Concentrated photonic energy penetrates deep into tissue to accelerate cellular repair, reduce inflammation, and relieve pain at its source — without medication or surgery.
What It Is
Class IV high-power laser therapy (also called photobiomodulation) delivers concentrated wavelengths of light energy deep into injured tissue — far beyond what lower-class lasers can reach. At the cellular level, this light energy is absorbed by mitochondria, boosting ATP production and accelerating the body’s natural healing cascade.
The result is faster tissue repair, reduced inflammation, increased circulation, and significant pain relief. Unlike cold lasers, Class IV devices deliver enough power to treat deep structures including muscles, tendons, ligaments, joints, and even nerves — making them effective for a wide range of musculoskeletal conditions.
Related Reading
Chronic Pain Management: How Laser Therapy Fits In →How Class IV laser therapy integrates with physiotherapy and exercise rehabilitation for persistent pain conditions.
High Power vs Cold Laser
If you’ve heard of “cold laser” or “low-level laser therapy” (LLLT), it’s important to understand that a Class IV high-power laser is a fundamentally different tool. Cold lasers operate at very low wattages — typically between 0.05 and 0.5 watts. At that power level, the light energy barely penetrates past the surface of the skin. To deliver a meaningful therapeutic dose to deeper tissues, cold laser sessions need to run for 30–45 minutes — and even then, much of the energy never reaches the target structure.
A Class IV high-power laser, by contrast, operates at 10–15 watts or higher. That’s roughly 30–300 times more power than a cold laser. This means it can deliver the same photon energy in a fraction of the time, penetrating deep enough to reach muscles, tendons, ligaments, joint capsules, and nerves that cold lasers simply cannot access. The therapeutic dose that takes a cold laser 40 minutes to deliver can be achieved with a high-power laser in under 5 minutes.
This is why even a 5-minute session with the Class IV laser at Move to Motion is more than enough to deliver a full therapeutic dose. You’re not getting less treatment — you’re getting the same (or greater) amount of healing energy concentrated into a short, efficient session. Patients are often surprised that something so quick can produce such significant results, but the physics is straightforward: higher power means faster energy delivery to the cells that need it.
The Numbers
To put this in perspective: a typical therapeutic dose for a deep tissue condition is approximately 3,000–6,000 joules of energy. A cold laser at 0.5 watts delivers 30 joules per minute — meaning it would need 100–200 minutes to deliver a full dose. Our Class IV laser at 12 watts delivers 720 joules per minute. That’s a full therapeutic dose in roughly 4–8 minutes.
This isn’t just about convenience. Research shows that the biological response to laser therapy depends on achieving a sufficient energy density within the target tissue. Underdosing — which is the inherent limitation of cold lasers on deep structures — produces little to no clinical effect. The Class IV laser ensures the right dose reaches the right depth every time, which is why the clinical outcomes are consistently stronger.
At Move to Motion, we never cut corners on treatment quality. The high-power laser is one of the reasons our patients recover faster — because every minute of treatment counts, and 5 minutes of Class IV laser delivers more therapeutic energy than most people receive in an entire cold laser session elsewhere.
When It’s Used
Achilles tendinitis, rotator cuff tendinopathy, and patellar tendon pain respond well as laser accelerates collagen remodelling within the tendon.
Reduces synovial inflammation and stimulates cartilage cell activity in osteoarthritic knees, hips, hands, and spinal facet joints.
Speeds muscle fibre repair and reduces internal swelling after acute injuries, cutting recovery time significantly.
Penetrates the thick fascial band on the sole of the foot, reducing chronic inflammation and promoting tissue healing.
Stimulates nerve cell regeneration and reduces neuroinflammation in conditions like carpal tunnel, sciatica, and peripheral neuropathy.
Accelerates wound and incision healing, reduces scar tissue formation, and controls post-operative pain and swelling.
What To Expect
Treatment is painless and non-invasive. Your therapist will apply the laser handpiece directly over the treatment area, moving it slowly across the skin. You’ll feel a gentle, soothing warmth as the light energy penetrates into the tissue. Because the Class IV laser delivers energy so efficiently, sessions typically last just 5–12 minutes — even 5 minutes is more than enough to deliver a full therapeutic dose to the target area.
Most patients notice improvement within 3–5 sessions, with a typical treatment plan of 6–12 sessions. Laser therapy is often combined with manual therapy, exercise, and other modalities for optimal results.
Connect with us. No commitment — just a conversation.