Far-Infrared Socks for Neuropathic Pain and Nerve Function in Diabetic Patients

NCT ID: NCT06880484

Last Updated: 2025-03-19

Basic Information

• Recruitment Status: ENROLLING_BY_INVITATION
• Clinical Phase: NA
• Total Enrollment: 50 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2025-02-02
• Study Completion Date: 2026-06-30

Brief Summary

This study aims to evaluate the effectiveness of far-infrared radiation (FIR) emitting socks in improving neuropathic pain, nerve conduction, and quality of life in patients with diabetic peripheral neuropathy (DPN). It is the first comprehensive study in Turkey investigating FIR technology for DPN treatment and offers an alternative approach to traditional methods.The study will be conducted at Erciyes University Gevher Nesibe Hospital between February 2025 and June 2026 as a randomized controlled trial (RCT) with a triple-blind design. Participants will be assigned to either the FIR socks group or the placebo group, with both groups receiving two pairs of socks to wear daily. Assessments will include the Leeds Assessment of Neuropathic Symptoms and Signs (LANSS) Scale, the Neuropathic Pain Impact on Quality of Life (NePIQoL) questionnaire, and the Visual Analog Scale (VAS) for patient-reported outcomes. Electroneuromyography (ENMG) testing will also be performed before and after the intervention to assess nerve function.

This research is expected to provide clinical evidence on FIR socks as a non-pharmacological treatment for neuropathic pain, contributing to improved patient care and the development of innovative medical technologies in Turkey.

Conditions

Diabetic Peripheral Neuropathy (DPN)

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: SUPPORTIVE_CARE
• Blinding Strategy: TRIPLE

Study Groups

Experimental Group

Patients will be selected from those attending endocrinology and neurology clinics or hospitalized and meeting the inclusion criteria. Participants will complete the Patient Information Form, LANSS Scale, and NePIQoL forms in a quiet room in the endocrinology ward. The Ankle Brachial Index will be evaluated to exclude peripheral arterial disease. If ENMG and lab findings are unavailable, patients will be referred for necessary tests. They will receive two pairs of FIR socks to be worn at least 8 hours daily, along with usage training. Contact information will be collected. Participants will be called three times to assess compliance and comfort via VAS. After three months, they will return for a final evaluation, including an ENMG scan by neurology specialists, and complete the LANSS Scale and NePIQoL forms again.

Group Type: EXPERIMENTAL

Far-Infrared Radiation (FIR) Socks

Intervention Type: DEVICE

Participants in the experimental group will receive two pairs of Far-Infrared Radiation (FIR) emitting socks, designed to be worn for at least 8 hours per day over a 3-month period. These socks utilize FIR technology, which is hypothesized to improve circulation, reduce neuropathic pain, and enhance quality of life in patients with diabetic peripheral neuropathy (DPN). Participants will be educated on the proper use of the socks, provided with a usage protocol, and monitored for adherence via three follow-up phone calls assessing compliance and comfort using the Visual Analog Scale (VAS). At the end of the study, participants will undergo a follow-up Electroneuromyography (ENMG) evaluation, and pain and quality of life will be reassessed using the LANSS Scale and NePIQoL forms.

Placebo Socks Group

Placebo group patients will be selected from those attending endocrinology and neurology clinics or hospitalized and meeting inclusion criteria. Participants will complete the Patient Information Form, LANSS Scale, and NePIQoL forms in a quiet room. The Ankle Brachial Index will be evaluated to exclude peripheral arterial disease. If ENMG and lab findings are unavailable, patients will be referred for necessary tests. They will receive two pairs of non-FIR socks to be worn at least 8 hours daily, along with usage training. Contact information will be collected. Participants will be called three times to assess compliance and comfort via VAS. After three months, they will return for a final evaluation, including an ENMG scan by neurology specialists, and complete the LANSS Scale and NePIQoL forms again.

Group Type: PLACEBO_COMPARATOR

Placebo Socks

Intervention Type: DEVICE

Participants in the placebo group will receive two pairs of non-FIR socks, which are visually identical to the FIR socks but lack FIR-emitting properties. They will follow the same 8-hour daily usage protocol for 3 months and receive the same education on sock usage. Compliance and comfort will be monitored through three follow-up phone calls, and assessments will be conducted using the VAS, LANSS Scale, and NePIQoL forms. At the end of the study, participants will undergo a final ENMG evaluation.This study aims to determine the effect of FIR socks on neuropathic pain, nerve conduction, and quality of life, using both subjective (pain scales) and objective (ENMG) measures.

Interventions

Far-Infrared Radiation (FIR) Socks

Participants in the experimental group will receive two pairs of Far-Infrared Radiation (FIR) emitting socks, designed to be worn for at least 8 hours per day over a 3-month period. These socks utilize FIR technology, which is hypothesized to improve circulation, reduce neuropathic pain, and enhance quality of life in patients with diabetic peripheral neuropathy (DPN). Participants will be educated on the proper use of the socks, provided with a usage protocol, and monitored for adherence via three follow-up phone calls assessing compliance and comfort using the Visual Analog Scale (VAS). At the end of the study, participants will undergo a follow-up Electroneuromyography (ENMG) evaluation, and pain and quality of life will be reassessed using the LANSS Scale and NePIQoL forms.

Intervention Type: DEVICE

Placebo Socks

Participants in the placebo group will receive two pairs of non-FIR socks, which are visually identical to the FIR socks but lack FIR-emitting properties. They will follow the same 8-hour daily usage protocol for 3 months and receive the same education on sock usage. Compliance and comfort will be monitored through three follow-up phone calls, and assessments will be conducted using the VAS, LANSS Scale, and NePIQoL forms. At the end of the study, participants will undergo a final ENMG evaluation.This study aims to determine the effect of FIR socks on neuropathic pain, nerve conduction, and quality of life, using both subjective (pain scales) and objective (ENMG) measures.

Intervention Type: DEVICE

Other Intervention Names

Far-Infrared Therapy Socks; Non-FIR Socks

Eligibility Criteria

Inclusion Criteria

• Diagnosed with diabetic peripheral neuropathy (DPN) with mild to moderate severity based on clinical evaluation.
• Oriented to person, place, and time (cognitively intact).
• Residing in Kayseri and receiving treatment in the city.
• HbA1C level below 8.5% during the study period.
• Non-smoker for at least 6 months.
• Not using neuropathic pain medication for at least 3 months before enrollment.
• Body Mass Index (BMI) between 25 - 35.
• Able to be contacted by phone for follow-up.
• Willing to participate and provide informed consent.

Exclusion Criteria

• Presence of diabetic foot ulcers.
• Non-mobilized individuals (unable to walk independently).
• Severe peripheral artery disease (Ankle Brachial Index (ABI) < 0.4).
• Liver failure or renal failure (dialysis patients).
• Coronary artery disease.
• Candidates for surgery during the intervention period.
• Lower extremity arthroplasty or orthosis indication during the intervention period.
• Neurological or cognitive impairments (e.g., dementia, Alzheimer's disease).
• Receiving non-pharmacological treatment for diabetic peripheral neuropathy (DPN).
• Chronic alcohol or substance use.
• Severe anemia, vitamin B12 deficiency, or iron deficiency anemia.
• Recent changes in diabetes medication or newly diagnosed with diabetes.
• Neurological, cardiovascular, or orthopedic damage affecting the lower extremities.
• Use of cytotoxic or immunosuppressive agents or history of radiation therapy.
• Pregnant, breastfeeding, or attempting to conceive.
• Receiving physiotherapy at any point during the study period.

• Minimum Eligible Age: 19 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

TC Erciyes University

OTHER

Sponsor Role: lead

Responsible Party

Harun İN

Harun İn, MSc, Principal Investigator

Responsibility Role: PRINCIPAL_INVESTIGATOR

Locations

Erciyes Üniversitesi

Talas, Kayseri, Turkey (Türkiye)

Countries

Turkey (Türkiye)

Other Identifiers

1782/1762

Identifier Type: OTHER

Identifier Source: secondary_id

1782/1762

Identifier Type: -

Identifier Source: org_study_id