PEMF Therapy and Knee Strength in Osteoarthritis: The 2026 Lau Trial
A 2026 placebo-controlled trial studied an eight-week course of PEMF in people with refractory mild-to-moderate knee osteoarthritis and reported a later improvement in knee extension strength.
The Evidence in One Minute
Research type: Double-blind, randomised, placebo-controlled trial
Main finding: At six months, the PEMF group showed a statistically significant improvement in knee extension peak torque compared with sham. The paper reported a 72% increase from baseline versus 25% in the sham group.
Essential caution: This paper did not test the OlyLife P90 Plus.
What Did the Study Examine?
Original Research Source
A 2026 placebo-controlled trial studied an eight-week course of PEMF in people with refractory mild-to-moderate knee osteoarthritis and reported a later improvement in knee extension strength.
At six months, the PEMF group showed a statistically significant improvement in knee extension peak torque compared with sham. The paper reported a 72% increase from baseline versus 25% in the sham group.
What Does This Research Mean?
The most defensible conclusion is that the studied course may have helped knee extensor strength in this particular group. Strength, pain, cartilage and daily function are separate outcomes.
What it supports
PEMF deserves consideration within the specific research context.
What it does not prove
Not every PEMF device or programme produces the same result.
How to use it
Compare the exact research device, protocol and intended use.
Important Limitations
- No significant between-group differences were found for lean mass, cartilage thickness, joint-space width, walk time, chair stands or WOMAC.
- A strength outcome does not automatically mean less pain or restored cartilage.
- The result came from a specific research device and protocol.
- The trial does not establish equivalent results for a home consumer device.
How Does This Relate to the OlyLife P90 Plus?
The Lau trial cannot be used to prescribe a P90 Plus frequency, intensity or eight-week programme. Follow the exact manual and maintain appropriate knee osteoarthritis care.
OlyLife P90 Plus Tera Machine
The P90 Plus is marketed as a premium home wellness machine with PEMF-focused features, TeraHertz positioning, temperature control and a touch interface. It is not automatically equivalent to a device used in research.
How to Use This Evidence Responsibly
Read the source
Use the original paper rather than relying only on a marketing summary.
Confirm the diagnosis
Similar symptoms can have different causes and treatments.
Compare devices
Check exact output and intended use, not only a frequency label.
Track outcomes
Record benefits or adverse effects without changing prescribed care.
Continue Your PEMF Research
PEMF Therapy Benefits
Continue with this related PEMF guide for more context.
Choose the Right OlyLife Device
Continue with this related PEMF guide for more context.
OlyLife P90 Plus Review
Continue with this related PEMF guide for more context.
Questions About This Case Study
Did the study show improved knee pain?
Its main between-group finding was knee extension strength; WOMAC outcomes did not differ significantly.
Did PEMF rebuild cartilage?
No significant between-group difference was found for cartilage thickness or joint-space width.
Can this become a P90 Plus protocol?
No. The study used a specific research device and protocol.
Explore the Complete Research Library
Review all six evidence summaries, then continue to the safety, technology and device guides.