Thank-you for purchasing the Treadwell® System with patented Treadwell® technology for improved user outcomes in health and wellness. The TREDLR™ is engineered for reliability and precision movement for millions of repetitions of use and years of maintenance free operations. Please contact us with any problems you might encounter during use of the device.

Download the manual in PDF format.



The TREDLR™ needs to be placed on a level surface. The user is recommended to be seated in an ergonomically correct chair, without wheels, facing the device. The user should be positioned far enough from the device to bring the knees to a position no higher than the hips when the feet are placed on the treadle platform. The feet (or foot) are positioned 2-3 inches forward of the lower edge of the pedal (ankle joint(s) aligned with side posts of device and on top of an imaginary line drawn across the platorm between the side attachment points). This usually results in part of the forefoot (toes) extending beyond the tredal platform. Although this may appear to be an incorrect position at first, it is the correct positioning. This position allows for the smoothest operation with the least knee and leg motion during use.  Exceptions to this positioning are included in our training programs.


Optimally the users’ feet remain on the tredal during excursion. Should the heel of the users foot lift from the tredal during the toe up (dorsiflexion) phase, or should the user complain of discomfort or tightness in the back (posterior) portion of the lower leg or the heel/Achilles tendon area, increase the distance between the device and the user. Lifting of the front of the foot during the down (plantarflexion) phase, or complaints of pain/discomfort in the front (anterior) portion of the lower leg or top of the foot calls for a decrease in the distance between the device and the user.

The excursion of the TREDLR™ tredle platform in degrees is approx 24 degrees, which is significantly less than normal ankle range of motion. Should the user not have enough range of motion to accomplish keeping the feet in contact with the tredal during use, use of the TREDLR™ may loosen the ankle sufficiently. This would dictate several shorter sessions of use initially, and may be augmented by passive stretching of the ankle(s) to achieve desired range of motion. In the event that only one ankle exhibits limited range, the device may be used one foot at a time and will be effective.

Beginning Use

Initial motion is achieved by the user putting gentle downward pressure on the heels of the feet to start the desired heel-toe, heel-toe motion. The feet should be resting on the tredle platform without pushing force of the feet onto the platform. Once motion has begun, an alternate heel-toe, heel-toe rocking motion will continue the tredle platform movement with very little additional effort on the part of the user. The feet should be using the treadle platform with very light pressure on the soles of the feet while engaging in the toe-heel, toe-heel rocking motion.

At this point the user seeks to achieve a steady rhythm. Although most users rapidly establish a comfortable rhythm, some may require more than one use to achieve the desired rhythm. Several tredling sessions of about five minutes generally achieve the goal of a comfortable rhythm for these users. The rhythm goal is between 60 and 160 heel-toe excursions per minute. This can be checked by counting the heel-toe excursions for ten seconds and then multiplying the counted excursions by six.

For more challenged individuals a therapist may need to take a position beside the user and place one foot on the tredal beside the feet of the client, providing the tredle motion until the user is able to maintain the desired heel-toe, heel-toe motion on their own.

Rate of Tredling

The desired rate usually falls between 60-160 heel-toe excursions per minute. A rate of below 60 per minute may not capture desired momentum, making use of the methodology less effective. A rate of greater than 160/min may not allow adequate filling time of the veins that the calf pump mechanism is squeezing between excursions.


Generally, a rate of 10-26 excursions for a 10-second interval falls within a normal operational range.

Normal time of use would be 8-30 min per session dpending on the symptom, disease or condition being improved. Fifteen minutes generally produces 1200-1800 cycles (calf pumps per leg). Shorter or longer times may be more applicable for some users.

Frequency of use is safe for two or more uses per day. Daily sessions result in less time to achieve desired outcomes and induce no harm.

Special Considerations

Although infrequent, some users do report muscle soreness after initial device use, particularly if they have been very inactive. This should rapidly disappear with continued use, but may warrant more limited time of use for the first several sessions.

There have also been users who have venous insufficiency or blockage that causes the onset of discomfort after several minutes of use. These users should be advised to limit use the TREDLR™ for periods no longer than when the discomfort occurs.  More frequent sessions of shorter duration determined by their comfort level will achieve the outcomes of fewer sessions of longer duration.


As with the use of any device, unusual discomfort or pain would indicate that cessation of use and consult with your physician would be advisable.

Treadwell Corporation

Members of :

First Flight Venture Center

RTP, NC 27709

Union River Center for Innovation

Ellsworth, ME 04605


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© 2018 by

Treadwell Corporation