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dc.contributor.authorLaakso, Liisa
dc.date.accessioned2017-05-03T14:12:01Z
dc.date.available2017-05-03T14:12:01Z
dc.date.issued2008
dc.date.modified2008-11-27T23:40:57Z
dc.identifier.urihttp://hdl.handle.net/10072/20641
dc.description.abstractEvidence for the effect of laser phototherapy on lateral epicondylalgia (tennis elbow). Laakso L School of Physiotherapy and Exercise Science, Griffith University, Gold Coast, Australia Previous studies have demonstrated disparate results for the effect of laser phototherapy on tennis elbow pain; and a clear mechanism of effect remains elusive. To investigate a possible descending mechanism of effect, two subjects with tennis elbow were recruited (Study 1: female aged 49yrs treated with 780nm, 50mW continuous laser @ 3 J/cm2 to 11 points; Study 2: male aged 39yrs treated with 780nm, 50mW continuous laser @ 2.5 J/cm2 to 13 points). A blinded, single case research methodology was employed, with the addition of placebo in Study 2. Grip strength, pain pressure threshold (PPT) and sympathetic outflow (skin conductance (SC), skin temperature (ST) and blood flux (BF)) were measured at the affected limb before, during and after interventions. Serial dependency was calculated (autocorrelation coefficient and First Difference Transformation) before calculating the celeration line, and trends. In Study 1, the results demonstrated a statistically significant increase (p = 0.01) in pileous ST, and reductions (p = 0.01) in cutaneous BF, glabrous ST and ulnar SC on the affected side thus representing sympathoexcitation (or non-opioid-based analgesia). In Study 2, the results demonstrated increased PPT and grip strength, and decreases in other sympathetic measures post-laser (compared to the placebo period) representing a mixed opioid/non-opioid response. The results support the expectation of a clinical response after one application of laser phototherapy, and in particular a reduction in painful symptoms of lateral epicondylalgia via a sympathetic nervous system response. To clarify dose-response factors, future research with greater subject numbers will investigate laser stimulation thresholds.
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherNew Zealand Society of Physiotherapists
dc.publisher.placeWellington
dc.publisher.urihttp://www.physiotherapy.org.nz/
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofconferencenameNew Zealand Society of Physiotherapists, Physiotherapy Keeps You Moving
dc.relation.ispartofconferencetitlePhysiotherapy - Keeps you moving
dc.relation.ispartofdatefrom2008-04-18
dc.relation.ispartofdateto2008-04-20
dc.relation.ispartoflocationDunedin
dc.rights.retentionY
dc.subject.fieldofresearchcode321024
dc.titleEvidence for the effect of laser phototherapy on lateral epicondylalgia (tennis elbow)
dc.typeConference output
dc.type.descriptionE3 - Conferences (Extract Paper)
dc.type.codeE - Conference Publications
gro.facultyGriffith Health, School of Allied Health Sciences
gro.date.issued2008
gro.hasfulltextNo Full Text
gro.griffith.authorLaakso, Liisa


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    Contains papers delivered by Griffith authors at national and international conferences.

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