The primary objective of this study is to confirm and compare the effect of methods of Low-level light therapy (LED-T) in the mild cognitive impairment.
Total 168 patients were recruited and randomized to receive either real or sham-LED-T. Real experimental groups were divided into three groups; CA group, VA group, CA+VA dual group. Each group received LED-T (30 min) once a day for 30 days. Each groups LED-T positioned at following locations; * CA group on the superior border of the thyroid cartilage, and anterior to the sternocleidomastoid muscle based on Korea traditional therapy called Inyoung(ST9) * VA group on the upper abdomen, spinous process of the 2nd cervical vertebra upper margin based on Korea traditional therapy called CunChu * CA+VA dual group on the CA position (ST9), and VA position (BL10) The patients were initially evaluated at baseline, immediately, 4wks after intervention. Study type : Interventional Study Phase : Not provided Study Design : Allocation : Randomized Intervention Model : Parallel Assignment Masking : Single Blind (Investigator) Primary Purpose : Treatment, intervention Condition : Mild cognitive impairment, Health subjects Intervention : * Low-level light therapy device (Peak wavelength:610nm, Power intensity: 1.7mW/cm2, Energy density: 2.0J/cm2, Skin-adhesive light-emitting probes: spot size, 1cm diameter), * Parameters : Neuroimaging assessement: fMRI, SPECT, Neuropsychological behavioral assessment: SNSB; Seoul Neuropsychological screening battery, K-MoCA, Corsi-block test, K-MBI, K-ADL, GDS, EQ-5D, Neurophysiological assessment: MEP, Motor evoked potential, Gene test(BNDF, ApoE) Study Arms * Experimental : Sham control group and real stimulation group. * In each group, total sessions of the Low-level light therapy (LED-T) was done for intervention was followed after that. * Subjects received LED-T (30 min) once a day for 30 days. * The sham control group was kept without LED-T
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
168
Peak wavelength:610nm, Power intensity: 1.7mW/cm2, Energy density: 2.0J/cm2, Skin-adhesive light-emitting probes: spot size, 1cm diameter
Pusan National University Yangsan Hospital Yangsan
Yangsan, Gyeongsangnam-do, South Korea
Samsung Medical Center
Seoul, South Korea
Neuropsychological Behavioral Assessment 1
SNSB
Time frame: Baseline, Change from Baseline SNSB at immediately after intervention , Change from Baseline SNSB at 4 weeks after intervention
Neuropsychological Behavioral Assessment 2
Corsi-block test
Time frame: Baseline, Change from Baseline Corsi-block test at immediately after intervention , Change from Baseline Corsi-block test at 4 weeks after intervention
Neuropsychological Behavioral Assessment 3
K-MoCA
Time frame: Baseline, Change from Baseline K-MoCA at immediately after intervention , Change from Baseline K-MoCA at 4 weeks after intervention
ADL assessment 1
K-MBI
Time frame: Baseline, Change from Baseline K-MBI at immediately after intervention , Change from Baseline K-MBI at 4 weeks after intervention
ADL assessment 2
K-ADL
Time frame: Baseline, Change from Baseline K-ADL at immediately after intervention , Change from Baseline K-ADL at 4 weeks after intervention
Depression assessment
GDS-SF
Time frame: Baseline, Change from Baseline GDS-SF at immediately after intervention , Change from Baseline GDS-SF at 4 weeks after intervention
Quality of Life assessment
EQ-5D
Time frame: Baseline, Change from Baseline EQ-5D at immediately after intervention , Change from Baseline EQ-5D at 4 weeks after intervention
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Gene test 1
BNDF
Time frame: Baseline, Change from Baseline BNDF at immediately after intervention , Change from Baseline BNDF at 4 weeks after intervention
Gene test 2
ApoE
Time frame: Baseline, Change from Baseline ApoE at immediately after intervention , Change from Baseline ApoE at 4 weeks after intervention
Neuroimaging Assessment 1
fMRI
Time frame: Baseline, Change from Baseline fMRI at immediately after intervention , Change from Baseline fMRI at 4 weeks after intervention
Neuroimaging Assessment 2
SPECT
Time frame: Baseline, Change from Baseline SPECT at immediately after intervention , Change from Baseline SPECT at 4 weeks after intervention