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Light Reflection on Human Skin in Whole-Body Photobiomodulation Therapy

NCT06866522 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 72

Last updated 2025-03-12

No results posted yet for this study

Summary

Photobiomodulation therapy (PBMT) is based on exposing biological tissues to low-intensity light, with effects depending on the light-tissue interaction. When irradiated without skin contact, part of the incident light is reflected and lost. In this context, the amount of reflected light in PBMT applied without skin contact, as well as the influence of skin phototype, has not yet been established. Objective: To quantify the reflection of light from PBMT on the skin of men and women aged 18 to 30 years, considering skin phototypes. Methodology: Participants will be divided into three groups based on skin phototype (Group 1: phototypes I and II; Group 2: phototypes III and IV; Group 3: phototypes V and VI) and sex. They will be subjected to whole-body PBMT with red light (660 nm; 31.85±3.85 mW; 45.50±5.07 mW/cm²) and infrared light (850 nm; 25.29±2.99 mW; 36.13±4.27 mW/cm²) at 20 cm from the light-emitting source, with measurement of light reflection in the regions of the brachial biceps, abdomen, lumbar, anterior and posterior thigh, and calf using a power and energy analyzer (powermeter PM100D and sensor S130C, 0.7 cm²). Data will be analyzed for normality and groups were compared with a significance level of 5%

Conditions

  • Photobiomodulation Therapy
  • Phototype

Interventions

DEVICE

Whole-body Photobiomodulation Therapy

Whole-body Photobiomodulation Therapy applied for approximately 10 minutes, being 5 minutes with the red wavelength and 5 minutes with the infrared wavelength.

Sponsors & Collaborators

  • Universidade Federal de Sao Carlos

    lead OTHER

Study Design

Allocation
NA
Purpose
HEALTH_SERVICES_RESEARCH
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
30 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2023-11-27
Primary Completion
2025-03-20
Completion
2025-07-20

Countries

  • Brazil

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06866522 on ClinicalTrials.gov