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Jaw–neck motor strategy during jaw‐opening with resistance load
Umeå universitet, Medicinska fakulteten, Institutionen för odontologi.ORCID-id: 0000-0002-1932-9610
Umeå universitet, Medicinska fakulteten, Institutionen för odontologi. Department of Orofacial Pain and Jaw Function, Faculty of Odontology, Malmö University, Malmö, Sweden.ORCID-id: 0000-0001-6088-3739
Umeå universitet, Medicinska fakulteten, Institutionen för odontologi. Department of Research and Development, Umeå University, Sundsvall, Sweden.ORCID-id: 0000-0003-1194-8975
Umeå universitet, Medicinska fakulteten, Institutionen för odontologi.ORCID-id: 0000-0002-8346-5289
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2022 (Engelska)Ingår i: Journal of Oral Rehabilitation, E-ISSN 1365-2842, Vol. 49, nr 5, s. 514-521Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Background:  The jaw and neck motor systems have a close functional integration but the effect of resistance load to the mandible during jaw opening on the jaw-neck integration is not known.

Objectives:  To evaluate the effect of resistance load compared to no load on integrated jaw and neck motor function in individuals free from pain and dysfunction in the jaw and neck regions.

Methods:  Jaw and head movements during continuous jaw opening were recorded with an optoelectronic system (MacReflex® ) in 26 pain-free individuals (14 women, 12 men, mean age 22 years). Jaw opening was performed with and without resistance load (1600 g) to the mandible. The relationship between jaw movement amplitude, head movement amplitude, head/jaw ratio (quotient of head and jaw movement amplitude) and resistance load were modelled using linear mixed-model analysis. A p-value <.05 was considered statistically significant.

Results:  The expected head/jaw ratio mean was increased by 0.05 (95% CI: 0.03, 0.08, p < .001) with resistance load as compared to no load. This corresponds to an increase in expected mean by 55.6%. With resistance load, expected mean head movement amplitude increased by 1.4 mm (95% CI: 0.2, 2.5, p = .018), and expected mean jaw movement amplitude decreased by 3.7 mm (95% CI: -7.0, -0.5, p = .025).

Conclusion:  There is a compensation and adaptation of integrated jaw-neck motor function with an altered jaw-neck motor strategy during jaw opening with resistance load compared to no load. The head/jaw ratio demonstrates increased proportional involvement of the neck during increased load on the jaw system.

Ort, förlag, år, upplaga, sidor
John Wiley & Sons, 2022. Vol. 49, nr 5, s. 514-521
Nyckelord [en]
exercise, jaw, motor activity, motor skills, movement, neck
Nationell ämneskategori
Odontologi
Forskningsämne
odontologi
Identifikatorer
URN: urn:nbn:se:umu:diva-190626DOI: 10.1111/joor.13291ISI: 000731492000001PubMedID: 34878690Scopus ID: 2-s2.0-85121471921OAI: oai:DiVA.org:umu-190626DiVA, id: diva2:1621798
Forskningsfinansiär
Region Västerbotten, 7003768Tillgänglig från: 2021-12-20 Skapad: 2021-12-20 Senast uppdaterad: 2024-01-17Bibliografiskt granskad

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Böthun, AliciaHäggman-Henrikson, BirgittaWiesinger, BirgittaWänman, AndersÖsterlund, Catharina

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Böthun, AliciaHäggman-Henrikson, BirgittaWiesinger, BirgittaWänman, AndersHellström, FredrikÖsterlund, Catharina
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Journal of Oral Rehabilitation
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