Articles tagged with Metabolic Rate
A new study reveals that ocean warming and oxygen loss will significantly impact marine life productivity, leading to a decline in species diversity. The researchers have developed a metabolic index to predict climate-related changes in geographic range and productivity for various species.
Researchers found that populations of largemouth bass taken from recreational fisheries had significantly lower resting metabolic rates than those from unexploited reference populations. This suggests that recreational fishing may favor fish with lower metabolic rates, which tend to be more aggressive and easier to catch.
A new study found that a vole's aerobic exercise metabolism increased by 48% and basal metabolic rate rose after 13 rounds of selection for enhanced oxygen consumption. Gene expression changes in the heart and liver were identified as the primary adaptive response.
A study by Max-Planck Institute found that great tits' risk-taking behaviour correlates with both metabolic rate and ambient temperature. Birds with high metabolic rates and low temperatures were more likely to approach predators.
A new study at Ohio State University found that experiencing stress before consuming a high-fat meal slows the body's metabolism, potentially contributing to weight gain. The researchers measured the metabolic rate and blood sugar levels of 58 women who reported one or more stressors during the previous day.
A recent study found that sea otter females must provide 930 MJ of energy to raise a pup to independence, equivalent to 96% increase in daily metabolic rate. This extreme exertion may contribute to poor condition and high mortality rates among sea otter mothers.
A study published in the Proceedings of the National Academy of Sciences found that primates, including humans, expend only half the daily energy needed by other mammals. This slow metabolism accounts for their prolonged childhoods, infrequent reproduction, and extended lifespans.
Researchers found that African-American women lost about seven pounds fewer than Caucasian women despite following similar calorie restriction and activity prescriptions. They had lower resting metabolic rates and expended less energy daily.
Researchers at the University of Cambridge have discovered that genetic mutations in the KSR2 gene can lead to severe obesity and reduced basal metabolic rate. This finding provides evidence for the role of genes in regulating energy use in the body, adding complexity to the body's mechanisms for regulating weight.
In free-ranging Daubenton's bats, resting metabolic rate decreases during autumn to accommodate high energy demands of reproduction while minimizing food intake. During spring, the bats use daily torpor to balance energy budgets.
A clinical trial of resveratrol supplements has shown significant metabolic shifts in obese men, comparable to calorie restriction. The study found improved measures of metabolism, lower blood sugar levels, and a drop in blood pressure, with no apparent side effects.
The diving bell spider uses a gill-like structure to extract oxygen from stagnant water, allowing it to stay submerged for over a day. The spiders' metabolic rate is low, similar to other spiders that sit waiting for prey.
A new study of marine snails reveals a significant boost in metabolism between 200 and 80 million years ago. The researchers suggest that this change was driven by the shift from plant-based to predatory diets, which led to an evolutionary arms race.
A recent study published in The Endocrine Society's Journal of Clinical Endocrinology & Metabolism found that higher metabolic rates are associated with early natural mortality, indicating potential acceleration of aging. Higher energy expenditure was linked to increased risk of organ damage and accumulation of toxic substances.
Researchers found that taller people use less energy per stride when walking, making short people less economical walkers due to taking more steps. A new equation can now be used to calculate the energetic cost of walking based on these factors.
A team of researchers studied California seed harvester ants to understand how colony size affects metabolism. They found that the metabolic rate decreases as colony size increases, but not in a straightforward manner.
A new weight-loss supplement, tri-pepper blend, has been shown to burn as many calories as a 20-minute walk. The University of Oklahoma study found statistically significant results, validating product weight-loss claims through measurements of oxygen consumption and carbon dioxide production.
Researchers challenge long-held 3/4-power law of metabolism with new paper, finding support for 2/3 exponent in geometry and network analysis. Empirical evidence from animal studies also aligns with 2/3 exponent, suggesting a potential universal scaling law for metabolism.
Researchers found that smaller migrating blackcaps lose body temperature at night during stopovers to save energy, while heavier birds drop their metabolic rates less. This helps the birds accumulate more fuel and shorten their refueling stops.
The Venus prototype uses near-infrared light to measure metabolic rate, tissue oxygen, and pH without needle pricks. This technology has numerous applications, including emergency medical care, sports performance, and patient monitoring, and may improve survival rates for trauma victims and astronauts in space.
Researchers analyzed 3006 species and found a narrow range of metabolic rates, averaging 0.3-9 Watts per kilogram, which may be linked to the organization of life on Earth. This optimal rate may have favored complex adaptations like breathing and leaf shape.
Scientists discovered an Antarctic fish species that enters a dormant state similar to hibernation to conserve energy during the long winter. The study showed that the fish reduces its metabolic rate even when seawater temperature doesn't decrease, suggesting alternative drivers for this behavior.
A study published in the Proceedings of the National Academy of Sciences found that tropical birds expend less energy at rest compared to northern bird species. The researchers measured basal metabolic rate (BMR) and peak metabolic rate (PMR) in 69 species of tropical birds, finding they used about 18% less energy than temperate birds.
Researchers studied emperor penguin breeding habits to understand how they conserve energy in extreme cold. The study found that deep body temperatures decrease during huddling, but core temperature remains constant, suggesting a trade-off between egg incubation and energy savings.
Carnivores can only sustain body mass up to one ton due to energy intake and expenditure limitations. This explains why large predators like lions and modern-day polar bears are relatively small compared to extinct herbivorous mammals.
Researchers found that waxed and inactive tree frogs have similar metabolic rates as unwaxed, dehydrating frogs, challenging the idea of a hibernation-like dormant state. Tree frogs use wiping behaviors to conserve energy by reducing surface evaporation by up to 4%, but this does not lead to significant changes in metabolic rate.
A twin study published in the Royal Society journal examines the genetic influences on female orgasmic function, suggesting a significant heritability component. The research highlights the complex interplay of biological and environmental factors contributing to individual differences in female orgasmic function.
Researchers discovered that mice with the highest metabolic rate lived 36% longer than those with lower rates, potentially adding an extra 27 years to human lifespan. The most metabolically active mice contained factors that made their metabolism less efficient but reduced toxic by-products called oxygen free radicals.
Researchers at the University of Pennsylvania School of Medicine have discovered a fat cell hormone, adiponectin, that can cause weight loss in mice by increasing their metabolic rate. This finding has far-reaching potential to help treat obesity-related diseases such as diabetes and heart disease.
Studies show that the Curves program leads to significant weight loss, increased muscle mass, and improved health markers such as blood pressure and aerobic fitness. Women participating in the program experience a 20-30% improvement in strength and a 15% increase in aerobic capacity.
A new tumour growth model views the tumour as an integral part of the body, dependent on host metabolic rate and food intake. The model predicts that tumours develop faster in younger hosts and have higher life expectancy with low-calorie diets.
A team of UC Irvine researchers found that pythons expend excessive energy in digestion when consuming protein-rich foods. The study revealed that the metabolic rate needed for digestion is based on the content of the food, not its volume.
A recent study published in the American Journal of Clinical Nutrition found that a low-calorie diet can slow down metabolism, but when stopped, the metabolic rate returns to normal. Variations in resting metabolic rate do not predict weight regain, suggesting other factors are at play.