Test-retest reliability of the internal shoulder rotator muscles' stretch reflex in healthy men
- Until now the reproducibility of the short latency stretch reflex of the internal rotator muscles of the glenohumeral joint has not been identified. Twenty-three healthy male participants performed three sets of external shoulder rotation stretches with various pre-activation levels on two different dates of measurement to assess test-retest reliability. All stretches were applied with a dynamometer acceleration of 104°/s2 and a velocity of 150°/s. Electromyographical response was measured via surface EMG. Reflex latencies showed a pre-activation effect (ƞ2 = 0,355). ICC ranged from 0,735 to 0,909 indicating an overall “good” relative reliability. SRD 95% lay between ±7,0 to ±12,3 ms.. The reflex gain showed overall poor test-retest reproducibility. The chosen methodological approach presented a suitable test protocol for shoulder muscles stretch reflex latency evaluation. A proof-of-concept study to validate the presented methodical approach in shoulder involvement including subjects with clinically relevant conditions is recommended.
Author: | Lars N. Heinke, Axel J. Knicker, Kirsten AlbrachtORCiD |
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DOI: | https://doi.org/10.1016/j.jelekin.2021.102611 |
ISSN: | 1050-6411 |
Parent Title (English): | Journal of Electromyography and Kinesiology |
Publisher: | Elsevier |
Place of publication: | Amsterdam |
Document Type: | Article |
Language: | English |
Year of Completion: | 2021 |
Tag: | intraclass correlation coefficient; shoulder; standard error of measurement; stretch reflex; test-retest reliability |
Volume: | 62 |
Issue: | Article 102611 |
Link: | https://doi.org/10.1016/j.jelekin.2021.102611 |
Zugriffsart: | campus |
Institutes: | FH Aachen / Fachbereich Medizintechnik und Technomathematik |
FH Aachen / IfB - Institut für Bioengineering | |
collections: | Verlag / Elsevier |