Potential Contribution to Maintaining Autonomic Nervous Function and Reducing Fatigue Suggested

MTG Co., Ltd. (Headquarters: Nagoya City, Aichi Prefecture; President and CEO: Takeshi Matsushita) announced the effects of its proprietary blood-flow-enhancing fiber VITALTECH® on fatigue symptoms in collaboration with Professor Takashi Mizuno of the Center for Health Sciences Innovation, Osaka Metropolitan University, at the 22nd Annual Meeting and Academic Conference of the Japan Society of Fatigue Science (June 6–7, 2026).

Wearing innerwear made with VITALTECH® for four weeks may contribute to maintaining autonomic nervous function and reducing fatigue before bedtime, the study suggests. Moving forward, MTG will continue its efforts with Professor Mizuno toward publishing the findings in international academic journals.

Background

A 2026 nationwide survey conducted by the Japan Recovery Association on fatigue conditions, targeting 100,000 individuals, reported that 77.4% of Japanese citizens (aged 20–79) answered they feel 'tired,' with 39.9% experiencing fatigue at high frequency※1, revealing the widespread nature of fatigue among the Japanese population.

Home-use far-infrared blood-flow-enhancing garments are general medical devices in clothing form, designed with the purpose of improving fatigue symptoms through the blood-flow-enhancing effects of far-infrared radiation. This study therefore evaluated the impact of wearing innerwear made with the blood-flow-enhancing fiber VITALTECH® for four weeks on fatigue symptoms.

※1: Japan Recovery Association, 'Japan's Fatigue Status 2026'

Academic Presentation

Title: Effects of Wearing Far-Infrared Blood-Flow-Enhancing Garments on Fatigue Symptoms Presenters: Yudai Toyama1), Takao Muto1), Minami Makii1), Ryoko Tsutsui2), Mariko Nakatani2), KyoSuke Watanabe2), Takashi Mizuno2) 1) MTG Co., Ltd., 2) Center for Health Sciences Innovation, Osaka Metropolitan University

Study Overview

Test Items: Specially processed innerwear (VITALTECH® group) / Non-processed innerwear (placebo group) Study Participants: Healthy men and women experiencing fatigue lasting over one month

Study Method: A four-week, double-blind, parallel-group comparative trial was conducted, dividing participants into the VITALTECH® group and placebo group.

[Japan Society of Fatigue Science]

A general incorporated association established to advance academic research and improve healthcare quality by promoting research presentations, knowledge exchange, and mutual collaboration among members on all aspects of fatigue—including physiological fatigue, pathological fatigue (physical and mental), chronic fatigue, and occupational fatigue. The 22nd Annual Meeting and Academic Conference was held under the theme 'Rebuilding the Foundation of Fatigue Research and Clinical Practice in the Land of Restoration.'

Society Website: https://j-fatigue.jp/ Conference Website: https://ds.cc.yamaguchi-u.ac.jp/~jsfs22/

About the Blood-Flow-Enhancing Fiber VITALTECH®

'VITALTECH®' is MTG's proprietary fiber technology. By uniquely blending eight types of finely crushed natural minerals into the fiber, it successfully delivers recovery benefits even in fabrics less than 1mm thick.