Articles tagged with Muscles
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Researchers discover 'reactive effort' in sign languages, where movements produce torque on the torso, and find that vocabulary avoids signs requiring extra reactive effort. This biological universal sheds light on language and physical activity.
A new study reveals that treadmill training releases a protein called cathepsin B, which improves memory recall in mice. The findings support the benefits of regular exercise on cognitive function and suggest that this protein may play a key role in maintaining brain health.
A study at IRB Barcelona discovered that Mitofusin 2 is required to preserve healthy muscles in mice, with its loss associated with muscle wastage and sarcopenia. The protein could serve as a therapeutic target to ameliorate sarcopenia in the elderly.
Researcher Erika Geisbrecht is studying the connection between a gene called clueless (clu) and genes that cause Parkinson's disease in fruit flies. She aims to understand how muscles develop and maintain themselves throughout a fruit fly's life to apply this knowledge to humans.
A woman with amnesia, Lonni Sue Johnson, surprisingly retains detailed knowledge of skills she once performed well in, such as art and flying, despite losing memories of facts about her life. Researchers at Johns Hopkins University find that skill-related memory can be spared even with severe losses in other kinds of knowledge.
Researchers at McMaster University found that physical activity can retain, repair, and regenerate damaged muscle in the elderly. After eight weeks of exercise, old mice were able to repair and rebuild muscle more quickly following injury compared to non-exercise groups.
A new study published in The FASEB Journal suggests that regular exercise can improve muscle repair in older adults, allowing them to regain lost muscle mass and recover from injury more quickly. After just eight weeks of exercise, old mice experienced faster muscle repair and regrowth compared to non-exercised controls.
A study published in Frontiers in Physiology found that accentuated eccentric loading training can lead to greater strength gains compared to traditional isoinertial loads. After five weeks, experienced strength-trainers showed improvements in force production, work capacity, and muscle activation.
A study published in Cell Metabolism found that osteocalcin, a bone-derived hormone, increases muscle performance during exercise. Osteocalcin levels naturally decline with age, affecting men and women differently, with the decline occurring about 15-20 years sooner in women.
A new treatment approach has shown promising results in improving symptoms of juvenile dermatomyositis (JDM) in children, a rare chronic autoimmune disease. The study found significant reductions in muscle weakness and skin inflammation, as well as improved overall disease activity.
A team of researchers has pinpointed the genetics behind a select group of garter snakes' ability to eat poisonous newts, revealing an evolutionary 'building blocks' pattern. The study found that resistant muscle evolved after resistant nerves, with the ancestors of garter snakes gaining toxin-resistant nerves almost 40 million years ago.
A revolutionary new sports shot, HOTSHOT, has been scientifically proven to prevent and treat muscle cramps by stopping them at the nerve level. By synchronizing communication between nerves and muscles, HOTSHOT boosts Neuro Muscular Performance, reducing post-exercise muscle soreness.
Scientists at the University of Liverpool have discovered a new potential treatment for muscular dystrophy by identifying an enzyme that impairs muscle repair. Elevated levels of elastase, which breaks down connective tissue, were found to impair muscle stem cell function and survival.
A study published in Nature Communications reveals that replacing a protein complex involved in muscle development may alleviate symptoms of muscular dystrophy. The researchers identified a genetic switch that drives pericytes and PICs to become muscle cells, providing a potential target for drug development.
Researchers developed an actuator that mimics the movement of skeletal muscles using vacuum power, generating movements similar to those of real muscles. The actuators are soft, shock-absorbing, and pose no danger to their environment or humans working alongside them.
A whole-person perspective is needed to accurately assess obesity severity, considering factors like muscle mass and ethnicity. The review article suggests staging obesity treatment from stage 0 to stage 4, with intensive lifestyle modification being crucial for preventing disease progression.
A surgically implanted neuroprosthesis has led to substantial improvement in walking speed and distance for a patient with limited mobility after a stroke. The device stimulates coordinated activity of hip, knee, and ankle muscles, resulting in a more symmetrical and dynamic gait.
A simple screening test can accurately predict the severity of heart disease in patients with heart failure. The test calculates a patient's sarcopenia score based on their age, grip strength, and calf circumference, making it a useful evaluation method for daily clinical practice.
Researchers found resveratrol supplements can help counteract the negative effects of a high fat/high sugar diet on hind leg muscles. The study, published in Frontiers in Physiology, showed that resveratrol supplementation helped maintain muscle function and fatigue resistance.
A flexible exosuit developed by Harvard University researchers reduces the metabolic cost of loaded walking by 7.3% on average, allowing wearers to return to a natural walking profile. The device is composed of textiles and assists the hip and ankle joints, reducing work done without impacting movement freedom.
MSU scientists identified disrupted neuromuscular synaptic function as the underlying cause of motor dysfunction in spinal and bulbar muscular atrophy (SBMA). This discovery offers new avenues for gene therapy targeting muscle tissue.
Researchers found an inverse association between muscle fat and physical activity level, as well as a positive link with body mass index. Ultrasound technology proved advantageous for assessing muscle composition, particularly for individuals with disabilities or certain medical conditions.
Researchers from the University of Birmingham found that extended rest intervals can improve muscle growth by increasing myofibrillar protein synthesis. They recommend at least 2-3 minutes of rest between sets for novice weight trainers, while experienced lifters may not experience the same blunted response.
A new study from Wake Forest University found that testosterone influences the evolution of a waving display in male Bornean rock frogs. The research revealed that testosterone increases foot-flagging behavior and changes how hormones act on leg muscles, similar to the change seen in vocal croaks.
A study published in Pediatric Obesity found that vitamin D supplementation during the first year of life is critical for muscle-mass development and less body fat in toddlers. Children who had sufficient vitamin D stores averaged around 450 grams less body fat at 3 years of age.
Researchers at UMass Medical School identified a molecular pathway critical for maintaining smooth muscle tone, which may lead to new treatments for digestive disorders. The study found that genetic deletion of a specific enzyme led to loss of basal tone and fecal incontinence in mice.
A new study by Binghamton University provides a unifying model for genetic disorders, revealing how subtle mutations of the LMNA gene disrupt cell commitment processes. This leads to confusion among cells, causing different organs to malfunction, resulting in various conditions like heart problems and premature aging.
A new machine learning algorithm can identify human facial expressions based on neural activity, with a 60% success rate. The area of the brain responsible for this task is the posterior superior temporal sulcus (pSTS), which activates when looking at images of different facial expressions.
The American Academy of Neurology has updated its guidelines for the use of botulinum toxin in treating spasticity, cervical dystonia, blepharospasm, and chronic migraine. The guideline recommends that botulinum toxin is generally safe and effective for these conditions.
Removing osteopontin from mice with muscular dystrophy reduces inflammation and fibrosis, boosting muscle repair and regeneration. Osteopontin inhibitors may be used to slow disease progression and improve muscle function in DMD patients.
Researchers discovered that high doses of antihistamines can blunt nearly 27% of the gene response after vigorous exercise, which could have implications for athletes and exercisers. The study identified 795 genes affected by histamine receptors, highlighting their role in post-exercise recovery.
A device called NeuroLife has enabled a paralyzed man to perform complex movements such as swiping a credit card and playing a guitar video game with his fingers and hand. The technology, developed by Battelle and Ohio State University Wexner Medical Center, interprets brain signals and bypasses the spinal cord to stimulate muscles.
Researchers discovered a superfast wing muscle in tropical birds, which can move at speeds of over 60 Hz, faster than any animal with a backbone. This adaptation allows birds to perform extravagant courtship displays without sacrificing flying ability.
A new study reveals that muscles controlling the eyes and eyelids are selectively spared in Duchenne muscular dystrophy due to higher utrophin levels. Researchers also found ECC machinery and calcium regulation similar to those of quadriceps muscles, challenging current understanding of muscle function.
A study found that some ICU patients experience persistent muscle wasting even after recovery from critical illness, leading to debilitating disability. The loss of satellite cells is a key factor in this process, contributing to age-related muscle loss and potentially permanent changes in muscle biology.
Researchers discovered that trap-jaw spiders can strike prey at incredible speeds, with some species closing their mouth-parts shut over 100 times faster than the slowest. The high-speed predatory attacks were previously unknown and may have evolved independently in different spider families.
Researchers discovered that trap-jaw spiders can snap their chelicerae shut at incredible speeds, outperforming even the fastest muscles. This high-speed predatory behavior has evolved multiple times within the Mecysmaucheniid family of spiders.
Researchers at the University of Leicester have identified a new biochemical process that controls lung function and contraction during asthma. Disrupting this process can prevent airway narrowing and maintain normal lung function.
Researchers identified ezetimibe and evolocumab as effective alternatives for patients with muscle-related statin intolerance, demonstrating significant reductions in LDL-C levels. The study suggests that both drugs can be administered successfully in such patients, although with varying efficacy.
In a clinical trial of 100 obese men, researchers found that adding testosterone treatment to calorie restriction resulted in increased fat loss and preserved muscle mass. The study suggests that testosterone treatment may be a useful adjunct to weight loss in obese men with low testosterone levels.
Researchers at Umea University discovered that motor learning relies on the independent control of sensory neurons in muscles. This adjustment allows for selectively informative sensory information to be extracted from spindles during learning.
Researchers will follow eight crew members over five years to measure changes in muscle strength and function, with a focus on the ankle and knee joints. The goal is to determine when muscle loss levels off and develop countermeasures to limit losses for future Mars missions.
A University of Guelph professor found that elite athletes in their 80s and 90s have stronger legs and more muscle mass than non-athletes. The study, published in the Journal of Applied Physiology, compared world-class track and field athletes with individuals of the same age who are living independently.
Whole body electrical stimulation has emerged as a popular fitness trend, but several cases of muscle damage and rhabdomyolysis have been reported. Doctors argue that the technology needs to be regulated due to limited scientific evidence on its safety and effectiveness.
Researchers at Kobe University have successfully decoded a sugar molecule linked to muscular dystrophy, revealing its role in causing the condition. By identifying the abnormal synthesis of ribitol 5-phosphate, the team uncovered a potential therapeutic target for treating muscular dystrophy.
A study published in Cognition reveals that a specific facial expression, known as the 'not face', is universally interpreted as a symbol of negative emotion across languages. The researchers found that this expression is identical across native speakers of English, Spanish, Mandarin Chinese, and American Sign Language.
A recent study found that ultrasound-estimated fat content in muscles is inversely associated with physical activity level and positively associated with body mass index. This non-invasive test could be especially useful for individuals with disabilities or certain medical conditions that make other imaging techniques ineffective.
A team of Stirling academics investigated the effects of fish oil supplements on muscle growth, revealing no significant difference in healthy, resistance-trained young men. Muscle biopsies showed no increased uptake of omega-3 fats by muscle cells.
Regular recreational football training significantly improves health profiles in 63-75 year old untrained men, reducing body weight and risk of cardiovascular diseases and diabetes. The study also found that football preserves muscle mass, which is essential for maintaining a physically active lifestyle in older adults.
Researchers found that replacing saturated fat with polyunsaturated fat slows diabetes progression in people with prediabetes whose muscles do not take up glucose properly. In contrast, reducing saturated fat had no effect on progress for those with liver-produced excess glucose.
Researchers at the University of Illinois have developed a new class of miniature biological robots powered by muscle cells genetically engineered to respond to light. The breakthrough allows for non-invasive control over the bots' motion, paving the way for applications in diagnostics, medicine and sensing.
The FDA has cleared Indego exoskeleton for clinical and personal use, allowing people with paralysis to stand up and walk. The device offers advanced features like adjustable robotic assistance and functional electrical stimulation to aid in rehabilitation.
Researchers found that practicing movements at different speeds improves certain nerve functions, particularly for patients with spasticity after a stroke or spine injury. The study suggests tailoring physical therapy routines to reflect the type of neural circuit controlling the movement for optimal rehabilitation outcomes.
A team of Penn researchers discovered a new mechanism linking amino acids to insulin resistance in type 2 diabetics. The study found that high levels of certain amino acids can cause fat accumulation in muscles, leading to insulin resistance.
Researchers found that self-guided exercise programs can be as effective as traditional physical therapy for patients undergoing total hip replacement. The study also suggests that activating the quadriceps muscles immediately after total knee replacement may improve rehabilitation progress.
A new pain management technique, called an adductor canal block, provides effective pain relief while preserving muscle strength in ACL knee surgery patients. The study found a significant reduction in muscle weakness and falls compared to the current standard method.
Researchers have identified a crucial protein complex, ASC-1, that guides the development of motor neurons and their target muscles. This breakthrough could lead to new insights into general disease mechanisms and potentially regenerative therapies for conditions like paraplegia.
Researchers present evidence that extended-release sialic acid supplement stabilizes muscle strength in patients with GNE myopathy, a rare progressive adult-onset muscle disease. Therapy with Ace-ER tablets led to dose-dependent increases in serum sialic acid levels and maintained muscle strength in upper extremities.
Researchers have discovered a specific enzyme, JNK3, that plays a critical role in spinal muscular atrophy and suppressing its activity could reduce disease severity. Mice with spinal muscular atrophy showed significant improvement when the JNK3 enzyme was genetically inhibited.
Scientists at Sanford Burnham Prebys have found that fetal muscle stem cells can remodel their microenvironment to encourage adult muscle regeneration. This discovery provides rationale for developing drugs to trigger this transition, offering new hope for treating muscular dystrophies and muscle-wasting disorders.