
Tense muscles can be the result of a muscle strain, which is caused by stretching or tearing a muscle fibre. This can be due to overusing muscles, doing the same motions repeatedly, or quick and unexpected movements. Muscle strains can lead to swelling, which is the body's typical response to an injury. This swelling is caused by increased movement of fluid and white blood cells to the injured area. While swelling is a normal reaction, it can sometimes cause more harm than good, especially if it becomes chronic. Chronic swelling can lead to tissue rigidity, making it more susceptible to further injury.
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What You'll Learn

Muscle strain and swelling
Muscle strain, or a "pulled muscle", is an injury that causes stretching of the muscle fibres and can lead to a partial or complete tear of a muscle. This can occur when the force on a muscle is so great that the tissue is damaged. This can happen during activities that require explosive movements, such as pushing off during a sprint or changing directions in cutting sports. It can also be caused by overuse, quick and unexpected movements, or a lack of flexibility or warm-up.
When a muscle is strained, it can damage small blood vessels, causing local bleeding or bruising. It can also irritate nerve endings, leading to pain. The key symptoms of a muscle strain include sudden pain that worsens while contracting the muscle, swelling, and bruising, loss of strength and range of motion.
Swelling is the body's normal reaction to an injury. It is typically the result of inflammation or a buildup of fluid. This increased movement of fluid and white blood cells into the injured area is the body's first step towards healing. However, sometimes the body goes overboard, and the swelling response is excessive, causing more harm than good.
If not treated appropriately, swelling can become chronic or long-term. Chronic swelling leads to tissues becoming more rigid and less pliable, making them more susceptible to further injury. To treat swelling, it is important to protect and rest the injured area, apply ice, compress with a wrap, and elevate the injury above heart level to encourage the swelling to return towards the body.
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Chronic swelling
Swelling is a normal reaction of the body to an injury. It is the result of inflammation or a buildup of fluid. When muscles are injured, they swell up slightly and retain water. This can be identified through an MRI scan.
Chronic muscle inflammation can also be caused by myositis, a rare disease where the body's immune system attacks its muscles. Myositis usually affects the muscles used for movement, such as those in the arms, legs, shoulders, hips, abdomen, and spine. It can also cause muscle weakness, pain, and stiffness. Polymyositis, dermatomyositis, and inclusion body myositis are a few different forms of myositis.
Myositis is typically treated with medications that suppress the immune system, as well as physical therapy to improve muscle function. While there is no cure for myositis, healthcare providers can help manage symptoms through treatment and exercise. It is recommended to consult a healthcare professional if you experience muscle weakness, pain, or other unusual symptoms.
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Acute swelling
Muscle strain or a "pulled muscle" is an injury that causes stretching of the muscle fibres and can lead to a partial or complete tear of a muscle. When a muscle is initially injured, significant inflammation and swelling occur. This is the body's natural response to an injury.
To manage acute swelling, it is important to protect the injured area, rest, and apply ice for the first 72 hours, 20 minutes out of every hour. Chemical ice packs should not be applied directly to the skin to avoid frostbite. Compression with an ace wrap can also help minimize swelling. Elevation of the injury above heart level is another effective technique to encourage swelling to return towards the body instead of collecting in the extremities.
If the swelling persists or occurs alongside other symptoms, it is important to seek medical advice.
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Treatment for swelling
Tense muscles can be caused by muscle strain or a "pulled muscle", which is an injury that causes stretching of the muscle fibres and can lead to a partial or complete tear of a muscle. This can result in swelling, which is a typical reaction of the body to an injury. Swelling is the result of increased movement of fluid and white blood cells into the injured area.
Swelling can be treated with the RICE method, which includes:
- Rest: Avoid activities that cause pain and may further injure the muscle. Do not move the injured body part in a painful way. Movement is good and can increase healing, but it should be pain-free.
- Ice: Apply ice for the first 72 hours, 20 minutes out of every hour. Do not leave ice on for longer, as it may increase swelling. Chemical ice packs should never be applied directly to the skin to avoid frostbite.
- Compression: Use an ace wrap to compress the injured area and minimise swelling. Your athletic trainer or doctor can advise on how to wrap the body part.
- Elevation: Rest with the injury above heart level to encourage swelling to return towards the body.
If the swelling is chronic or lasts longer than 2-3 weeks, consult a doctor. They may recommend medication, exercise, or therapy to address the swelling.
For muscle stiffness, at-home treatments such as hot and cold therapy, over-the-counter pain relievers, and stretching can help. Maintaining proper hydration and electrolyte balance is also important, as dehydration and imbalances can contribute to muscle stiffness.
If the swelling is due to a severe muscle strain, surgery may be required to reattach the damaged muscle and tendon.
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High-intensity exercise and swelling
Tense muscles can be the result of a muscle strain, which is a common injury in both professional and recreational athletes. Muscle strains can be caused by sudden increases in exercise intensity or when the muscle is over-fatigued.
Swelling is a typical response of the body to an injury. It is the result of increased movement of fluid and white blood cells into the injured area. While this is a normal and healthy response, sometimes the body's reaction can be excessive and cause more harm than good.
High-intensity exercise can lead to higher levels of inflammatory mediators, which may increase the risk of injury and chronic inflammation. Intense exercise can cause an increase in white blood cells, pro-inflammatory cytokines, and CRP, which can lead to higher levels of inflammation. Therefore, high-intensity exercise can contribute to swelling, especially if the body is not given appropriate rest time to recover.
However, it is important to note that exercise, in general, can be considered a form of anti-inflammatory therapy. Regular physical exercise training can have anti-inflammatory effects, especially when combined with appropriate resting periods. This is why moderate exercise or vigorous exercise with proper rest periods is recommended to achieve maximum benefit and reduce the risk of inflammation and swelling.
Additionally, specific types of exercises can be beneficial for individuals experiencing swelling. For example, high-intensity interval training (HIIT) can improve blood and lymphatic flow, which can be beneficial for swelling and edema when done correctly. Jogging and other forms of cardiovascular exercise can also be beneficial for lymphoedema and vein issues that cause swelling. Yoga has also been found to improve blood and lymphatic flow, benefiting those with lymphoedema and reducing the risk of swelling.
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Frequently asked questions
Muscle tension is the body's response to stress, exertion, or physical strain. When muscles are tense, they contract and remain in a state of partial contraction for an extended period.
Muscle tension can cause a dull, aching pain and restricted range of motion. It often occurs in the shoulders, neck, and back.
Tense muscles can swell, especially after intense exercise or physical activity. This is due to the microscopic tears and damage that occur in the muscle fibres.
There are several ways to treat muscle tension and swelling, including rest, ice, elevation, and anti-inflammatory drugs. Stretching, heat therapy, and massage can also help reduce muscle tension and improve blood flow.
If you experience severe pain, numbness, or tingling that does not improve with home remedies or over-the-counter pain relievers, you should consult a doctor. In the case of significant swelling or a suspected complete muscle tear, medical attention may be required.











































