Muscle Strains in Dogs: The Benefits of Red Light Therapy

Muscle strains are one of the most common soft tissue injuries we see in pets. Muscle strains in dogs occur when muscle fibers stretch or tear beyond their normal threshold, and these are called soft tissue injuries. Whether from overexertion, slips and falls, intense exercise, or unexpected trauma, a strained muscle can sideline even the most active pup or agile cat. Symptoms of a dog’s strain include the following signs: limping, pain vocalizations, abnormal gait, stiffness, and reluctance to jump. Dogs with muscle strains may also show behavioral changes such as lethargy, depression, and decreased appetite. Early detection and prompt care are key to a successful recovery.

Active dogs, active breeds, overweight dogs, and aging pets (as dogs age) are at higher risk for muscle strains due to joint stress or reduced muscle elasticity. Overweight dogs that jump off furniture or suddenly have rare bouts of high activity put more strain on their joints, increasing the risk of injury. Many dogs experience these injuries, especially those with inconsistent activity levels. Dogs that are overweight or out of shape are more prone to muscle strains, and dogs that are relatively sedentary throughout the week and then go for long treks or intense exercise on the weekend—often called weekend warriors—are especially susceptible to injury. Consistent daily activity is better than bursts of exercise once or twice a week to prevent injuries in dogs.

It’s important to understand the difference between sprains and strains in dogs: a sprain is a stretch or tear in a ligament, while a strain is an injury to a muscle or tendon. Sprains are caused by twisting a joint the wrong way, while strains are often caused by overuse or excessive force on a muscle or tendon. Both sprains and strains are considered soft tissue injuries that do not affect bones. Sprains involve tears to the ligaments that connect different bones, while strains involve tears in muscles or tendons. Strains in dogs can vary in severity and are classified into three grades: Grade I muscle strains involve minor swelling and pain that typically resolves on its own; Grade II muscle strains may cause noticeable limping and more severe swelling and bruising; Grade III muscle strains result in severe pain and inability to use the injured limb, requiring immediate veterinary action. Moderate strains may require veterinary assessment, medication, and physical therapy for optimal recovery.

Veterinary consultation is necessary for an accurate diagnosis of muscle strains, as signs can mimic other serious issues. Dog owners and pet parents should consult a veterinarian if a dog is limping for more than 24–48 hours or shows severe pain. Most minor muscle strains in dogs require about two to six weeks for full recovery. Recovery from muscle strains in dogs typically involves 2-4 weeks of strict rest before returning to normal comfort and mobility. Most mild muscle strains improve within one to two weeks with rest and supportive care, while severe muscle strains or tears may take several weeks and require veterinary supervision. In some cases, severe injuries may require surgery, especially if there are ligament tears or joint involvement. Muscle strains can heal in a matter of weeks to several months depending on severity.

At home care is crucial: limit your dog’s activity during recovery to prevent further injury, use a leash for all outdoor time, and apply cold compress therapy to reduce inflammation and provide pain relief during the first two days after a muscle strain. Physical therapy and hydrotherapy may be recommended following a period of rest to aid in recovery. Keep a close eye on your dog during recovery to prevent them from overdoing it, and if your dog is not improving after a few days of rest, it is important to consult a veterinarian. NSAIDs and compression bandages can be prescribed as supportive treatments. Veterinary assessment is essential for determining the severity of a muscle strain in dogs. For athletic or working dogs, such as those participating in dog shows, advanced care from sports medicine specialists may be recommended to ensure optimal recovery and prevent future injuries.

Preventing muscle strains in dogs involves consistent fitness, warming up before intense play, ensuring adequate rest, proper preparation and gradual conditioning, weight management, maintaining a healthy weight, regular low-impact conditioning, supervision during play (especially for puppies and when dogs are around larger dogs), using traction on slippery floors, warm-up and cool-down routines, and avoiding high-impact jumping. A warm-up routine for dogs should never start with intense exercise, and should include gentle lead walking or jogging to increase blood flow. Proper preparation and gradual conditioning are the most effective ways to prevent muscle strains in dogs during exercise. Creating a dog safe environment with these tips and guidelines helps keep your pet protected from injuries and supports their overall well-being. Dog owners and pet parents play a vital role in monitoring, supporting, and providing at-home care for their dogs’ muscle health and recovery.

But what if there was a way to support the healing process from the inside out—without drugs or invasive treatment?

That’s where red light therapy, or photobiomodulation (PBM), comes in. Specifically, the Luma device uses two clinically supported wavelengths—635 nm red light and 850 nm near-infrared light—to promote faster recovery, reduce pain, and get your pet back on their paws.

Causes and Symptoms of Muscle Strains in Dogs

Muscle strains in dogs are a frequent type of soft tissue injury, often resulting from everyday activities that put sudden or excessive stress on certain muscles. Common causes include overexertion during play, sudden bursts of running or jumping, slips on slick surfaces, falls, or repetitive overuse—especially in active breeds or dogs that enjoy intense outdoor time. Even a quick dash after a squirrel or an enthusiastic leap at the dog park can lead to a strained muscle.

Dog owners should be vigilant for the signs of muscle strains, as early recognition is key to preventing further injury and promoting healing. Typical symptoms include limping, stiffness, and a reluctance to jump or climb stairs. You may notice swelling or tenderness in the injured area, and your dog might favor the affected leg or avoid putting weight on it altogether. In more severe cases, dogs can experience significant pain, difficulty walking, or even refuse to bear weight on the injured limb. Some dogs may also become less active, seem withdrawn, or show changes in appetite due to discomfort.

If you observe any of these symptoms—especially if your dog is in pain or unable to use the affected leg—it’s important to seek veterinary attention promptly. Addressing muscle strains early helps prevent complications and supports a faster, more complete recovery.

---

Diagnosing a Strained Muscle

When it comes to muscle strains and other soft tissue injuries in dogs, an accurate diagnosis is the first step toward effective treatment and a speedy recovery. Veterinarians rely on a combination of a thorough physical exam, a detailed medical history, and diagnostic tools to pinpoint the source of your dog’s pain and assess the extent of the injury.

During the physical exam, your vet will carefully palpate the affected area, checking for tenderness, swelling, or warmth that might indicate a strained muscle. They’ll also observe your dog’s gait and movement, looking for signs like limping, reluctance to bear weight, or changes in normal activity. Veterinarians specifically evaluate your dog’s joints using range-of-motion tests and may use imaging techniques to identify injuries such as ligament tears or joint damage. Clinical evaluation of your dog’s leg includes assessing for soft-tissue injuries, and your vet may recommend diagnostic techniques like X-rays or ultrasound to get a clearer picture. Sharing details about your dog’s recent exercise, any intense play, or sudden bursts of activity—like chasing balls at the dog park—can help your vet identify potential causes and risk factors, such as underlying joint issues like hip dysplasia.

To rule out other injuries, such as ligament tears or joint injuries, your veterinarian may recommend X-rays or ultrasound. In more complex cases, advanced imaging like MRI or CT scans can provide a clearer picture of the soft tissue and help guide treatment decisions. This proper assessment is especially important for athletic dogs or those involved in canine sports, as they are more prone to muscle injuries and may require a tailored recovery plan.

Once a strained muscle is confirmed, most dogs respond well to conservative management, including strict rest, anti-inflammatory medication, and physical therapy. Treatment strategies for your dog’s leg may also include muscle relaxants, such as methocarbamol, which can be prescribed to help manage pain and facilitate recovery, often alongside other therapies like laser treatment or acupuncture. For severe strains or when chronic pain is present, your vet might suggest advanced therapies such as laser therapy or sessions on an underwater treadmill to promote healing and restore normal mobility. Throughout recovery, it’s crucial to follow your vet’s recommendations to prevent further injury and support your dog’s joint health. If surgery is required for severe injuries like a torn CCL, keep in mind that recovery may take about 8-12 weeks.

Prevention is just as important as treatment. Pet owners can help reduce the risk of muscle strains by maintaining their dog at a healthy weight, providing regular but controlled exercise, and avoiding rough play or strenuous activity that could lead to pulled muscles or muscle tears. Creating a safe environment—free from slippery floors or uneven surfaces—also helps protect your dog’s legs and joints from unnecessary stress.

By staying proactive about your dog’s health, scheduling regular check-ups, and working closely with your veterinarian, you can help your pet avoid soft tissue injuries and enjoy a lifetime of active, pain-free adventures. Whether your dog is a weekend warrior or a canine sports enthusiast, a thoughtful approach to exercise and injury prevention will keep them moving comfortably for years to come.

At Home Care for Dogs with Muscle Strains

Caring for a dog with a muscle strain at home centers on creating a safe, supportive environment that encourages healing and minimizes the risk of re-injury. The most important step is to provide strict rest, restricting your dog’s exercise and activity to allow the injured muscle time to recover. Use a leash for all outdoor trips and avoid letting your dog run, jump, or play until your veterinarian gives the all-clear.

Applying a cold compress to the injured leg during the first 48 hours can help reduce swelling and pain. Your veterinarian may prescribe anti-inflammatory medication to further manage discomfort and inflammation. Gentle physical therapy techniques, such as light massage or carefully guided stretching, can promote healing and help prevent the formation of excess scar tissue—always follow your vet’s instructions before starting any therapy.

To make daily life easier for your recovering dog, consider using ramps or pet stairs to help them access beds or couches without straining the injured leg. Keep your dog’s living area free of obstacles and slippery surfaces to prevent accidental slips. Consistent at home care, combined with regular check-ins with your veterinarian, will help your dog heal safely and return to normal activity as soon as possible.

---

Preventing Muscle Strains in Dogs

Preventing muscle strains in dogs starts with a proactive approach to exercise, training, and overall care. Dog owners can reduce the risk of soft tissue injuries by providing regular, moderate exercise that keeps muscles strong and flexible, while avoiding sudden, intense play or strenuous activity that can overload the muscles. Maintaining a healthy weight is crucial, as excess pounds put additional strain on your dog’s muscles and joints, increasing the likelihood of strains in dogs.

Creating a safe environment is equally important—remove hazards that could cause slips or falls, and supervise your dog during play, especially with other dogs or in unfamiliar settings. Supporting joint health with appropriate supplements or a balanced diet can also help keep your dog’s muscles and joints resilient. Regular veterinary check-ups allow for early detection of potential issues and provide an opportunity to discuss strategies for preventing muscle strains and other soft tissue injuries.

By staying attentive to your dog’s needs and making thoughtful choices about their activity and environment, you can help ensure they stay active, healthy, and injury-free.

---

The Role of Veterinary Medicine in Muscle Strain Recovery

Veterinary medicine is essential for guiding dogs through the recovery process after a muscle strain. A veterinarian will perform a proper assessment, often starting with a physical exam and, if needed, advanced imaging such as X-rays or ultrasound to accurately diagnose the injury and rule out more serious conditions. Based on the severity of the muscle strain, your vet may recommend a tailored treatment plan that could include anti-inflammatory medication to manage pain and swelling, as well as physical therapy to restore strength and flexibility.

In some cases, especially with severe strains or when chronic pain is present, additional therapies such as laser therapy, acupuncture, or sessions on an underwater treadmill may be suggested to promote healing and improve mobility. Your veterinarian will also provide guidance on at home care, including exercise restriction, the use of cold compresses, and safe administration of any prescribed medications.

Regular follow-up appointments are important to monitor your dog’s progress, adjust the treatment plan as needed, and prevent further injury or the development of chronic pain. By working closely with your veterinarian and following their recommendations, dog owners can help ensure a smooth recovery and support their dog’s long-term muscle and joint health.

🔬 How Red and Near-Infrared Light Heals Muscle Strains

Photobiomodulation works by delivering light energy into the tissues, where it’s absorbed by mitochondria—the “powerhouses” of the cell. The result? A biological cascade that accelerates the repair of injured tissue. PBM may also help manage scar tissue formation after muscle injuries, supporting better joint health and mobility.

✅ Stimulates ATP Production

When red and infrared light photons hit the cells, they’re absorbed by cytochrome c oxidase, a key enzyme in mitochondrial respiration. This increases the production of adenosine triphosphate (ATP)—the energy source needed for healing and regeneration of muscle fibers (Hamblin, 2016). More ATP = faster recovery.

✅ Reduces Inflammation

Inflammation is a natural part of the healing process, but it can linger and cause prolonged pain and swelling. Red light therapy has been shown to reduce pro-inflammatory cytokines and oxidative stress, creating a more favorable environment for muscle repair (Anders et al., 2014); (Hamblin, 2017).

✅ Increases Circulation and Oxygenation

The 635 nm red light stimulates microcirculation, bringing oxygen and nutrients to the injured muscle while clearing out cellular waste. Meanwhile, the 850 nm near-infrared light penetrates deeper into muscle tissue to reach the root of the strain, supporting tissue-level oxygenation and repair (Leal-Junior et al., 2009).

✅ Enhances Muscle Regeneration

PBM has been shown to promote the proliferation of satellite cells—muscle stem cells that are crucial for regeneration. It also supports collagen synthesis, helping to rebuild the muscle structure after injury (Rodrigues et al., 2020).

✅ Decreases Muscle Soreness and Damage

Multiple studies show that PBM can reduce creatine kinase (CK)—a marker of muscle damage—after exercise or injury. It may also reduce soreness and fatigue by mitigating oxidative stress (Vanin et al., 2018).

---

🧪 Prove It

A deep dive into the literature shows strong support for red and infrared light therapy in soft tissue healing:

• 635 nm red light has been shown to reduce post-exercise soreness and improve microcirculation (Leal-Junior et al., 2009).
• 850 nm near-infrared light penetrates deeper into tissues, supporting repair in muscle fibers and connective tissue (Vanin et al., 2018).
• Studies demonstrate faster recovery, less inflammation, and lower CK levels after PBM treatment (Ferraresi et al., 2015);
• In animal models, PBM enhanced muscle regeneration and improved functional outcomes after strain injury (Rodrigues et al., 2020).

---

🚀 Conclusion: Red Light Therapy = Less Pain, More Play

When your pet has a muscle strain, time matters. Red light therapy with the MedcoVet Luma gives you a non-invasive way to support healing at the cellular level—so your pet can get back to doing what they love.

By boosting energy production, reducing inflammation, and enhancing muscle regeneration, the Luma is more than just light—it’s a powerful recovery tool.

---

🧾 Citation Summary

Study	Key Finding
Hamblin (2016)	PBM stimulates ATP production and reduces inflammation
Anders et al. (2014)	Red and NIR light modulate oxidative stress and cytokines
Leal-Junior et al. (2009)	635 nm LED improves blood flow and reduces soreness
Rodrigues et al. (2020)	PBM promotes muscle regeneration and collagen synthesis
de Oliveira et al. (2018)	PBM reduced creatine kinase and inflammatory markers after muscle damage in rats
Padoin et al. (2022)	LED PBM reduced creatine kinase increases after exercise in humans
Ramos et al. (2018)	PBM lowered inflammatory markers and edema in muscle strain models
Vanin et al. (2018)	NIR light improves muscle recovery and reduces fatigue
Ferraresi et al. (2015)	PBM before exercise enhances performance and recovery