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In this investigation, participants perform simulated occupational work during which the task performance will be logged. This research investigates the effect of peripheral fatigue and a passive shoulder exoskeleton on the task performance.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Peripheral fatigue - No support | Experimental | peripheral fatigue induced and overhead work performed without exoskeleton support |
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| Peripheral fatigue - Exoskeleton support | Experimental | peripheral fatigue induced and overhead work performed with exoskeleton support |
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| No fatigue - No support | Experimental | peripheral fatigue induced and overhead work performed without exoskeleton support |
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| No fatigue - Exoskeleton support | Experimental | peripheral fatigue induced and overhead work performed with exoskeleton support |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Passive shoulder exoskeleton | Device | Participants complete overhead working task with support of exo |
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| Measure | Description | Time Frame |
|---|---|---|
| Work accuracy | The number of errors is tracked | During 2 minutes overhead work |
| Work pace | Time to completion is tracked | During 2 minutes overhead work |
| Measure | Description | Time Frame |
|---|---|---|
| Surface electromyography | Cometa (Mini Wave) sensors with Ambu (BlueSensor) electrodes will be used to collect electromyographic data conform the SENIAM guidelines. The muscles that will be monitored are: deltoideus anterior, deltoideus medialis, deltoideus posterior, pectoralis major, latissimus dorsi, brachioradialis, biceps brachii, triceps brachii, trapezius descendens, infraspinatus, supraspinatus, flexor carpi radialis, serratus anterior on the right side of the body. The locations of the sensors will be prepared by shaving, abrasion with sandpaper and cleaning with alcohol. To allow relative expression of muscle activity, maximal voluntary contractions (MVC) of each muscle that is being monitored will be collected. The average of the maximal activity out of the best two out of three contractions will serve as the MVC value. The outcomes will be the activities of the muscles (as a percentage of the MVC) monitored during the tests. |
| Measure | Description | Time Frame |
|---|---|---|
| Force output | measure output force during elevation of the arms in a 45° flexed shoulder angle | before and after 4 minute during fatigue inducing protocol |
Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Romain Meeusen, PhD | Vrije Universiteit Brussel | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Lichamelijk Opvoeding en Kinesitherapie | Brussels | 1050 | Belgium |
Data will be published in scientific journal. No IPD will be published.
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counterbalanced randomized cross-over study
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The support of the exoskeleton is concealed. The support will be 'no support' or 'support'.
| Fatigue protocol | Behavioral | Participants complete a fatiguing protocol |
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| No exoskeleton support | Device | Exoskeleton is worn, but no support provided |
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| No peripheral fatiguing protocol | Behavioral | Participants complete no fatiguing protocol |
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| During 2 minutes overhead work |
| Kinematic smoothness of movement | Inetrial Measurement Units will be used to track how smoothly the overhead work is completed. Smoothness is determined by the Spectral Arc method. | During 2 minutes overhead work |
| Workload | NASA TLX questionnaire for workload | After 2 minutes of overhead work |
| ID | Term |
|---|---|
| D005221 | Fatigue |
| D013180 | Sprains and Strains |
| ID | Term |
|---|---|
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D014947 | Wounds and Injuries |
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