PKU Third Hospital Research: 78.3% Measured Outcome

Published May 20, 2026 - 6 min read - XIHE Research Division

Abstract

A published study at Peking University Third Hospital — one of China’s leading research institutions — observed that XIHE’s graphene-based 5-15um (peaking at 9.4um) far-infrared resonance technology was associated with a 78.3% measured comfort outcome in study participants with musculoskeletal conditions. The study reported changes across three domains: comfort scores, microcirculation parameters, and functional mobility indices.

Metric	Value
Measured Comfort Outcome	78.3%
Reported Emission Depth	3 - 5 cm
Application Protocol	8 weeks

Study at a Glance

Field	Value
Participants	Musculoskeletal discomfort cohort
Duration	8 weeks
Technology	XIHE 5-15um (peaking at 9.4um) graphene FIR
Measured Comfort Outcome	78.3%
Microcirculation Change	64.9%
Follow-Up	4 weeks
Institution	Peking University Third Hospital

Background

Musculoskeletal discomfort affects a large global population. While various interventions exist, non-invasive physical modalities — particularly far-infrared technology — have drawn increasing research interest. However, most commercially available FIR devices lack precise wavelength control, limiting consistency across studies.

XIHE’s technology addresses this variable through precision-engineered 5-15um (peaking at 9.4um) emission — a wavelength range at which research suggests cellular water molecules achieve strong absorption. This study was designed to evaluate the measured outcomes of this approach under controlled conditions.

Study Design

The study enrolled participants with musculoskeletal discomfort across lumbar, cervical, and knee regions. Participants received standardized XIHE graphene far-infrared application sessions over an 8-week protocol, with primary endpoints measuring Visual Analog Scale (VAS) comfort scores, microcirculation parameters, and functional mobility indices.

“The consistency of the 5-15um (peaking at 9.4um) wavelength delivery — session after session — was the key differentiator from conventional infrared devices we have tested previously.”

Key Findings

Comfort Improvement: 78.3% of participants reported a meaningful change in VAS comfort scores (>=2 points). Results were sustained at 4-week follow-up, suggesting lasting physiological adaptation rather than transient effects.

Microcirculation: Capillary blood flow velocity was observed to change by 64.9% in application areas, as measured by laser Doppler flowmetry. This supports the proposed mechanism of far-infrared energy being absorbed within superficial tissue layers and initiating microcirculatory responses through circulation and cellular signaling mechanisms.

Functional Mobility: Participants demonstrated measurable improvement in range-of-motion and daily activity scores. The non-thermal nature of the resonance mechanism allowed for comfortable, extended sessions.

Research Significance

These findings contribute to the growing body of evidence on XIHE’s 5-15um (peaking at 9.4um) graphene far-infrared technology as a validated, non-pharmaceutical comfort support technology suitable for integration into physiotherapy environments, recovery centers, and professional wellness programs. The data supports application as both a standalone comfort modality and alongside other wellness approaches.

The study is part of XIHE’s broader research program, which now spans 18 SCI-indexed publications and 8 randomized controlled trials across multiple research domains.

References

Clinical Trial Protocol PKU-CT-2026-014 - Peking University Third Hospital, Department of Rehabilitation Medicine. Full study data and methodology available to clinical partners upon request.