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Lasers in Medical Science

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01.01.2015 | Original Article

The effects of transcranial LED therapy (TCLT) on cerebral blood flow in the elderly women

verfasst von: Afonso S. I. Salgado, Renato A. Zângaro, Rodolfo B. Parreira, Ivo I. Kerppers

Erschienen in: Lasers in Medical Science | Ausgabe 1/2015

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Abstract

During aging processes, there is a range of functional changes, where we can highlight the disease related to the central nervous system, such as Alzheimer disease and others forms of dementia. This study investigated the effects of transcranial light emitting diode (LED) on cerebral blood flow in healthy elderly women analyzed by transcranial Doppler ultrasound (TCD) of the right and left middle cerebral artery and basilar artery. Twenty-five noninstitutionalized elderly women (mean age 72 years old), with a cognitive status >24, were assessed using transcranial Doppler ultrasound on two separate occasions: pre-irradiation and post-transcranial LED therapy (TCLT). Prior to this, they answered two questionnaires: the perceived stress scale and the general health questionnaire. TCLT (627 nm, 70 mW/cm², 10 J/cm²) was performed at four points of the frontal and parietal region for 30 s each, totaling 120 s two times per week for 4 weeks. Paired t-test results showed that there was a significant improvement after TCLT with increase in the systolic and diastolic velocity of the left middle cerebral artery (25 and 30 %, respectively) and basilar artery (up to 17 and 25 %), as well as a decrease in the pulsatility index and resistance index values of the three cerebral arteries analyzed (p < 0.05). TCD parameters showed improvement in the blood flow on the arteries analyzed. TCLT promoted a blood and vasomotor behavior of the basilar and middle cerebral arteries in healthy elderly women.

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Titel: The effects of transcranial LED therapy (TCLT) on cerebral blood flow in the elderly women
verfasst von: Afonso S. I. Salgado
Renato A. Zângaro
Rodolfo B. Parreira
Ivo I. Kerppers
Publikationsdatum: 01.01.2015
Verlag: Springer London
Erschienen in: Lasers in Medical Science / Ausgabe 1/2015
Print ISSN: 0268-8921
Elektronische ISSN: 1435-604X
DOI: https://doi.org/10.1007/s10103-014-1669-2

Springer Medizin

Abstract

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