Actively Recruiting
Light Reflection on Human Skin in Whole-Body Photobiomodulation Therapy: Clinical Trial
Led by Universidade Federal de Sao Carlos · Updated on 2025-03-12
72
Participants Needed
1
Research Sites
17 weeks
Total Duration
On this page
AI-Summary
What this Trial Is About
Researchers are studying how light reflects off human skin during whole-body photobiomodulation therapy (PBMT), which uses low-intensity red and infrared light to affect biological tissues. The trial focuses on men and women aged 18 to 30 years and aims to understand how different skin phototypes influence light reflection when the therapy is applied without skin contact. This research is led by Universidade Federal de Sao Carlos. Participants will receive whole-body photobiomodulation therapy using a device that emits red light (660 nm) and infrared light (850 nm) for a total of about 10 minutes—5 minutes for each wavelength. The light source will be held 20 cm from the skin during treatment. Participants will be grouped by skin phototype using the Fitzpatrick scale to compare light reflection across skin types. The reflection will be measured in multiple body areas including the brachial biceps, abdomen, lumbar region, front and back of the thighs, and calves. During the therapy session, light reflection will be measured using specialized sensors and a powermeter. This measurement will occur only during the light therapy irradiation on the day of the procedure. Researchers will analyze reflection data to see how skin type affects light interaction with the skin. The study involves healthy volunteers with normal to overweight BMI, and participation is expected to last for the duration of the single treatment session.
CONDITIONS
Brief Title
Light Reflection on Human Skin in Whole-Body Photobiomodulation Therapy
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Male and female
- Age between 18 and 30 years
- Body mass index (BMI) between 18.5 and 29.9 kg/m2
You will not qualify if you...
- Tattoos in the areas where light reflection will be assessed
- History of skin cancer
- Open wounds or skin lesions on mid-thigh, abdomen, biceps brachii, back, or calf
- Difficulty reporting thermal sensations
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Your Study Journey
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Duration - 1 day
Participants receive whole-body photobiomodulation therapy using a device for approximately 10 minutes, with measurements of light reflection taken during the therapy.
1 visit (in-person)
Trial Site Locations
Total: 1 location
1
Federal University of São Carlos (UFSCar)
São Carlos, São Paulo, Brazil, 13565-905
Actively Recruiting
How is the study designed?
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
NA
Model
SINGLE_GROUP
Primary Purpose
HEALTH_SERVICES_RESEARCH
Number of Arms
1
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