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Muscle atrophy is the thinning or loss of muscle tissue, which can cause a reduction in strength. It is often caused by a lack of physical activity, but can also be the result of malnutrition or underlying health conditions. Symptoms of muscle atrophy include reduced muscle mass, muscle weakness, and pain. Treatments include physical therapy, lifestyle changes, and in some cases, surgery. Those experiencing muscle atrophy may feel weaker, have trouble lifting things, and notice an increase in soft spots.
| Characteristics | Values |
|---|---|
| Cause | Lack of physical activity, inadequate nutrition, underlying health conditions, old age, nerve damage |
| Symptoms | Reduced muscle mass, muscle weakness, pain, loss of stamina, difficulty performing daily activities, slow walking, trouble climbing stairs, poor balance |
| Diagnosis | Medical history, listing of prescriptions and medications, tests to rule out other diseases |
| Treatment | Physical therapy, exercise, surgery, functional electrical stimulation, healthy diet |
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What You'll Learn
Muscle atrophy is often accompanied by pain
Muscle atrophy is the loss of muscle bulk, size and girth. It is caused by a lack of physical activity, underlying health conditions, or nerve damage. It is often accompanied by pain, which can manifest as muscle cramps, a pulled or strained muscle, or arthritis. In some cases, atrophy-related pain can be a symptom of a more serious condition, such as cancer, cardiac failure, or muscular dystrophies.
While muscle atrophy itself does not cause pain, the underlying cause of the atrophy may be associated with pain. For example, muscle atrophy can be caused by injuries, such as broken bones or burns, which can be painful. Additionally, conditions such as osteoarthritis, rheumatoid arthritis, and polymyositis, which can lead to muscle atrophy, are also associated with pain and inflammation.
Furthermore, nerve damage, which is a common cause of muscle atrophy, can result in pain. This is known as neurogenic muscle atrophy and can occur due to spinal cord injuries, neurological diseases, or neurological trauma. The pain associated with nerve damage may be chronic and can be accompanied by elevated myofibrillar protein synthesis rates.
It is important to note that pain can also be a precursor to muscle atrophy. When a person experiences pain, they may avoid using a specific muscle or body region, leading to disuse atrophy. Over time, the lack of physical activity and healthy nerve signals can result in a decrease in muscle tissue and muscle weakness.
If you are experiencing muscle pain or atrophy, it is important to seek medical advice. A doctor can help diagnose any underlying conditions and recommend appropriate treatments, such as physical therapy, lifestyle changes, or surgery.
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It can be caused by inadequate nutrition
Muscle atrophy is the loss or thinning of muscle mass. It can be caused by several factors, one of them being inadequate nutrition.
Inadequate nutrition can lead to muscle atrophy because the body needs a sufficient supply of nutrients to maintain muscle health. A diet lacking in lean protein, fruits, and vegetables can impair muscle growth and maintenance. This is especially true for older adults whose bodies produce fewer proteins that promote muscle growth. A reduction in available protein causes muscle cells to shrink, resulting in a condition called sarcopenia, which is a type of muscle atrophy. Sarcopenia is characterised by a decrease in both the number and size of muscle fibres, leading to muscle thinning and weakness.
Malnutrition-related muscle atrophy may also develop as a result of medical conditions that impair the body's ability to absorb nutrients. For example, cachexia is a complex metabolic condition that causes extreme weight loss and muscle atrophy. It is often a symptom of underlying conditions such as cancer, HIV, or multiple sclerosis (MS). People with cachexia may experience a significant loss of appetite or unintentional weight loss despite consuming a large number of calories.
In addition to nutritional deficiencies, muscle atrophy can be caused by age, genetics, and a lack of physical activity. Disuse atrophy occurs when muscles are not used enough, and the body breaks them down to conserve energy. This can be due to a sedentary lifestyle, illness, injury, or certain medical conditions. However, disuse atrophy can often be reversed with regular exercise and improved nutrition.
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It can be caused by ageing
Muscle atrophy is the loss or thinning of muscle tissue. It can be caused by ageing, with the medical term for age-related muscle atrophy being sarcopenia. Sarcopenia is a progressive loss of muscle mass and strength, with muscle weakness being the most common symptom. Sarcopenia is caused by the body producing fewer proteins that promote muscle growth, resulting in smaller muscle cells. This is further exacerbated by changes in certain hormones, such as testosterone and insulin-like growth factor (IGF-1), which also contribute to muscle loss.
Age-related muscle atrophy can greatly impact one's quality of life, as it reduces the ability to perform daily tasks. For example, those with sarcopenia may experience loss of stamina, difficulty performing daily activities, walking slowly, trouble climbing stairs, and poor balance, which can lead to falls.
The effects of sarcopenia can be reversed with lifestyle changes, such as increasing physical activity and improving nutrition. Recommended exercises for those with muscle atrophy include water exercises, which can help make movement easier. Physical therapy can also be beneficial, with functional electrical stimulation (FES) being an effective treatment. This involves placing electrodes on the skin over the muscles, sending small electrical impulses to the nerves and muscles to stimulate muscle contractions and help maintain muscle mass and strength.
It is important to note that muscle atrophy can also be caused by other factors, such as malnutrition, lack of physical activity, or certain medical conditions. If you believe you may have muscle atrophy, it is recommended to consult a doctor for a complete medical examination.
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It can be caused by immobility
Muscle atrophy is the wasting or loss of muscle tissue. It can be caused by immobility, which can be the result of several factors.
Injury or Health Condition
An injury or underlying health condition can cause immobility, leading to muscle atrophy. For example, an injury that requires surgery and a long recovery period may result in a person being bedridden and unable to move certain body parts. This inactivity can cause the muscles to waste away over time. Similarly, a health condition that affects mobility, such as amyotrophic lateral sclerosis (ALS) or Guillain-Barré syndrome, can lead to muscle atrophy due to reduced physical activity.
Ageing
Ageing is a natural cause of muscle atrophy. As people age, their bodies undergo changes that contribute to muscle loss. These changes include a decrease in hormone levels, such as testosterone and insulin-like growth factor (IGF-1), and a reduction in the production of proteins necessary for muscle growth. This results in thinner muscle fibres and a decrease in muscle mass and strength. The rate of muscle loss can vary, but individuals may lose up to 8% of their muscle mass per decade, with the process accelerating between the ages of 65 and 80.
Inadequate Nutrition
Malnutrition or inadequate nutrition can also lead to muscle atrophy. Certain medical conditions, such as cachexia, impair the body's ability to absorb nutrients, resulting in extreme weight loss and muscle atrophy. Additionally, as people age, their bodies may struggle with the conversion of protein into energy, further contributing to muscle atrophy.
Lifestyle
A sedentary lifestyle or decreased activity levels can also cause muscle atrophy. Individuals with seated jobs or health problems that limit movement may be at a higher risk of muscle atrophy due to reduced physical activity. This type of atrophy is often reversible with exercise and improved nutrition.
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It can be treated with physical therapy
Muscle atrophy is the wasting or thinning of muscle mass. It can be caused by muscle disuse, malnutrition, age, genetics, lack of physical activity, or certain medical conditions. The good news is that muscle atrophy due to inactivity is often reversible with physical therapy.
Physical therapy for muscle atrophy involves performing specific stretches and exercises to prevent immobility. A physical therapist will develop a treatment program tailored to the patient's specific needs. This may include resistance training, which can help reverse the effects of disuse atrophy. Muscles respond well to resistance training, as the synthesis of contractile proteins will surpass the degradation process, provided the exercises are performed consistently.
Functional electrical stimulation (FES) is another effective treatment for muscle atrophy. It involves using electrical impulses to stimulate muscle contraction in affected muscles. During FES, electrodes are attached to the atrophied limb, transmitting an electrical current that triggers movement in the limb. Ultrasound therapy is another option, as it uses sound waves to promote muscle healing.
Physical therapy can be especially beneficial for people with spinal muscular atrophy (SMA), a rare genetic disease affecting nerve cells in the brain stem and spinal cord, leading to low muscle tone, muscle weakness, and wasting. Physical therapists help SMA patients develop muscle strength and achieve the ability to move and function at the highest level possible, improving their quality of life.
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Frequently asked questions
Muscle atrophy can make you feel weaker, with people reporting that they have trouble lifting things and doing things that require more strength. Some people also report pains and a more gelatinous feeling.
Muscle atrophy can be treated with lifestyle changes, physical therapy, and in some cases, surgery. Physical therapy can include specific stretches and exercises to prevent immobility, such as water exercises, or exercises in a swimming pool to reduce the muscle workload.
Muscle atrophy is caused by a lack of physical activity. This can be due to injury, an underlying health condition, or simply not doing everyday activities that use muscle power. As people age, their bodies produce fewer proteins that promote muscle growth, which can also lead to atrophy.
