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The main aims of the study are (1) to examine the impact of contralateral strength training on the quadriceps muscle function after ACL surgery and (2) to compare the magnitude of cross-education induced by NMES versus eccentric strength training.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| NMES | Experimental | neuromuscular electrical stimulation (NMES) of the quadriceps muscle with Kneehab |
|
| eccentric training | Experimental | unilateral eccentric resistance exercises |
|
| sham NMES | Sham Comparator | neuromuscular electrical stimulation of the quadriceps muscle with intensity which causes no visible contraction or displacement of the leg (activation below motor threshold) |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Neuromuscular electrical stimulation | Behavioral |
| ||
| eccentric training |
| Measure | Description | Time Frame |
|---|---|---|
| Change in bilateral quadriceps muscle strength [Nm] | 1-2weeks preoperative/ 2weeks/ 8weeks/ 6month | |
| Change in quadriceps muscle activation | 1-2 weeks preoperative/ 2weeks/ 8weeks/ 6month |
| Measure | Description | Time Frame |
|---|---|---|
| Change in muscle architecture | 1-2 weeks preoperative/ 2weeks/ 8weeks/ 6month | |
| Change in self-reported questionnaire outcomes (KOOS, WOMAClk) | 1-2weeks preoperative/ 2weeks/ 8weeks/ 6 month | |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Nicola A Maffiuletti, PhD | Schulthess Klinik | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Neuromuscular Research Laboratory, Schulthess Klinik | Zurich | Canton of Zurich | 8008 | Switzerland |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 21343386 | Background | Feil S, Newell J, Minogue C, Paessler HH. The effectiveness of supplementing a standard rehabilitation program with superimposed neuromuscular electrical stimulation after anterior cruciate ligament reconstruction: a prospective, randomized, single-blind study. Am J Sports Med. 2011 Jun;39(6):1238-47. doi: 10.1177/0363546510396180. Epub 2011 Feb 22. | |
| 10198150 |
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| Behavioral |
|
| functional test outcomes |
Assessment of present functional status by means of hop tests |
| 6month postop |
| Hortobagyi T, Scott K, Lambert J, Hamilton G, Tracy J. Cross-education of muscle strength is greater with stimulated than voluntary contractions. Motor Control. 1999 Apr;3(2):205-19. doi: 10.1123/mcj.3.2.205. |