Verification of the Effects of Wearing Clothing Made from Black Silica Materials on Physical and Mental Health

Physiological and Psychological Effects of Wearing Black Silica-Infused Clothing - BS-Cloth Study

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000058966

Enrollment

Registered

2025-09-02

Start date

2025-09-02

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cold sensitivity

Interventions

Wear a set of clothing made of fiber containing black silica (BS Fine). Participants will be asked to wear the clothing as much as possible in daily life for a period of three months during the winte

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: (3) Healthy men and women aged 30 to 60 years (2) Individuals who are able to wear clothing made of black silica-containing fabric during the study period (1) Individuals who provide written informed consent to participate in the study

Exclusion criteria

Exclusion criteria: (1) Individuals who are unable to provide informed consent (2) Individuals with a history or current diagnosis of dementia, psychiatric disorders, or neurological diseases (3) Individuals with severe visual or hearing impairments (4) Individuals who are currently participating in another clinical study (5) Individuals who are otherwise judged to be unsuitable for participation in this study

Design outcomes

Primary

Measure	Time frame
1. Immune function, inflammation, and cardiovascular-metabolic indicators Immune cells (NK cells, T cells, B cells, etc.) Plasma proteome analysis (737 proteins related to inflammation and cardiovascular-metabolic function) 2. Psychological questionnaires Quality of life: WHO QOL-26 Mood states: Profile of Mood States 2 (POMS2) Stress level: Perceived Stress Scale (PSS) Depressive tendency: Kessler 10 (K10; psychological distress screening scale) 3. Cognitive function tests Processing speed and working memory: Trail Making Test A/B (TMT-A/B) Sustained attention: 10-min Psychomotor Vigilance Task (PVT) Executive function: Stroop task, Flanker task, n-back task 4. Fatigue assessment Fatigue and recovery: Visual Analogue Scale (VAS) Fatigue accumulation: Cumulative Fatigue Symptoms Index, Self-diagnostic Checklist for Worker Fatigue Accumulation, Japanese version of Checklist Individual Strength Questionnaire (CIS-20) 5. Physical and motor function Anthropometry: height, weight, body composition Motor performance tests: step-up test, two-step test, single-leg stance with eyes open/closed, vertical jump 6. Femtech-related assessments (female participants) Premenstrual dysphoric disorder: PMDD Rating Scale Premenstrual syndrome symptoms: Shortened Daily Record of Severity of Problems (DRSP) 7. Sleep evaluation Pittsburgh Sleep Quality Index (PSQI) OSA Sleep Inventory MA version 8. Clothing usage survey Questionnaire on clothing usage status	—

Measure

Time frame

1. Immune function, inflammation, and cardiovascular-metabolic indicators Immune cells (NK cells, T cells, B cells, etc.) Plasma proteome analysis (737 proteins related to inflammation and cardiovascular-metabolic function) 2. Psychological questionnaires Quality of life: WHO QOL-26 Mood states: Profile of Mood States 2 (POMS2) Stress level: Perceived Stress Scale (PSS) Depressive tendency: Kessler 10 (K10; psychological distress screening scale) 3. Cognitive function tests Processing speed and working memory: Trail Making Test A/B (TMT-A/B) Sustained attention: 10-min Psychomotor Vigilance Task (PVT) Executive function: Stroop task, Flanker task, n-back task 4. Fatigue assessment Fatigue and recovery: Visual Analogue Scale (VAS) Fatigue accumulation: Cumulative Fatigue Symptoms Index, Self-diagnostic Checklist for Worker Fatigue Accumulation, Japanese version of Checklist Individual Strength Questionnaire (CIS-20) 5. Physical and motor function Anthropometry: height, weight, body composition Motor performance tests: step-up test, two-step test, single-leg stance with eyes open/closed, vertical jump 6. Femtech-related assessments (female participants) Premenstrual dysphoric disorder: PMDD Rating Scale Premenstrual syndrome symptoms: Shortened Daily Record of Severity of Problems (DRSP) 7. Sleep evaluation Pittsburgh Sleep Quality Index (PSQI) OSA Sleep Inventory MA version 8. Clothing usage survey Questionnaire on clothing usage status

—

Countries

Japan

Contacts

Public ContactTakuji Kawamura

Tohoku University Smart Aging Research Center

takuji.kawamura.b8@tohoku.ac.jp022-717-8824

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026