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| Name | Class |
|---|---|
| Foundation for Physical Therapy, Inc. | INDUSTRY |
| American Physical Therapy Association | OTHER |
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While surgical anterior cruciate ligament reconstruction (ACLR) of the knee restores passive stability, studies are showing consistently poor long-term outcomes. Unusually high risks of early-onset osteoarthritis and re-injury, and low rate of return to sport following ACLR all seem to be related to a chronic tendency to land stiff-legged from a jump or hop, which itself may be due to fear of re-injury. Decreased knee bending for force absorption simultaneously decreases performance level and increases risk for injury and arthritic changes.
The purpose of the proposed study is to compare a current best-practice plyometric training program to one utilizing body weight support to increase repetition and improve performance in the initial phases. The investigators hypothesize that we will see larger improvements in absorptive capacity of the knee and better confidence in activity immediately following body weight support training, as well as improved retention of training effects after a two-month period.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Standard Plyometric Training | Active Comparator | Participants will undergo treatment 2 times a week for 8 weeks with plyometric exercises deemed to be consistent with best practice delivered at a standard dosage of sets and repetitions. |
|
| Plyometric Training with BWS | Experimental | Participants will undergo treatment 2 times a week for 8 weeks with plyometric exercises deemed to be consistent with best practice with a treatment volume of sets and repetitions that exceeds standard practice. Higher number of practice trials will be completed with body weight support (BWS) to reduce load. Participants will start at 30 percent of body weight and will be slowly weaned away over time. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Standard Plyometric Training | Procedure | Participants will undergo individualized practice exercises of jumping, hopping, and cutting tasks consistent with standard published exercises. |
| Measure | Description | Time Frame |
|---|---|---|
| Change in sagittal plane knee kinetics and kinematics | Baseline and after 8 weeks of training | |
| Change in psychological readiness for sports activities via survey scores | baseline and after 8 weeks of training | |
| Change in motor patterning via electromyography of quadriceps and hamstring muscles | Baseline and after 8 weeks of training |
| Measure | Description | Time Frame |
|---|---|---|
| Retention of Biomechanical Adaptions in Knee kinetics and kinematics | Change from end of 8 weeks of training to 2 month follow-up | |
| Retention of adaptations in Psychological Readiness for Sport via survey | Change from end of 8 weeks of training to 2 month follow-up |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Ryan L Mizner, PT, PhD | University of Montana | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of Montana, Movement Science Laboratory | Missoula | Montana | 59812 | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 29558161 | Derived | Elias ARC, Harris KJ, LaStayo PC, Mizner RL. Clinical Efficacy of Jump Training Augmented With Body Weight Support After ACL Reconstruction: A Randomized Controlled Trial. Am J Sports Med. 2018 Jun;46(7):1650-1660. doi: 10.1177/0363546518759052. Epub 2018 Mar 20. |
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| ID | Term |
|---|---|
| D000070598 | Anterior Cruciate Ligament Injuries |
| D007718 | Knee Injuries |
| ID | Term |
|---|---|
| D007869 | Leg Injuries |
| D014947 | Wounds and Injuries |
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| ID | Term |
|---|---|
| D059385 | Plyometric Exercise |
| ID | Term |
|---|---|
| D005081 | Exercise Therapy |
| D012046 | Rehabilitation |
| D000359 | Aftercare |
| D003266 | Continuity of Patient Care |
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| Plyometric Training with BWS | Procedure | Participants will undergo individualized practice exercises of jumping, hopping, and cutting tasks consistent with standard published exercises while their body weight is supported via adjustable harness. |
|
| Retention of adaptations in motor patterning via electromyography | Change from end of 8 weeks of training to 2 month follow-up |
| D005791 |
| Patient Care |
| D013812 | Therapeutics |
| D026741 | Physical Therapy Modalities |
| D064797 | Physical Conditioning, Human |
| D015444 | Exercise |
| D009043 | Motor Activity |
| D009068 | Movement |
| D009142 | Musculoskeletal Physiological Phenomena |
| D055687 | Musculoskeletal and Neural Physiological Phenomena |