The Sports Physical Therapy Podcast:
Working with Runners and Endurance Athletes with Chris Johnson

12 Jan-2023

Chris Johnson is a physical therapist that specializes in the care of endurance runners and endurance athletes. Mike Reinold is a physical therapist, athletic trainer, and strength and conditioning coach specializing in helping people feel, move and perform better. Listen to this podcast interview with Chris and Mike where they address key issues when working with runners and endurance athletes via this link. Here are some of the topics they cover in the episode:

Why you should establish yourself as the go-to running resource and specialist in your area:

  • There’s big potential: There are just so many people interested in running and endurance sports, and for a physical therapist is just such a great niche to get into.
  • There’s a need: People are hellbent on getting back to running after an injury as it can affect their general well-being. So if you can be established as the go-to resource in your area, you will never be out of work. 
  • Post pandemic effects: Chris mentions that since the pandemic he sees a wave of bone stress injuries in the gen pop (general population), compared to the pros who have more tendon-related disorders. He uses a great analogy that they’re pushing the needle so much it’s just so easy to tip the scales. He discusses how you need to treat injuries very differently as tendons warm up, and bones don’t.
  •  Running gait analysis adds value: “How much time as a physio do you spend working on mechanics?” asked Mike.  Chris explains how he generally puts everyone on the treadmill and watches everyone run. He sees that elite runners often have their “running signatures engraved” and don’t try to change too much.  For most runners in the gen pop, he does a qualitative assessment, using what he dubbed the S’s of treadmill analysis:
    1. strike
    2. sound
    3. step rate
    4. speed
    5. surface
    6. slope.
    7. shank (lower leg angle), and
    8. step width

Chris combines his qualitative assessments with the objective metrics from Runeasi. According to Chris: “I will look at forces and I’ll use something called this Runeasi device, e a s i. And that gives you some interesting metrics. It gives you a symmetry score, it gives you mediolateral stability, and an impact score. Just because we can’t see forces—the best coaches and clinicians—have an idea—but we can’t quantify the forces.” Are you a runner who is worried about pain or that needs advice? We recommend you check out the Runwell platform of Chris Johnson. 


1. Global movement quality

Track and improve your client’s Runeasi running quality. Identify their weakest link with our advanced visualisation.

2. individual recommendations

Get individual training and cueing recommendations to improve your client’s weakest link.

3. Real-time feedback


4. Session trends

Learn more about your client’s running quality during daily training. Our session trends show when and where the quality drops with fatigue.

5. Quick comparisons

Compare pre-post data to show intervention effects on the movement quality. 


1. No motion artifacts. The Runeasi belt is secured tightly against the body and the skin to capture the actual movements of the body’s center of mass. Attaching or clipping the sensor directly to the pants would allow the sensor to wobble from side to side (i.e., measuring the wobbling of the pants, and not the human body.

2.  Easy to standardize the sensor’s positioning. The Runeasi belt makes it easy to consistently position the sensor close to the center of mass. Attaching the sensor directly to the pants would dramatically affect the reliability of the outputs as the height and tightness of the pants will affect the results. Moreover, these pants attachments often shift sideways while running which further decreases the data quality. 

 3. Comfortable to wear.  Hundreds of runners confirmed that they immediately forget about our belt while running. This allows them to move without any restrictions and allows us to capture movements that are representative of a client’s true biomechanics.



Accurately captures full range of motion and kinetic parameters by leveraging wide sensing range (16 Gs) & high sampling frequency (1000 Hz)


Built to withstand high intensity training and sweating. Suitable for the outdoor elements, come rain or shine. Robust to handle the repetitive and ruthless impact shocks of running.

Lightweight & SLIM

Seamlessly integrates onto the body to support movement without restrictions. Weight: 9.4g/0.33oz with battery. Dimensions (36.6mm/1.44” dia. X 10.6mm/ 0.42” thick)

No charging wireless

Replaceable coin-cell battery with operating time up to months, depending on the usage. Bluetooth® 5.0 radio for effortlessly transmitting data real-time or post-session.