attempts to find and make alternative - energy sources.

Effects of caffeine ingestion on exercise testing: a meta - analysis Effects of caffeine on energy metabolism, heart rate, and methylxanthine metabolism in lean and obese women Authority Nutrition - Coffee: Good or Bad Caffeine and coffee: their influence on metabolic rate and substrate utilization in normal weight and obese individuals.

This is required for the effective transfer of fatty acids to be used as substrates for the generation of energy.

These results are consistent with the hypothesis that ketones can be used in addition to glucose as a substrate for brain energy production even during reduced oxygen availability.»

Joel Jameson has stated in order to improve the aerobic energy system we need to improve the oxygen supply, oxygen utilisation and the substrate availability.

Larson DE, Rising R, Ferraro RT, Ravussin E. Spontaneous overfeeding with a «cafeteria diet» in men: effects on 24 - hour energy expenditure and substrate oxidation.

Spontaneous overfeeding with a «cafeteria diet» in men: effects on 24 - hour energy expenditure and substrate oxidation

Post - exercise substrate utilization after a high glucose vs. high fructose meal during negative energy balance in the obese.

Increase energy by supplying an additional fuel substrate that your body and brain can use immediately and readily.

Being a self proclaimed human guinea pig, I do intend to try Rosedale's plan after Christmas and see what the differences are in my biofeedback and training intensity (once I get through the first few weeks of lower energy due to changing substrates, anyway!)

Effects of sleep fragmentation in healthy men on energy expenditure, substrate oxidation, physical activity, and exhaustion measured over 48 h in a respiratory chamber