PHX Strength uses MedX equipment, the most technologically advanced fitness, sports and medical/rehabilitation equipment available. MedX incorporated decades of experience and millions of dollars of independent, university-based research. MedX products achieve training efficiency through resistance curves matched to tested and proven strength profiles. They operate at a very low level of friction and offer a choice of resistance in 2-pound increments, ensuring a weight that is just right – not too heavy and not too light – for rapid and steady progress.
More than 75 peer-reviewed medical journal articles have been published to confirm that MedX’s proprietary technology can materially decrease chronic spine-related pain issues, restore spinal function, reduce or eliminate the need for ongoing care, and improve patients’ quality of life.
- One Lumbar Extension Training Session per Week Is Sufficient for Strength Gains and Reductions in Pain in Patients
with Chronic Low Back Pain Ergonomics Stewart Bruce-Low, Dave Smith, Scott Burnet, James Fisher, Gary Bissell, and Leonie Webster - The Clinical Effects of Intensive, Specific Exercise on Chronic Low-Back Pain: A Controlled Study of 895 Consecutive
Patients with One Year Follow-Up Brian W. Nelson, MD, Mike Hogan, PT, Elizabeth O’Reilly, RN, Joseph A. Wegner, MD, MPH, Mark Miller, PT, Charles Kelly, MD
Low Back Pain - Muscle – In Rehabilitation of the Spine: Science and Practice
Michael L. Pollock, PhD, James E. Graves, PhD, David M. Carpenter, MS, Daniel Foster, MS, Scott H. Leggett, MS, Michael N. Fulton, MD
Basic Science of Spine-Associated Tissues
Nonoperative Spine Care Centers Present New Ancillary Service, Quality Patient Care
Tina DiMarcantonio
Orthopedics Today - Lumbar Strengthening in Chronic Low Back Pain Patients
Sherry V. Risch, PhD, Nancy K. Norvell, PhD, Michael L. Pollock, PhD, Edward D. Risch, MD, Howard Langer, RPT, Michael Fulton, MD, James E. Graves, PhD, Scott H. Leggett, MS
Spine - A Preliminary Report on the Effect of Measured Strength Training in Adolescent Idiopathic Scoliosis
Vert Mooney, Jennifer Gulick, Robert Pozos
Journal of Spinal Disorders - A Rational Approach to the Treatment of Low Back Pain Brian W. Nelson, MD
The Journal of Musculoskeletal Medicine - Back in Shape
Michael L. Pollock, PhD, James E. Graves, PhD - Changes in Isometric Strength and Range of Motion of the Isolated Cervical Spine After Eight Weeks of Clinical Rehabilitation
Thomas R. Highland, MD, Thomas E. Dreisinger, PhD, Laura L. Vie, BeD, Garth S. Russell, MD
Spine - Comparison of Female Geriatric Lumbar Extension Strength
Bryon Holmes, Scott Leggett, Vert Mooney, Jean Nichols, Scott Negri, An Hoeyberghs
Journal of Spinal Disorders - Comparison of Two Restraint Systems for Pelvic Stabilization during Isometric Lumbar Extension Strength Testing
James E. Graves, PhD, Scott H. Leggett, MS, Cecily K. Fix, MS, Dan N. Foster, MS, Michael L. Pollock, PhD, David M. Carpenter, MS
JOSPT - Correlation Between the MRI Changes in the Lumbar Multifidus Muscles and Leg Pain
DF Kader, D. Wardlaw, FW Smith
Clinical Radiology - CT Imaging of Trunk Muscles in Chronic Low Back Pain Patients and Healthy Control Subjects
Lieven, A. Danneels, Guy G. Vanderstraeten, Dirk C. Cambier, Erik E. Witvrouw, Hugo J. De Cuyper
European Spine Journal - Differences in Electromyographic Activity in the Multifidus Muscle and the Iliocostalis Lumborum Between Healthy Subjects and Patients with Sub-Acute and Chronic Low Back Pain
LA Danneels, PL Coorevits, AM Cools, GG Vanderstraeten, DC Cambier, EE Witvrouw, HJ De Cuyper
European Spine Journal - Effect of 12 and 20 Weeks of Resistance Training on Lumbar Extension Torque Production
David M. Carpenter, Dan Foster, James E. Graves, Bryon Holmes, Michael L. Pollock, Michael N. Fulton, Scott H. Geggett
Basic Science of Spine-Associated Tissues - Effect of Focused Strength Training After Low Back Injury
V. Mooney, L. Matheson, D. Holmes, S. Leggett, J. Grant, S. Negri, B. Holmes - Effect of Reduced Training Frequency and Detraining on Lumbar Extension Strength
Jacqueline T. Tucci, MS, David M. Carpenter, MS, Michael L. Pollock, PhD, James E. Graves, PhD, Scott H. Leggett, MS
Spine - Effect of Resistance Training on Lumbar Extension Strength
Michael L. Pollock, PhD, Scott H. Leggett, MS, James E. Graves, PhD, Arthur Jones, Michael Fulton, MD, Joe Cirulli
The American Journal of Sports Medicine - Effect of Resistance Training Volume on Strength and Muscle Thickness
David B. Starkey, William F. Brechue, Michael L. Pollock, James E. Graves, Yoshi Ishida, Matthew S. Feigenbaum, Michael A. Welsch
Medicine & Science in Sports & Medicine - Effect of Training Frequency and Specificity on Isometric Lumbar Extension Strength
James E. Graves, PhD, Michael L. Pollock, PhD, Dan Foster, BS, Scott H. Leggett, MS, David M. Carpenter, MS, Rosemaria Vuoso, MS, Arthur Jones
Spine - Effects of Isolated Lumbar Extension Resistance Training on Bone Mineral Density of the Elderly
M.L. Pollock, FACSM, D. Lowenthal, L. Gazarella, M.N. Fulton, J.E. Graves, FACSM, D. Foster, D.M. Carpenter, J. Tucci, S.H. Leggett, R.R. Mananquil
American College of Sports Medicine - Effects of Pelvic Stabilization on Lumbar Muscle Activity During Dynamic Exercise
Jun G. San Juan, James A. Yaggie, Susan Levy, Vert Mooney, Brian Udermann, John M. Mayer
Journal of Strength and Conditioning Research - Effects of Three Different Training Modalities on the Cross Sectional Area of the Lumbar Multifidus
LA Danneels, GG Vanderstraeten, DC Cambier, EE Witvrouw, J Bourgois, W. Dankaerts, HJ De Cuyper
British Journal of Sports Medicine - Electromyographic Analysis of Four Techniques for Isometric Trunk Muscle Exercises
Osamu Shirado, MD, Toshikazu Ito, RPT, Kiyoshi Kaneda, MD, Thomas E. Strax, MD
Arch Phys Med Rehabil - Frequency and Volume of Resistance Training
Michael L. Pollock, PhD, James E. Graves, PhD, Marcas M. Bamman, MS, Scott H. Leggett, MS, David M. Carpenter, MS, Cecily Carr, MS, Joe Cirulli, Jan Matkozich, Michael Fulton, MD
Arch Phys Med Rehabil - Isometric Torso Rotation Strength
Pamela L. DeMichele, MS, Michael L. Pollock, PhD, James E. Graves, PhD, Daniel N. Foster, MS, David Carpenter, MS, Linda Garzarella, MS, William Brechue, PhD, Michael Fulton, MD
Arch Phys Med Rehabil - Low Back Strengthening for the Prevention and Treatment of Low Back Pain
David M. Carpenter and Brian W. Nelson
Medicine & Science in Sports & Medicine - Pelvic Stabilization During Resistance Training: Its Effect on the Development of Lumbar Extension Strength
James E. Graves, PhD, Dina C. Webb, MS, PT, Michael L. Pollock, PhD, Jan Matkozich, Scott H. Leggett, MS, David M. Carpenter, MS, Dan N. Foster, MS, Joseph Cirulli
Arch Phys Med Rehabil - Philadelphia Panel Evidence-Based Clinical Practice Guidelines on Selected Rehabilitation Interventions: Overview Methodology
American Physical Therapy Association
Physical Therapy - Quantitative Assessment and Training of Isometric Cervical Extension Strength
Scott H. Leggett, MS, James E. Graves, PhD, Michael L. Pollock, PhD, Michael Shank, MS, David M. Carpenter, MS, Bryon Holmes, MS, Michael N. Fulton, MD
Medicine & Science in Sports & Medicine - Quantitative Assessment of Full Range-of-Motion Isometric Lumbar Extension Strength
James E. Graves, PhD, Michael L. Pollock, PhD, David M. Carpenter, MS, Scott H. Leggett, MS, Arthur Jones, Michael MacMillan, MD, Michael N. Fulton, MD
Arch Phys Med Rehabil - Resistance Exercise and Bone Turnover in Elderly Men and Women
Kevin R. Vincent and Randy W. Braith
Medicine & Science in Sports & Medicine - Specific Spinal Exercise: Three Case Studies Using the MedX Lumbar Extension Machine
Brian D. Johnston
IART Research - Spinal Rehabilitation Part 1
James E. Graves, PhD, Dina C. Webb, MS, PT, Michael L. Pollock, PhD, Jan Matkozich, Scott H. Leggett, MS, David M. Carpenter, MS, Dan N. Foster, MS, Joseph Cirulli - Strength Testing Can Identify Malingering
Brian D. Johnston
The Journal of Workers Compensation - Strength Training Methods and the Work of Arthur Jones
Dave Smith and Stewart Bruce-Low
Journal of Exercise Physiology - The Effect of early Isolated Lumbar Extension Exercise Program for Patients with Herniated Disc Undergoing Lumbar Discectomy
Choi G, Raiturker PP, Kim MJ, Jin CD, Chae YS
Neurosurgery - The Effect of Workplace Based Strengthening on Low Back Injury Rates
Vert Mooney, Marvin Kron, Patrick Rummerfield, Bryon Holmes
Journal of Occupational Rehabilitation - The Role of Measured Resistance Exercises in Adolescent Scoliosis
Vert Mooney, MD, Allison Brigham, BS
Orthopedics - Two-year follow-up of a randomized clinical trial of spinal manipulation and two types of exercise for patients with chronic neck pain
Evans R, Bronfort G, Nelson B, Goldsmith CH
Spine
Source: MedX website
