Our Story

The Porterfield “Core Strengthening Device and Method” is designed to effectively and appropriately strengthen “mother natures’ corset (MNC)”

The PCSD a handheld exercise devise that produces appropriate resistance and movement that simultaneously contracts the muscles that connect into the Abdominal and Thoracolumbar fascia of the trunk (MNC).

I am a retired Physical Therapist of 40 years and co-author of 4 textbooks on functional anatomy, and we have virtually the entire body dissected out on videotape – Functional anatomy and biomechanics is our passion. We designed this device approx 25 years ago, and had a prototype made.

One our employees, who is a PTA, had two major abdominal surgeries in one month.  The patient and our rehab staff worked very hard with her to rehabilitate regain function of her trunk – “Mother Natures Corset”.  She had most all of the painful musculoskeletal overload symptoms associate with a weak dysfunction abdomen or core, that forced an increased in  medication. The effort to gain strength was slow, enough that we decided there must  be a better way.  To that end, we consulted with an engineer and together we created the PCSD.

We presented the devise and concept to a company in Canton, Ohio. After a month of dialogue and shooting “how to use” video, finally they decided that “Joe bagofdonuts” will not the relate the device and movement to Ab strength, which is furthest from the truth! At that time they thought  Joe… was the market.  The reality is that Joe is only a very small part of the market.  At the end of the month, they opted out.

So, we made another prototype and continued to utilize the resisted exercise device for years in our patient care. Successful pain management lead to therapeutic exercise and strengthening.  Using this device correctly is very effective, because of the movement and resistance simultaneous contracts 6 muscle groups of the trunk/core  – it’s easy to use, and  very effective i.e., receiving large benefit from little effort – Why, because the resistance and movement are specifically directed to those muscles groups that forms the core or MNC. We have testimony from the clinicians that incorporated this device into their clinical practice for over 20 years.

Approximately 3 year ago, a member of that original committee in Canton called me and encouraged me to resurrect the project – A provisional patent was written, the final engineering drawings have been approved and sent out for fabrication – We now have the second prototype and hope to have product by October, 2018. There is no question as to it’s effectiveness, and the value in strengthening the trunk.  A strong core stabilizes posture and improving activities of daily living.

The key to strength gain is consistent resisted muscular stimulus! The primary advantage of the PCSD is convenience.

Using this device, coupled efficient resisted movement, can be performed in standing, sitting, in a chair or a wheel chair, and/or performed in supine lying position to accommodate all conditions, body types, and strengths. The device is designed with 3, easily interchangeable springs of increasing resistance.

Other Descriptive Verbiage:

We would welcome the opportunity to present and illustrate the functional anatomy and biomechanics of the trunk / core, that describes “Mother Natures’ Corset” a abdominal musculofascial system.  This interconneceted system includes 6 muscle groups converge.  Plus, we can describe how anatomically, the back is connected to the front and the neck is connected to the legs (“Serape Effect”).  Strength training directly and positively affects our overall health and consistent stimulus from resistance exercise stabilizes the posture and minimizes skeletal overload and pain.  Strength gain improves all aspects of the activities of daily living, and is a basis for a long active life.

This concept is the primary focus of rehabilitation.

We say – want a flatter stomach with significantly more stability in the spine and posture, learn to perform this resisted movement, and be consistent – It’s easy to learn, convenient with variable resistance.  We had 2 in our clinic, and they were constantly in use by patients and staff.  The device and method has been an integral part of our rehab for the past 20+ years and we are now completing the patent and bringing “The Porterfield Core Strengthening Device” and Method to market.

Some say last year the bad word was smoking and this year it is sitting.  The market is huge and our initial focus is the rehab market, and phase two we will market to the performance assessment area.

The musculofascial interconnections of the trunk functions like constructing a circus tent. Pushing forces from within – the center post, and muscles that are contained within fascia, and multiple ropes (muscles) pulling in multiple directions, tightening and stabilizing the structure of our trunk / core.

Excellent for rehabilitation of spine surgery both cervical and lumbar.

This device is solidly founded on anatomical and biomechanical science, therefore the potential for product longevity and staying power exist. The  market is huge.

There is a first draft of the “how to use” video is available for review.

For a complete description of the anatomy and biomechanics of the trunk / core – go to YouTube and search musculofascial dynamics.  We are very pleased with the outcome.  It is a 34 minute 4 section presentation complete with the best exercises that accomplish that task.