An interventional study of Negative Work and Stretching in Osteoarthritis and Arthritis, sponsored by Washington D.C. Veterans Affairs Medical Center. Status unknown at 1 site in United States. Open to male participants aged 50 Years to 70 Years. Per ClinicalTrials.gov, last updated 2018-09-20.
Sponsored by Washington D.C. Veterans Affairs Medical Center · Not applicable, Interventional, and Treatment
The purpose of this study is to develop a negative work exercise regimen as an intervention for posttraumatic osteoarthritis (PTOA). "Negative work" is the force produced by muscles as they lengthen, and regularly occurs with common activities such as lowering an object from a shelf or walking down stairs. In this study, the investigators are examining the effectiveness of negative work exercise over a 12-week period in older, male, Veterans.
Purpose: To develop a negative work exercise regimen as an intervention for posttraumatic osteoarthritis (PTOA). Given that the medical management of chronic PTOA is similar to idiopathic OA, the investigators propose a randomized, clinical trial to pilot negative work exercise in Veterans with knee OA as a proof-of-concept study for a subsequent investigation for people with PTOA.
Research Setting: DC VAMC, Physical Medicine \& Rehabilitation Laboratory
Participants: Men between the ages of 50 and 70 years with a history of bilateral knee osteoarthritis will be consecutively recruited from the DC VAMC Rheumatology Service, Geriatrics Service, and Primary Care Medical Service.
Implications/Significance: The use of negative work exercise to enhance the force attenuation properties of muscle is an innovative approach to the treatment of OA and PTOA, and represents a significant departure from previous rehabilitation studies concerning arthritis. Use of a negative work paradigm may prove to be beneficial for older Veterans with OA and active military personnel with PTOA since similar muscle mechanics are involved in the energy absorption at the knee joint during gait. Despite the functional importance of lengthening muscle actions in protecting weight-bearing joints affected by arthritis, the authors are not aware of a study that involves the sole use of a negative work intervention for OA or PTOA. Addressing the aims of this proposal would lay the ground work needed to justify larger clinical trials featuring the negative work paradigm for soldiers with PTOA.
3,554 studies on the registry are indexed under Arthritis; 317 are open to participants now.
This study's enrollment of 54 is below the median of 90 across 2,377 interventional studies indexed under Arthritis.
Browse Arthritis studies →Washington D.C. Veterans Affairs Medical Center is the lead sponsor of 19 studies on the registry; 6 are open to participants now.
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Exclusion Criteria:
Negative work exercise via isokinetic knee extension/flexion will be performed twice per week for 12 weeks.
Other: Negative Work
A home exercise program consisting of stretches for the major lower extremity muscles groups will be performed twice per week for 12 weeks.
Other: Stretching
Exercise will be performed twice per week for 12 weeks and exercise intensity will be progressed in three phases. These phases are: 1. Familiarization 2. Acclimatization 3. Progression Exercise volume will be 3 sets of 10 repetitions (progressing to 4 sets at Week 6) for the knee flexors and extensors. All exercise will be supervised by a physical therapist and performed on a Biodex isokinetic dynamometer.
Also known as: Eccentric exercise
Home exercise program will be performed by the Placebo Comparator group and feature stretching over the 12 week intervention period.
Maximum Voluntary Contraction (MVC; ft-lbs)
Isokinetic assessment of MVC for the knee extensors and flexors.
Time frame: 12 weeks
Muscle thickness (cm)
Diagnostic ultrasound assessment of the rectus femoris
Time frame: 12 weeks
Step Up/Over Test (movement time (s); kinetics (force indices)
The Step Up/Over Test involves stepping over an 8'' block with the use of a force plate. We will assess concentric force upon ascent, and eccentric force upon descent; the symmetry of these forces will be expressed as an index.
Time frame: 12 weeks
Physical Performance Test (PPT-7)
The PPT-7 is a performance-based assessment of function validated for use in older adults. Participant scores will be compared to reference, age-matched, data.
Time frame: 12 weeks
Knee injury and Osteoarthritis Outcome Score (KOOS; English version LK1.0)
Knee OA-specific questionnaire concerning mobility and health-related quality of life changes over time. Participant scores will be compared to a normative comparison group, and the published minimal detectable change scores as validated for a knee OA reference group.
Time frame: 12 weeks
Visual Analog Scale for Pain (VAS; 0-10)
VAS will be assessed using a pressure algometer at the mid-thigh before and after negative work exercise.
Time frame: 12 weeks
This study is status unknown, as verified in Sep 2018. You cannot join it, but the record below documents what was studied.
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Washington D.C. Veterans Affairs Medical Center