APTA Conference Anaheim 2026
Thanks for visiting MR EMG at APTA 2026.
We hope you had an opportunity to say hello and see a demonstration of MR EMG.
MR EMG is explicitly designed for clinical applications. With four sensors, you can test agonist/antagonist muscle groups and compare muscle outputs on the left and right sides of the body. Review the impact of pain on muscle function and screen a variety of exercises to see which movements work best for your patients. Our App enables you to build data files for each of your patients, recording their journey of injury recovery and progress. MR EMG is the ideal investigative tool when assessing patients with musculoskeletal pain.
Below you’ll find a selection of real surface EMG data files and clinical examples demonstrating how MR EMG can be used to assess muscle function, identify asymmetries, and track rehabilitation progress in clinical settings.
Click the icon to see the data in a web version of the MR EMG App.
Lumbar Fracture Example
This data file shows the initial assessment and rehabilitative journey of a patient's muscles following a lumbar fracture. This patient reported weakness in her right lumbar and thoracic extensors. On file layer 2, you can see the significant difference in the muscle amplitudes of her lumbar extensors, highlighting the weakness she was feeling. Using MR EMG, her spinal muscles were tested regularly, leading to complete recovery after 13 weeks of guided rehabilitation.
Hennemen's Size Principle of Motor Unit Recruitment
This data file shows how the EMG signal amplitude reflects Heneman's size principle. When you increase the load on a muscle, it has to work harder to overcome that load. Increased effort leads to greater activation of motor units, causing more muscle fibres to contract. As a result, the surface EMG signal shows greater amplitude as more muscle fibres are recruited and fire simultaneously to allow the muscle to work harder.
Biceps Fatigue Example
This data file shows the increase in muscle activation as fatigue occurs under load.
Layer 1 of the data file displays the signal amplitudes measured in signal volume, amplitude x time.
Affect of Knee Pain on Quadriceps Function
This data file shows the loss of right quadriceps function following a knee injury. You will see normal muscle amplitudes during leg extensions; however, they are lost during squats and single-leg presses. MR EMG is useful for screening patients' muscle activation while performing a variety of tasks. At the end of the data file you will see the return of the quadriceps muscle function post rehabilitation.
Denervation from Lumbar Nerve Root Compression
This data file shows a 60-year-old patient with an L5/S1 nerve root injury causing muscle denervation. Over eight months of rehabilitation using MR EMG, you can see the function of the impacted muscles returning. This is objective data that provides both the patient and the clinician with confidence that symptoms are improving.
Full body clinical screening
Data file showing whole body clinical screening using MR EMG. The data in this file show high levels of muscle activation. Using MR EMG in this manner, you can quickly and efficiently test the function and activation levels of most major muscle groups. This is very useful for assessing patients with long-term musculoskeletal pain.xxx
Strength and Conditioning Example
This data file shows MR EMG applications within the strength and conditioning space
Hyperactive Upper Trapezius Muscles
An example showing the presence of upper trapezius muscle hyperactivity in a 67-year-old patient with a long history of spinal pain. Using EMG biofeedback, we coached this patient on walking, engaging his lats to reduce hyperactivity in the upper trapezius muscles.
Healthy lower back versus injured lower back spinal muscle function
This data file shows how long-term back pain affects the signal amplitude of the lumbar extensor muscles. It is known that patients with long-term back pain lose the contraction capacity of the spinal erectors. In this data file, I compare the EMG signal amplitudes of a patient with a long history of back pain to those of an individual who has never had back pain. The difference in lumbar extensor function is significant. You will also observe that during simple bracing tasks, the patient's spinal erectors with long-term back pain work much harder.
MR EMG is a valuable tool to measure the spinal muscle function of your patients, enhancing exercise prescription and pain management.
Stroke patient
This data file demonstrates how MR EMG can provide an objective measure of muscle function in a stroke patient. This patient was referred to the Community Rehabilitation Centre team, following a Right MCA infarct on 10/3/25 with clot retrieval. This subject has given their written permission for their data to be shared.
When you view this data file, you will observe a loss of neural drive affecting the left bicep and tricep muscles. Through focused, guided rehabilitation, you will observe the return of their muscles' neural drive and strength. MR EMG is the perfect device and software to capture these patient improvements in lost muscle function.
You will observe how MR EMG was used to screen several of this patient's muscles, providing guidance on which muscles had been affected by their stroke and offering clarity and comfort for the patient.