Pre-exercise led phototherapy (638 nm) prevents grip strength loss in elderly women: a double-blind randomized controlled trial

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dc.contributor.authorMatos, Areolino Pena
dc.contributor.authorNavarro, Ricardo Scarparo
dc.contributor.authorLombardi Júnior, Imperio [UNIFESP]
dc.contributor.authorBrugnera, Aldo, Jr.
dc.contributor.authorMunin, Egberto
dc.contributor.authorVillaverde, Antonio Balbin
dc.date.accessioned2019-01-21T10:29:55Z
dc.date.available2019-01-21T10:29:55Z
dc.date.issued2016
dc.description.abstractBACKGROUND: LED phototherapy can attenuate muscle fatigue and accelerate muscle recovery in young persons, but little is known about photobiomodulation effects on muscle strength in the elderly. OBJECTIVE: To assess the effects of LED phototherapy on the grip strength and muscle fatigue of wrist flexors in elderly women. METHODS: Twenty-nine women were recruited and allocated to Placebo Group (PG) (n = 14) and LED Group (LG) (n = 15). Grip strength, number of resisted wrist flexion repetitions, and serum creatine kinase (CK) were measured. The subjects were irradiated with one diode (638 nm, 150 mW, 11.7 J/cm(2), 4.5 J/point) at four points on the wrist flexor muscles, and fatigue was induced by exercise using 75% of one maximum repetition (1MR). When muscle fatigue was reached, grip strength and CK were reassessed. RESULTS: In the LG, there was no intra-group difference for grip strength (N), 217.7 +/- 34.3 to 209.9 +/- 35.3 (p = 0.063) whereas in the PG, there was decrease in strength from 203.0 +/- 22.5 to 181.4 +/- 21.6 (p < 0.001). LED increased the number of repetitions by 22.0%. An increase in CK (U/L) was observed in PG in all post-fatigue periods (p = 0.003) but no difference was found in the LG (p = 0.972). CONCLUSIONS: A single application of LED before muscle fatigue induction may effectively maintain grip strength and reduce muscle fatigue and damage.en
dc.description.affiliationFederal University of Amapá, Campus Marco Zero, Macapá, AP, Brazil
dc.description.affiliationBiomedical Engineering Institute, Camilo Castelo Branco University, São Paulo, Brazil
dc.description.affiliationHuman Movement Science Department, Federal University of São Paulo, Santos, SP, Brazil
dc.description.affiliationUnifespHuman Movement Science Department, Federal University of São Paulo, Santos, SP, Brazil
dc.description.sourceWeb of Science
dc.format.extent83-89
dc.identifierhttp://dx.doi.org/10.3233/IES-150604
dc.identifier.citationIsokinetics And Exercise Science. Amsterdam, v. 24, n. 2, p. 83-89, 2016.
dc.identifier.doi10.3233/IES-150604
dc.identifier.issn0959-3020
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/49478
dc.identifier.wosWOS:000378947900001
dc.language.isoeng
dc.publisherIos press
dc.relation.ispartofIsokinetics And Exercise Science
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectElderlyen
dc.subjectMuscle Fatigueen
dc.subjectMuscle Strengthen
dc.subjectDynamometeren
dc.subjectPhototherapyLight-Emitting-Diodesen
dc.subjectSkeletal-Muscle Fatigueen
dc.subjectLevel Laser Therapyen
dc.subjectLimb Blood-Flowen
dc.subjectMitochondrial Dysfunctionen
dc.subjectIsometric-Exerciseen
dc.subjectHandgrip Strengthen
dc.subjectFollow-Upen
dc.subjectIrradiationen
dc.subjectSarcopeniaen
dc.titlePre-exercise led phototherapy (638 nm) prevents grip strength loss in elderly women: a double-blind randomized controlled trialen
dc.typeinfo:eu-repo/semantics/article
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