Effects of photobiomodulation therapy (pulsed LASER 904 nm) on muscle oxygenation and performance in exercise-induced skeletal muscle fatigue in young women: a pilot study

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dc.citation.volume10048
dc.contributor.authorOliveira, Murilo Xavier
dc.contributor.authorToma, Renata Luri [UNIFESP]
dc.contributor.authorJones, Brett J. L.
dc.contributor.authorCyprien, Thomas P.
dc.contributor.authorTier, Matthew R.
dc.contributor.authorWallace, Cameron A.
dc.contributor.authorRenno, Ana Claudia Muniz [UNIFESP]
dc.contributor.authorSabapathy, Surendran
dc.contributor.authorLaakso, E-Liisa
dc.coverageBellingham
dc.date.accessioned2020-07-17T14:03:34Z
dc.date.available2020-07-17T14:03:34Z
dc.date.issued2017
dc.description.abstractPhotobiomodulation therapy (PBMt) has been used to increase muscle performance and improve recovery when applied before exercise. We aimed to evaluate the effects of PBMt using LASER on muscle oxygenation and performance. The study was a randomized, participant and assessor-blinded, within-subject crossover trial with placebo control to test the viability of the methods. Five physically active young women were randomly assigned to either placebo, or active PBMt (12 diode cluster probe; 904 nm; 60 mW; 250 Hz; 43.2 J per site, 129.6 J total) in contact over rectus femoris (RF) muscle of the dominant limb immediately before an isokinetic fatigue protocol. A one-week wash-out period preceded cross-over. Electromyography and isokinetic performance measures were evaluated. Absolute concentrations of deoxygenated haemoglobin and myoglobin (deoxy[Hb + Mb]) of the RF, an index of local microvascular fractional O2 extraction, was monitored continuously by near-infrared spectroscopy (NIRS). Total haemoglobin concentration as an indicator of microvascular haematocrit was calculated as the sum of the deoxy[Hb + Mb] and oxy[Hb + Mb] signals. PBMt pre-conditioning reduced time to peak torque when compared to placebo (P<0.05). PBMt resulted in a noticeably reduced trend in deoxy[Hb + Mb] during exercise compared to placebo (P>0.05). PBMt before exercise improves indicators of muscle performance, potentially by increasing local matching of bulk and microvascular O2 delivery relative to skeletal muscle O2 utilisation. Further work is required to understand the effect of PBMt on haemodynamic and metabolic characteristics of muscle.en
dc.description.affiliationUniv Fed Vales Jequitinhonha & Mucuri, Fed Univ Jequitinhonha & Mucuri Valleys, Dept Physiotherapy, Rodovia MGT 367,Km 583,5000, BR-39100000 Diamantina, MG, Brazil
dc.description.affiliationUniv Fed Sao Paulo, Dept Biosci, Campus Baixada Santista,Av Ana Costa 95, BR-11060001 Santos, SP, Brazil
dc.description.affiliationGriffith Univ, Sch Allied Hlth Sci, Parklands Dr, Southport, Qld 4222, Australia
dc.description.affiliationGriffith Univ, Menzies Hlth Inst Queensland, Parklands Dr, Southport, Qld 4222, Australia
dc.description.affiliationUnifespUniv Fed Sao Paulo, Dept Biosci, Campus Baixada Santista,Av Ana Costa 95, BR-11060001 Santos, SP, Brazil
dc.description.sourceWeb of Science
dc.format.extent-
dc.identifierhttps://dx.doi.org/10.1117/12.2253585
dc.identifier.citationMechanisms Of Photobiomodulation Therapy Xii. Bellingham, v. 10048, p. -, 2017.
dc.identifier.doi10.1117/12.2253585
dc.identifier.issn0277-786X
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/55498
dc.identifier.wosWOS:000407023900008
dc.language.isoeng
dc.publisherSpie-Int Soc Optical Engineering
dc.relation.ispartofConference on Mechanisms of Photobiomodulation Therapy XII
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectPhotobiomodulation therapyen
dc.subjectLASER therapyen
dc.subjectMuscle fatigueen
dc.subjectDeoxygenated haemoglobinen
dc.subjectMuscle performanceen
dc.subjectMuscle oxygenationen
dc.titleEffects of photobiomodulation therapy (pulsed LASER 904 nm) on muscle oxygenation and performance in exercise-induced skeletal muscle fatigue in young women: a pilot studyen
dc.typeinfo:eu-repo/semantics/conferenceObject
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