Light transmission and thermal impact of different photobiomodulation therapy devices on the Achilles tendon of human volunteers: A comparative study

IF 2.6 3区医学 Q2 ONCOLOGY

Photodiagnosis and Photodynamic Therapy Pub Date : 2025-09-25 DOI:10.1016/j.pdpdt.2025.105234

Ernesto Cesar Pinto Leal-Junior , Fernando Hess , Luana Barbosa Dias , Matheus Marinho Aguiar Lino , Caroline dos Santos Monteiro Machado , Paulo Henrique Gusmão Nogueira Martins , Heliodora Leão Casalechi , Shaiane Silva Tomazoni

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引用次数: 0

Abstract

Background

The relationship between light transmission and thermal effects of different photobiomodulation therapy devices on deeper tissues remains unclear.

Aim

To compare light transmission and thermal effects of three photobiomodulation therapy devices on the in situ Achilles tendon of healthy adults.

Methods

A clinical exploratory study was conducted. Eighteen male volunteers (n = 36 tendons) underwent irradiation with three photobiomodulation therapy devices: a high-powered single-wavelength (HPSW, 9,000 mW), a low-powered single-wavelength (LPsW, 100 mW), and a low-powered multi-wavelength (LPmW, 450 mW). Tissue thickness, transmitted power, skin temperature, and thermal discomfort were assessed.

Results

Achilles tendon thickness did not differ across conditions (p > 0.05). The LPmW device exhibited the highest transmitted power (141.1 μW ± 33.5) compared with the HPSW (39.7 μW ± 27.0) and LPsW (23.9 μW ± 10.5) devices (p < 0.0001), as well as the lowest increase in skin temperature (p > 0.05). The HPSW device induced the greatest thermal discomfort (p < 0.0001).

Conclusion

These findings suggest that the LPmW device delivers greater transmitted power while causing a smaller increase in skin temperature compared with the LPsW and HPSW devices in the resting human Achilles tendon, making it a potentially safer and more efficient option for deeper tissue treatment.

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不同光生物调节装置对人类志愿者跟腱的光传输和热影响的比较研究。

背景：不同光生物调节装置对深层组织的光传输与热效应之间的关系尚不清楚。目的：比较三种光生物调节装置对健康成人跟腱原位损伤的透光性和热效应。方法：在XXX进行临床探索性研究。18名男性志愿者（n=36根肌腱）接受了三种光生物调节治疗装置的照射：高功率单波长（HPSW, 9,000 mW），低功率单波长（LPsW, 100 mW）和低功率多波长（LPmW, 450 mW）。评估组织厚度、透射功率、皮肤温度和热不适。结果：不同情况下跟腱厚度差异无统计学意义（p < 0.05）。与HPSW（39.7±27.0）和LPsW（23.9±10.5）相比，LPmW器件的透射功率最高（141.1±33.5），皮肤温度升高最低（p < 0.05）。HPSW装置引起的热不适最大（p < 0.0001）。结论：这些研究结果表明，与LPsW和HPSW装置相比，LPmW装置在静止人体跟腱中提供更大的传输功率，同时引起更小的皮肤温度升高，使其成为更安全、更有效的深层组织治疗选择。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Photodiagnosis and Photodynamic Therapy ONCOLOGY-

CiteScore

5.80

自引率

24.20%

发文量

509

审稿时长

50 days

期刊介绍： Photodiagnosis and Photodynamic Therapy is an international journal for the dissemination of scientific knowledge and clinical developments of Photodiagnosis and Photodynamic Therapy in all medical specialties. The journal publishes original articles, review articles, case presentations, "how-to-do-it" articles, Letters to the Editor, short communications and relevant images with short descriptions. All submitted material is subject to a strict peer-review process.