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Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-30243
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dc.contributor.authorEleonora, Croci-
dc.contributor.authorWarmuth, Fabian-
dc.contributor.authorBaum, Cornelia-
dc.contributor.authorKovacs, Balazs-
dc.contributor.authorNüesch, Corina-
dc.contributor.authorBaumgartner, Daniel-
dc.contributor.authorMüller, Andreas Marc-
dc.contributor.authorMündermann, Annegret-
dc.date.accessioned2024-03-15T15:46:27Z-
dc.date.available2024-03-15T15:46:27Z-
dc.date.issued2023-08-04-
dc.identifier.issn1590-9921de_CH
dc.identifier.issn1590-9999de_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/30243-
dc.description.abstractBackground: Rotator cuff muscles stabilise the glenohumeral joint and contribute to the initial abduction phase with other shoulder muscles. This study aimed to determine if the load-induced increase in shoulder muscle activity during a 30° abduction test is influenced by asymptomatic or symptomatic rotator cuff pathologies. Materials and Methods: Twenty-five patients with unilateral rotator cuff tears (age, 64.3 ± 10.2 years), 25 older control subjects (55.4 ± 8.2 years) and 25 younger control subjects (26.1 ± 2.3 years) participated in this study. Participants performed a bilateral 30° arm abduction and adduction movement in the scapular plane with handheld weights (0–4 kg). Activity of the deltoid, infraspinatus, biceps brachii, pectoralis major, latissimus dorsi and upper trapezius muscles was analysed at maximum abduction angle after normalisation to maximum voluntary contraction. Shoulders were classified into rotator cuff tendinopathy, asymptomatic and symptomatic rotator cuff tears, and healthy based on magnetic resonance images. A linear mixed model (loads, shoulder types) with random effects (shoulder identification) was applied to the log-transformed muscle activities. Results: Muscle activity increased with increasing load in all muscles and shoulder types (P < 0.001), and 1-kg increments in additional weights were significant (P < 0.001). Significant effects of rotator cuff pathologies were found for all muscles analysed (P < 0.05). In all muscles, activity was at least 20% higher in symptomatic rotator cuff tears than in healthy shoulders (P < 0.001). Symptomatic rotator cuff tears showed 20–32% higher posterior deltoid (P < 0.05) and 19–25% higher pectoralis major (P < 0.01) activity when compared with asymptomatic tears. Conclusions: Rotator cuff pathologies are associated with greater relative activity of shoulder muscles, even with low levels of additional load. Therefore, the inclusion of loaded shoulder tests in the diagnosis and rehabilitation of rotator cuff pathologies can provide important insight into the functional status of shoulders and can be used to guide treatment decisions.de_CH
dc.language.isoende_CH
dc.publisherSpringerde_CH
dc.relation.ispartofJournal of Orthopaedics and Traumatologyde_CH
dc.rightshttp://creativecommons.org/licenses/by/4.0/de_CH
dc.subjectShoulderde_CH
dc.subjectRotator cuff tearde_CH
dc.subjectRotator cuff tendinopathyde_CH
dc.subjectElectromyographyde_CH
dc.subjectAbductionde_CH
dc.subjectScaptionde_CH
dc.subjectMotion capturede_CH
dc.subjectMuscle activityde_CH
dc.subjectMagnetic resonancede_CH
dc.subjectLoadde_CH
dc.subject.ddc616.7: Krankheiten des Bewegungsapparates und Orthopädiede_CH
dc.titleLoad-induced increase in muscle activity during 30° abduction in patients with rotator cuff tears and control subjectsde_CH
dc.typeBeitrag in wissenschaftlicher Zeitschriftde_CH
dcterms.typeTextde_CH
zhaw.departementSchool of Engineeringde_CH
zhaw.organisationalunitInstitut für Mechanische Systeme (IMES)de_CH
dc.identifier.doi10.1186/s10195-023-00720-8de_CH
dc.identifier.doi10.21256/zhaw-30243-
zhaw.funding.euNode_CH
zhaw.issue41de_CH
zhaw.originated.zhawYesde_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.volume24de_CH
zhaw.publication.reviewPeer review (Publikation)de_CH
zhaw.funding.snf189082de_CH
zhaw.webfeedBME Biomechanical Engineeringde_CH
zhaw.author.additionalNode_CH
zhaw.display.portraitYesde_CH
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Eleonora, C., Warmuth, F., Baum, C., Kovacs, B., Nüesch, C., Baumgartner, D., Müller, A. M., & Mündermann, A. (2023). Load-induced increase in muscle activity during 30° abduction in patients with rotator cuff tears and control subjects. Journal of Orthopaedics and Traumatology, 24(41). https://doi.org/10.1186/s10195-023-00720-8
Eleonora, C. et al. (2023) ‘Load-induced increase in muscle activity during 30° abduction in patients with rotator cuff tears and control subjects’, Journal of Orthopaedics and Traumatology, 24(41). Available at: https://doi.org/10.1186/s10195-023-00720-8.
C. Eleonora et al., “Load-induced increase in muscle activity during 30° abduction in patients with rotator cuff tears and control subjects,” Journal of Orthopaedics and Traumatology, vol. 24, no. 41, Aug. 2023, doi: 10.1186/s10195-023-00720-8.
ELEONORA, Croci, Fabian WARMUTH, Cornelia BAUM, Balazs KOVACS, Corina NÜESCH, Daniel BAUMGARTNER, Andreas Marc MÜLLER und Annegret MÜNDERMANN, 2023. Load-induced increase in muscle activity during 30° abduction in patients with rotator cuff tears and control subjects. Journal of Orthopaedics and Traumatology. 4 August 2023. Bd. 24, Nr. 41. DOI 10.1186/s10195-023-00720-8
Eleonora, Croci, Fabian Warmuth, Cornelia Baum, Balazs Kovacs, Corina Nüesch, Daniel Baumgartner, Andreas Marc Müller, and Annegret Mündermann. 2023. “Load-Induced Increase in Muscle Activity during 30° Abduction in Patients with Rotator Cuff Tears and Control Subjects.” Journal of Orthopaedics and Traumatology 24 (41). https://doi.org/10.1186/s10195-023-00720-8.
Eleonora, Croci, et al. “Load-Induced Increase in Muscle Activity during 30° Abduction in Patients with Rotator Cuff Tears and Control Subjects.” Journal of Orthopaedics and Traumatology, vol. 24, no. 41, Aug. 2023, https://doi.org/10.1186/s10195-023-00720-8.


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