Athena Vale
Muscle tears are common injuries in sports, and they can have a high recurrence rate, often resulting in the loss of ability to participate in training or competition. A wide variety of treatment strategies are available, but many therapeutic approaches are based on best practice rather than evidence-based data. A 1999 study by Yale University School of Medicine examined the effects of anabolic steroids and corticosteroids on the healing of muscle injuries. The study found that while corticosteroids showed initial improvement, they caused irreversible damage to healing muscles in the long term. On the other hand, anabolic steroids may aid in the healing of muscle injuries and speed up recovery without causing weakness in the muscles. More recently, a 2025 study found that weekly doses of glucocorticoid steroids, such as prednisone, can help speed recovery in muscle injuries and repair muscles damaged by muscular dystrophy. These findings suggest that the use of steroids may have potential benefits in healing muscle tears, but further research is needed to fully understand their effects and applications.
| Characteristics | Values |
|---|---|
| Types of steroids | Anabolic steroids, corticosteroids, glucocorticoid steroids |
| Anabolic steroids | May aid in the healing of muscle contusion injury and speed up recovery of force-generating capacity |
| Corticosteroids | May be beneficial in the short term but cause irreversible damage to healing muscles in the long term |
| Glucocorticoid steroids | Help speed up recovery in muscle injuries and repair muscles damaged by muscular dystrophy |
| Types of studies | Animal studies, human studies |
| Animal studies | Conducted on rats, hamsters, and mice |
| Human studies | Limited evidence-based data available |
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What You'll Learn
Anabolic steroids may aid in the healing of muscle tears
Anabolic steroids are considered renegade drugs, but they may aid in the healing of muscle tears. While there is limited evidence-based data on the treatment of muscle tears, a study by John M. Beiner, Peter Jokl, Jacek Cholewicki, and Manohar M. Panjabi in 1999 found that anabolic steroids may aid in the healing of muscle contusion injuries. The study, conducted on rats, found that the use of anabolic steroids did not have any significant effect on healing muscles injured with a drop-mass technique, while corticosteroids showed improvement in the short term but caused irreversible damage in the long term.
Another study by Dr. Elizabeth McNally, the Elizabeth J. Ward Professor of Genetic Medicine at Northwestern University Feinberg School of Medicine, found that weekly doses of glucocorticoid steroids, such as prednisone, helped speed recovery in muscle injuries in mice. The steroids also repaired muscles damaged by muscular dystrophy. However, it is important to note that when given daily over long periods, prednisone can cause muscle wasting. The findings suggest that the use of steroids may have benefits in aiding the healing of severe muscle injuries, but more research is needed to fully understand their effects.
Furthermore, a study by Papaspiliopoulos et al. in 2010 found that anabolic steroids may have an ethical clinical application in aiding the healing of severe muscle contusion injuries. Their research, conducted on rabbits, showed that local use of nandrolone decanoate improved rotator cuff repair. This provides further evidence that anabolic steroids may have potential benefits in muscle injury treatment, but more research is warranted to fully understand their effects and any potential side effects.
While these studies suggest that anabolic steroids may aid in muscle healing, it is important to note that they are considered renegade drugs and can have side effects. Therefore, further research is necessary to fully understand the potential benefits and risks associated with their use in muscle injury treatment.
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Corticosteroids may be beneficial in the short term
Corticosteroids, also known as glucocorticoids or simply steroids, are prescription medications that reduce inflammation in the body. They are synthetic drugs similar to cortisol, a hormone naturally produced by the body. Corticosteroids are used to treat a variety of health conditions, especially autoimmune diseases like lupus or vasculitis. They can be administered through injection, skin cream, or oral medication.
In the context of muscle tears or contusion injuries, corticosteroids may offer short-term benefits. A study by John M. Beiner et al. in 1999 found that a corticosteroid called methylprednisolone acetate (25 mg/kg) showed significant improvement in twitch and tetanic strength compared to controls at day 2. However, by day 7, the corticosteroid-treated muscles were significantly weaker than the controls, and by day 14, these muscles were totally degenerated with disorganized muscle fiber architecture.
Another study in mice with muscle injuries found that two weekly doses of steroids after the injury resulted in better treadmill performance and stronger muscles compared to placebo-treated mice. This suggests that less frequent, higher doses of steroids may be more beneficial than daily doses for promoting muscle repair and strength.
While corticosteroids may provide initial improvements in muscle strength, their long-term use can lead to irreversible damage to healing muscles. The Beiner et al. study observed disordered fiber structure and a marked diminution in force-generating capacity after prolonged use. Therefore, while corticosteroids may have short-term benefits, they should be used cautiously and under medical supervision due to their potential side effects and long-term consequences.
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Steroids can cause irreversible damage to healing muscles in the long term
While steroids can be beneficial in healing muscle tears, they can also cause irreversible damage to healing muscles in the long term.
A study by John M. Beiner et al. investigated the effects of anabolic steroids and corticosteroids on the healing of muscle contusion injuries. The study found that while corticosteroids showed significant improvement in twitch and tetanic strength in the initial days, the effect was reversed by day 7, with the corticosteroid muscles being significantly weaker than the control muscles. By day 14, the corticosteroid muscles were totally degenerated, with disorganized muscle fiber architecture. This indicates that while corticosteroids may be beneficial in the short term, they can cause irreversible damage to healing muscles in the long term, including disordered fiber structure and a marked diminution in force-generating capacity.
Another study by Papaspiliopoulos et al. in 2010 also found that anabolic steroids may aid in the healing of muscle contusion injuries by speeding up the recovery of force-generating capacity. However, it is important to note that anabolic steroids are considered renegade drugs, and their use in muscle injury treatment warrants further research.
Additionally, a Northwestern Medicine study found that weekly doses of glucocorticoid steroids, such as prednisone, can help speed recovery in muscle injuries and repair muscles damaged by muscular dystrophy. However, when given daily over long periods, prednisone can cause muscle wasting and weakness. Obese mice that received prednisone once a week showed improved exercise endurance, increased lean body mass, and weight loss.
While steroids may have potential benefits in muscle healing, it is crucial to consider the potential risks of long-term use, especially the possibility of irreversible damage to healing muscles. Further research is necessary to fully understand the complex effects of steroids on muscle recovery and to develop safe and effective treatment protocols.
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Weekly steroids strengthen and repair muscles
While steroids have been shown to strengthen and repair muscles, they are considered renegade drugs and are associated with several side effects. Anabolic steroids, for instance, have been studied for their effects on healing muscle injuries. In one study, the impact of an anabolic steroid (nandrolone decanoate, 20 mg/kg) and a corticosteroid (methylprednisolone acetate, 25 mg/kg) on injured muscles was examined. The results indicated that while corticosteroids may offer short-term benefits, they cause irreversible damage to healing muscles in the long term, including a diminution in force-generating capacity.
On the other hand, anabolic steroids may aid in the healing of muscle injuries and speed up the recovery of force-generating capacity. However, they, too, are considered controversial drugs, and their use in treating muscle injuries requires further research.
A 2017 study published in the Journal of Clinical Investigation by Northwestern University reported that weekly doses of glucocorticoid steroids, such as prednisone, can help speed up recovery from muscle injuries. This finding contradicts the common notion that steroids cause muscle wasting and weakness when taken long-term. The study was conducted on mice, and the researchers noted that the weekly doses promoted muscle repair and improved muscle performance.
In the study, normal mice with a muscle injury received steroids just before injury and for two weeks after the injury. Mice receiving two weekly doses of steroids after the injury performed better on treadmill testing and had stronger muscles than those receiving a placebo. Interestingly, mice that received daily steroids for two weeks after the muscle injury performed poorly on the treadmill and in muscle strength studies compared to the placebo group.
The lead investigator of the study, Dr. Elizabeth McNally, emphasized that while they don't yet have human data, the findings suggest alternative methods of administering a commonly used drug in a way that helps, rather than harms, muscle repair. The study also showed that prednisone directs the production of annexins, proteins that stimulate muscle healing. Furthermore, weekly doses of prednisone stimulated a molecule called KLF15, which is associated with improved muscle performance, while daily doses reduced KLF15, leading to muscle wasting.
In conclusion, while steroids have been shown to strengthen and repair muscles, the specific type of steroid, dosage, and timing of administration are crucial factors to consider. Anabolic steroids may offer benefits in healing muscle injuries, but more research is needed to fully understand their effects. Weekly doses of glucocorticoid steroids, such as prednisone, have been shown to promote muscle repair and improve muscle performance in mice, but human studies are yet to be conducted. As always, it is important to consult with a medical professional before taking any steroids or performance-enhancing drugs.
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Steroids can be used in the non-operative treatment of muscle tears
A 1999 study by Beiner et al. investigated the effects of anabolic steroids and corticosteroids on healing muscle contusion injuries. The study found that while corticosteroids showed initial improvement, they caused irreversible damage to healing muscles in the long term, including disordered fiber structure and reduced force-generating capacity. On the other hand, anabolic steroids showed potential in aiding the healing of muscle contusion injuries and speeding up the recovery of force-generating capacity.
Another study by McNally and colleagues in 2017 used high-resolution imaging to observe the muscle's ability to repair itself. They found that weekly doses of glucocorticoid steroids, such as prednisone, helped speed up recovery from muscle injuries and repaired muscles damaged by muscular dystrophy. The study was conducted on mice, but the findings suggested potential implications for humans. It is important to note that daily doses of prednisone can cause muscle wasting and weakness, which is a common problem for people taking steroids for chronic conditions.
While the use of anabolic steroids may have potential benefits in the non-operative treatment of muscle tears, it is important to consider the potential side effects and risks associated with their use. Further research is warranted to fully understand the effectiveness and safety of using steroids in muscle injury treatment.
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Frequently asked questions
Animal studies have shown that steroids may help heal muscle tears and contusions. However, these studies have shown that steroids can cause irreversible damage to healing muscle in the long term, including disordered fiber structure and a marked diminution in force-generating capacity.
Anabolic steroids and corticosteroids are the types of steroids that have been studied for their effects on healing muscle tears and contusions.
Anabolic steroids may aid in the healing of muscle contusion injuries and speed up the recovery of force-generating capacity.
Corticosteroids may be beneficial in the short term, but they cause irreversible damage to healing muscles in the long term.
Yes, there are non-operative treatments for muscle injuries, such as rest, ice, compression, and elevation therapy. However, there is a limited amount of evidence-based data, and most therapeutic approaches are based on "best practice".
