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Can Microprocessor-Controlled Prosthetic Knees Reduce Attentional Demand during Singleand Dual-task Walking?
Högskolan i Jönköping, Hälsohögskolan, HHJ, Avd. för omvårdnad. Högskolan i Jönköping, Hälsohögskolan, HHJ. ADULT.
Högskolan i Jönköping, Hälsohögskolan, HHJ, Avd. för rehabilitering. Högskolan i Jönköping, Hälsohögskolan, HHJ. CHILD.ORCID-id: 0000-0001-8994-8786
Advanced Reconstruction of Extremities, Sahlgrenska University Hospital.
Högskolan i Jönköping, Hälsohögskolan, HHJ, Avd. för rehabilitering. Högskolan i Jönköping, Hälsohögskolan, HHJ. ADULT.ORCID-id: 0000-0002-0220-6278
2019 (Engelska)Konferensbidrag, Muntlig presentation med publicerat abstract (Refereegranskat)
Abstract [en]

BACKGROUND

Walking with a lower-limb prosthesis while performing a secondary task (dual-tasking) has been suggested to increase demand on attentional resources, negatively affecting balance and gait performance.[1, 2] Brain imaging research has suggested that microprocessor-controlled prosthetic knees (MPKs) reduce attentional demands during single-task walking.[3] To date the effects of MPK on brain activity during dual-task walking has not been investigated.

AIM

To evaluate effects of single- and dual-task walking on cortical brain activity in individuals using a non-MPK or MPK and controls and compare differences between the 3 groups.

METHOD

A cross-sectional study was performed involving twenty-nine individuals with a transfemoral amputation or knee disarticulation who were provided with either a non-MPK or an MPK, and 16 controls. Functional near-infrared spectroscopy was used to evaluate cortical brain activity (oxygenated haemoglobin (oxyHb) concentration level changes) while participants walked on a stable level surface and simultanously performed 2 dual-task activities; 1) walking while sorting through keys; and, 2) walking in sequence around randomly number cones. Temporospatial variables was recorded for each activity.

RESULTS

Increased brain activity (oxyHb concentration level changes) were observed when a secondary task was added in the MPK-group (p=.000) and in the control group (p=.007). No significant differences were observed between single- and dual-task walking in the non-MPK group (p>.05). Significantly increased brain activity (oxyHb concentrations level changes) was observed during single-task walking in the non-MPK group when compared to the MPK-group and controls. Significantly different results in temporospatial parameters were also observed.

DISCUSSION AND CONCLUSION

Results suggest that dual-task walking increases cognitive demand in individuals fitted with MPKs and controls. The lack of difference with the non-MPK group may suggests that their maximum capacity was already reached during single-task walking.

REFERENCES

[1] Morgan, Prosthet Orthot Int 2016. [2] Nagamatsu, Psychol Aging 2011. [3] Möller, Prosthet Orthot Int 2018.

ACKNOWLEDGEMENTS

Thanks to Jette Schack, Evin Güler, Vera Kooiman, Lamija Pasalic, Promobilia Foundation, ALF/LUA Research Grants, Össur and Team Olmed.

Ort, förlag, år, upplaga, sidor
2019.
Nationell ämneskategori
Sjukgymnastik
Identifikatorer
URN: urn:nbn:se:hj:diva-46966OAI: oai:DiVA.org:hj-46966DiVA, id: diva2:1375154
Konferens
ISPO’s 17th World Congress (International Society for Prosthetics and Orthotics), 5-8 October 2019, Kobe, Japan
Tillgänglig från: 2019-12-04 Skapad: 2019-12-04 Senast uppdaterad: 2019-12-04Bibliografiskt granskad

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Möller, SaffranRamstrand, NerrolynRusaw, David

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HHJ, Avd. för omvårdnadHHJ. ADULTHHJ, Avd. för rehabiliteringHHJ. CHILD
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