A new study has found that girls with high vitamin D levels have stronger muscles than those with low levels. The association was not found in boys, and researchers are unsure why girls benefit more from vitamin D. Vitamin D is an important source of muscle strength, but the exact mechanism is still unclear.
An interdisciplinary team investigates how individual building blocks arrange into regular patterns during embryonic development or healing processes. Researchers use high-resolution video microscopy and novel biomolecules to test findings on fruit flies and human stem cells.
A team from the University of Kansas investigated the Speech-to-Song Illusion, where a spoken phrase is repeated and begins to sound like it's being sung. The researchers found that word detectors initially activate, giving one the perception of speech, but fatigue as the phrase is repeated, shifting perception to a songlike state.
Researchers found that prolonged exposure to high altitude and underfeeding leads to an inability to build muscle mass, a phenomenon mainly observed in older adults. The study highlights the importance of maintaining caloric balance at high altitudes, particularly among unaccustomed lowlanders.
In-school football training has been shown to improve the physical fitness and health of schoolgirls aged 10-12, including those with no prior experience. The study found significant reductions in blood pressure, improvements in muscle strength and balance, and enhanced jumping performance.
A simulation test suggests that the halo system may affect driver head position and motion, potentially compromising steering accuracy. Training and ergonomic adjustments may be necessary to mitigate this effect, particularly for less experienced drivers.
A new study by UC San Francisco scientists reveals how complex articulatory movements are coordinated in the brain during fluent speech. The research found that brain regions responsible for producing speech are organized according to physical needs of the vocal tract, not just linguistic features like phonemes.
New research reveals that the brain can anticipate and adapt to painful movements following an injury, modifying muscle usage accordingly. This adaptation strategy may lead to quicker completion of painful movements but longer reaction times.
A study found that handgrip strength is linked to lung capacity in older Korean women. Testing handgrip strength could be a good way to identify potential impaired lung health.
Researchers developed a new neural interface paradigm that preserves dynamic muscle relationships in amputated limbs, allowing for proprioceptive feedback and movement commands. The technique improved sensation and control of prosthetic limbs, enabling people with artificial limbs to move more efficiently and naturally.
Researchers at The University of Tokyo's Institute of Industrial Science have developed a method to integrate living muscle into robots, overcoming previous issues with force and function. The resulting biohybrid robots achieved remarkable movement and continued muscle function for over a week.
Researchers have developed a novel approach to limb amputation that preserves dynamic muscle relationships, enabling patients to feel the movement of their prosthetic limbs. This new paradigm, called the agonist-antagonist myoneural interface (AMI), has been successfully implemented in a human patient with below-knee amputation.
A study published in JNeurosci reveals a new pattern of neuronal activity in the gastrointestinal tract that generates rhythmic electrical activity in smooth muscle. This finding identifies a previously unknown mechanism for colon movement, suggesting an early feature preserved through nervous system evolution.
A new study suggests that obese patients in intensive care may have a lower risk of muscle wasting and a higher chance of survival compared to non-obese patients. The 'obesity paradox' refers to improved survival rates among critically ill individuals with obesity, potentially due to the adaptive response of the muscle to excess weight.
New research reveals that cigarette smoke directly damages muscles by reducing blood vessel numbers, impacting metabolism and activity levels. This muscle damage is a key risk factor for chronic diseases such as COPD and diabetes.
A recent study has found that 'uniquely human' muscles, such as those associated with bipedalism and facial expressions, are present in various ape species. Researchers have discovered that these muscles are not exclusive to humans, but are also found in bonobos and other apes, suggesting a more complex origin of human soft tissues.
Researchers found that continued treatment of muscle wasting with a soluble growth factor receptor protein improved survival in a pre-clinical cancer model. The study suggests a possible causal link between preserving muscle mass and improved survival, but notes that other factors may also play a role.
A new study found that essential fats in the diet regulate protein secretion in muscles by changing gene expression. Omega-3 and omega-6 fatty acids were shown to improve glucose levels and insulin tolerance in obese rats after 12 weeks on a supplemented diet.
Researchers successfully convert mature skin cells into immature muscle cells using a simple approach, promoting muscle regeneration in injured mice. The induced myogenic progenitor cells (iMPCs) engrafted in damaged tissue and contributed to sustained muscle regeneration.
Researchers at the University of Bristol are developing a realistic model of human skin on artificial robotic muscles. This innovation could lead to more successful transplants for burns patients and revolutionize healthcare.
Researchers at San Francisco State University have discovered a breakthrough technique for testing AMPK protein levels in human muscle cells. This innovative approach allows for precise analysis of individual muscle fibers, enabling better understanding of how the body regulates blood sugar levels.
Researchers identified principles for efficient mechanical systems that generate and amplify kinetic energy. Shorter latch release times amplify power, while longer durations eliminate it, explaining why small spring-based systems are more effective.
A new mathematical model explains how small organisms like mantis shrimp and trap-jaw ants generate their powerful strikes with spring-loaded parts. This knowledge could help design more efficient robots, but it's unclear how these mechanisms work together for optimal performance.
A UK study found a link between long-term use of certain anticholinergic drugs and an increased risk of dementia in patients over 45. The study suggests that clinicians should avoid prescribing these drugs to older patients due to potential cognitive effects.
Researchers found that mid-back muscle decline is associated with increased kyphosis curvature, but not low-back muscle decline. Targeted resistance exercises may help prevent kyphosis progression
Researchers found that children's muscles are more fatigue-resistant and recover faster than those of untrained adults and even well-trained endurance athletes. This discovery may lead to better understanding of how our bodies change from childhood to adulthood and inform the development of athletic potential in children.
Researchers at UW-Madison have developed a new approach to noninvasively measure tendon tension while a person is engaging in activities like walking or running. The technology uses vibrational characteristics to assess tendon force, providing insights into motor control and mechanics of human movement.
Researchers found that Heriaeus melloteei spider venom can block leakage currents through mutated ion channels, potentially treating hypokalemic periodic paralysis. The toxin fixes the voltage-sensing domain of the channel, preventing ions from leaking out and restoring normal muscle function.
A study highlights the importance of strength training for older women to maintain mobility and function. Researchers found that higher physical activity levels significantly improved muscle strength and endurance in both age groups, but particularly in younger women.
A study published by the European Society of Cardiology found that central obesity, even in patients with normal BMI, significantly increases the risk of heart problems. Measuring central obesity can provide a more accurate picture of cardiovascular health than relying solely on BMI.
A study found that wearing an exoskeleton increases stress on the back by up to 53% and stresses different muscles in the torso by anywhere from 56-120%. Despite relieving arm stress, users reported discomfort due to stiff metal rods in the harness.
A recent study found that Tai Chi improves brain metabolism and muscle energetics in older adults. The exercise showed significant increases in neuronal health markers and improved energy production in leg muscles.
A new study found structural and functional changes in the muscles of young adults with Type 1 diabetes, leading to reduced metabolism and greater difficulty controlling blood glucose levels. The study suggests revising exercise guidelines for those with Type 1 diabetes to prevent muscle damage.
A new study from McMaster and York universities found structural and functional changes in the power generation parts of the cell, or mitochondria, of those with diabetes. These changes could result in reduced metabolism, greater difficulty controlling blood glucose and accelerated disability development.
A study has found structural and functional changes in muscles of young adults with Type 1 diabetes, leading to reduced metabolism and increased risk of disability.
A new study found that microgravity during spaceflights has a more significant negative impact on skeletal muscle than low oxygen environments. Researchers suggest that therapeutic and rehabilitative interventions should focus on correcting inactivity rather than hypoxia.
The new muscles are made from carbon fiber-reinforced siloxane rubber and have a coiled geometry, lifting up to 12,600 times their own weight. They also support high mechanical stress and exhibit excellent performance when electrically actuated.
A new study found that individuals with tetraplegia and sleep apnea have distinct responses to airway narrowing, leading to increased risk of sleep disruption. This knowledge can inform targeted therapies for those affected by the condition.
Researchers create StimDust, the smallest deep-tissue stimulator capable of stimulating major therapeutic targets in the peripheral nervous system. The device is powered wirelessly by ultrasound, with an efficiency of 82 percent, and can be implanted in minimally invasive procedures to monitor and treat diseases.
Resistance training increases autophagosome content in young men's muscles, but this effect may be reduced by aging. The study found that UPR is activated by resistance exercise regardless of age, suggesting similar muscle adaptation between young and older individuals.
Researchers at IRB Barcelona found that removing the single mitochondrial protein Opa1 from mouse muscle causes severe inflammation throughout the body, leading to premature death. This study supports the notion that mitochondrial defects underlie diseases of unknown origin involving chronic muscle inflammation.
New research shows that regular muscle stretching can improve blood flow to muscles of the lower leg in elderly people with reduced mobility. This non-invasive exercise technique may help alleviate lower leg problems, such as pain or weakness, and increase walking function in individuals with peripheral artery disease.
A researcher at the University of Pittsburgh is using ultrasound imaging to develop a more precise interface between exoskeletons and individual muscles in people with incomplete spinal cord injuries. This technology aims to provide more efficient rehabilitation tools, reducing the risk of falls during robot-assisted walking.
A new study by Karolinska Institutet reveals that enzyme FIH determines how muscles consume oxygen, with implications for elite athletes and potential new forms of metabolism-affecting drugs.
A randomized clinical trial found that higher protein intake did not increase lean body mass, muscle performance, or physical function in older men. The results suggest that the recommended daily allowance for protein may be sufficient for promoting muscle growth and well-being in this population.
Researchers at Wayne State University are investigating a potential new direction for treating Barth syndrome, a rare and life-threatening genetic disorder. The study aims to activate pyruvate dehydrogenase (PDH) and/or supplement deficient metabolites to reveal a new treatment approach.
Johns Hopkins surgeons develop a modified muscle transplant operation that restores wide and even smiles to selected patients with one-sided facial muscle paralysis. The procedure, published in JAMA Facial Plastic Surgery, shows improvements in smile function, gum exposure, and eye wrinkles.
Researchers discovered a glitch in muscle-blood vessel communication that causes vascular aging, which they reversed using NAD+ and SIRT1-boosting treatments. The findings have implications for therapies targeting humans with vascular aging disorders.
Researchers at MIT have found a compound that promotes new blood vessel growth, boosting endurance in elderly mice by up to 80 percent. The study suggests that this restoration of muscle mass could help combat age-related frailty and related conditions.
Replacing naturally occurring molecules could reverse symptoms of aging, potentially influencing exercise capacity and physical endurance. The study found that restoring blood flow to tissues and organs with age could be reversed by replicating the benefits of exercise.
A new study found that dogs with noise sensitivity and musculoskeletal pain exhibit increased avoidance behaviors and a later age of onset compared to those without pain. The researchers suggest that veterinarians should thoroughly examine dogs with behavior problems associated with noise for potential underlying pain.
A new study found that a Mediterranean diet is associated with higher bone mineral density and greater muscle mass in postmenopausal women. The research, conducted in Brazil, used a food questionnaire and bone scans to measure bone mineral density and appendicular lean mass.
A new study uses brain-computer interface to enhance prosthetic hand control with muscle vibrations, allowing amputees to better control the prosthetic and regain a sense of agency over their movements. The technology has the potential to improve quality of life for those with amputations.
Researchers found that aging muscle shows decreased sensitivity to ADP, resulting in higher levels of reactive oxygen species (ROS) and degenerative loss of muscle mass. Despite exercise resistance training, there were no improvements in age-associated cellular stress.
Researchers identified new genetic clues for enhanced racing pigeon performance through whole genome sequencing and gene expression analysis. They found a polygenic basis for the birds' adaptations, with key genes involved in athletic performance such as CASK, SIK1, and PTPRD.
Researchers have discovered that muscle wasting in old age follows changes in the nervous system, which can be reversed with healthy muscles. The study found that surviving nerves can send out new branches to rescue detached muscle fibers, but this process is not successful in everyone.
Researchers from Brigham and Women's Hospital found that zebrafish larvae with a mutation in DDX27 showed reduced muscle growth and impaired regeneration. The study provides specificity to the processes controlling protein synthesis in muscles, which will hopefully allow for targeted treatments for skeletal muscle diseases.
A recent study published in PNAS found that disrupted mRNA transport into axons leads to impaired nerve function and cell death, exacerbating conditions like ALS and spinal muscular atrophy. The researchers identified a noncoding RNA, 7SK, as playing a crucial role in these transport complexes.
Researchers at Syracuse University are making progress in understanding the disease mechanism of ALS by studying ubiquitin and Ubiquilin-2 protein interactions. They found that ubiquitin eliminates droplets of UBQLN2, a protein-encoding gene linked to ALS and dementia.
Researchers at the Salk Institute have identified ERRγ as a key player in delivering benefits associated with endurance exercise. By increasing ERRγ, they found that skeletal muscle energy production and endurance were restored, making it a potential therapeutic target for conditions such as muscular dystrophy.