Because motor neurons degenerate with ALS, they can no longer send impulses to the muscle fibers that normally result in muscle movement. Early symptoms of ALS often include increasing muscle weakness, especially involving the arms and legs, speech, swallowing or breathing. When muscles no longer receive the messages from the motor neurons that they require to function, the muscles begin to become smaller. Therefore limbs begin to look "thinner" as muscle tissue atrophies.…
During exercise your muscles are put under stress due to constant contractions this stress can then lead to tears in the muscle fibres, if the body has the correct nutrients during recovery periods the muscle can then repair itself and become stronger this can lead to a increase in muscular endurance.…
Atrophy is the decrease in cell size due to stress or injury. If enough cells undergo atrophy, an entire organ can become atrophic. There are two types of atrophy: physiological and pathological. Physiological atrophy occurs during early development while pathological atrophy can be caused by a number of factors including aging, disuse, and malnutrition. As a person ages, his or her brain and endocrine-dependent organs undergo atrophy and begin to shrink. People who are paralyzed or confined to bed undergo skeletal muscle atrophy due to lack of use. Atrophy due to malnutrition induces autophagic vacuoles, a type of vacuole that destroys other cells.…
What is Duchenne Muscular Dystrophy and where does it come from? Firstly, it is a kind of muscle dystrophy. The word dystrophy refers to when an organ or tissue wastes away. A muscle dystrophy is a group of many inherited disorders that cause loss of muscle tissue and weakness in muscles. Duchenne Muscular Dystrophy is a genetic disorder characterized by progressive muscle degeneration and weakness caused by a defective gene for dystrophin, a protein in the muscles, and founded by French neurologist Guillaume Benjamin Amand Duchenne in the late 19th century.…
Spinal muscular atrophy [SMA] is a disorder in which, you have a loss of motor neurons. Your muscle symmetry is often off. In addition, there is muscle weakness in your spinal cord. This occurs in a hard time sitting up and holding your head up on your own. It is just like when you are a newborn and you need a pillow to sit on the couch. A few major causes of SMA are loss of motor neuron cells or nerve cell. This mutation leads to a deficiency of motor neuron cells or nerve cells. The disorder SMA is tied to the gene "SMN1" and tied to chromosome 5. A few symptoms of this disorder are- difficulty breathing lack of oxygen, difficulty eating, floppy posture, small amount of movement, and all these symptoms will gradually get worse over time. All these symptoms are at about a mild level in the beginning.…
Muscle Fatigue is when a muscle gets tired and does not have the ability to generate a force. It can occur because of too much vigorous exercise (aerobic respiration). Lactic acid is produced when there is a high demand for energy, when there is too much the body gets tiresome and weakens the muscle. (3)You can get rid of lactic acid by doing the right amount of exercise that your body needs and doing it periodically.…
Muscles work like levers and allow the bones at a joint to work like hinges. Muscles pull and move the bones at particular joints; this makes the joint move and therefore the body moves. When a muscle contracts, it pulls the bones at a joint in the direction that it is designed to move. With reduced mobility, muscles can become floppy and make movement slower and more difficult, but when muscles are used on a regular basis, they remain firm and move…
Any athlete has surely experienced a muscle cramp before and can tell you the indescribable pain they emit. The main question is what is a muscle cramp and how is it caused. Someone who frequently undergoes muscle cramps may also wonder ‘how do I prevent these?’ Muscle cramps can be a nuisance and may stope athletes or everyday people from doing what they like.…
Duchenne muscular dystrophy is a genetically inherited disease that causes progressive muscle and bones weakness. The symptoms usually appear before age 6 and may appear as early as infancy. Symptoms can be noticed very early like not sitting and standing independently at the correct age. The age for walking for boys with Duchenne muscular dystrophy is around 18 months. There is progressive muscle weakness of the legs and pelvic muscles, which is caused by a loss of muscle mass. This muscle weakness can cause difficulty climbing stairs. Most Symptoms appear in boys ages 1-6. Because of muscle damage kids Might need braces by the age of 10 and by age of 12 be in be wheelchair. The amount of people using wheelchairs because of duchenne muscular dystrophy is around, 29% of males 5 through 9 years of age, 82% of males 10 through 14 years of age and more than 90% of males 15 through 24 years of age.…
Because patients with muscular dystrophy are especially susceptible to muscle damage, Physical Therapists, who are skilled in the involvement of skeletal muscle and the effects that skeletal muscle has on joints, are Ideal clinicians to care for patients with muscular dystrophy. 2 Physical therapy is most successful when it is began as soon as possible, preferably right after receiving a diagnosis. This way the physical therapist can teach skills and begin interventions before severe joint tightness, muscle tightness, or contractures develop. 1,2 “Light to moderate exercise has been shown to be benefit patients with muscular dystrophy by slowing down the progression of muscle weakness”, however “Over exercising can damage muscles.” 1,2 Maximal…
Soccer is one of the most demanding physical high intensity field games played all over the world. The increasing demand to increase a player’s physical ability both at professional and amateur soccer has grown in recent years. The development of strength and power is paramount to success in most sports, especially those involving short-term, high-intensity efforts. Traditional Strength training programs improve the development of speed & power (Hakkinen and Hakkinen 1993; Rhea et al. 2003) and stability in an athlete leading to the possibility of better kicking performance, though it is important to recognize the role of strength in power Rostgaard et al. (2008). In a normal week amateur players train on average between 2 to 3 hours, these…
imbalances or tissue damage, hence the loss of the ability to contract, or muscle fatigue.…
Vascular dementia is a common cause of dementia in the elderly. Dementia is a condition that affects the brain and causes people to not think well or act normally. Vascular dementia is one type of dementia. It occurs when blood clots block small blood vessels in the brain and destroy brain tissue. Likely risk factors are high blood pressure and advanced age. This disease can cause stroke, migraine-like headaches, and psychiatric disturbances.…
A common cause of disuse atrophy is having a cast put on to immobilize a part of the body. Having a muscle group immobilized prevents an individual from being able to use that muscle causing it to weaken and possibly begin to shrink depending on the amount of time the muscles are not being used. An athlete might develop disuse atrophy recovering from an injury like a torn ACL. In both of these scenarios the muscle are significantly weakened after the recovery period. Blood flow restriction training is a form of therapy that can be used in both of these…
I am a female bodybuilder. To me, bodybuilding means realizing the beauty and strength the body is capable of achieving. What for many is a solely an aesthetic venture has become my daily tribute to the human body as a functional unit. Muscles are beautiful because each microscopic filament forms slowly and deliberately through systematic contractions in training. I get stronger. I lift heavier.…