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An examination study for evaluating the effects of hearing acuity by consuming the test food

An examination study for evaluating the effects of hearing acuity by consuming the test food: a randomized, placebo-controlled, double-blind, parallel-group comparison study - An examination study for evaluating the effects of hearing acuity by consuming the test food

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000051205
Enrollment
20
Registered
2023-05-31
Start date
2023-05-31
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

Healthy Japanese subjects

Interventions

Duration: Six months Test food: Capsule containing lactic acid bacteria Administration: Take one capsule per day with water *If you forget to take the test food, take it as soon as you remember.

Sponsors

ORTHOMEDICO Inc.
Lead Sponsor
Medical Corporation Seishinkai, Takara Clinic Nerima Medical Association, Minami-machi Clinic
Collaborator

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Japanese 2. Men or women 3. Subjects aged 40 or more and less than 80 4. Subjects whose right, left, and left/right average of the pure tone average (calculated by one-fourth method) are all 24 dB or less 5. Subjects whose difference in the pure tone average (calculated by one-fourth method) between left and right ear is within 20 dB 6. Subjects whose either value of the distortion product otoacoustic emissions (DPOAE) measured at right, left, or as an average of left and right is -10 dBSPL or more at 500 Hz, 1000 Hz, or 2000 Hz, and whose value measured at right, left, or as an average of left and right is 0 dBSPL or less at 8000 Hz 7. Subjects whose minimum audible threshold of right, left, or left/right average measured at frequency of 8,000 Hz meet any of the following conditions (i~xiv) i. Men aged 40 to 49: >= 12 dB ii. Women aged 40 to 49: >= 10 dB iii. Men aged 50 to 54: >= 19 dB iv. Women aged 50 to 54: >= 14 dB v. Men aged 55 to 59: >= 23 dB vi. Women aged 55 to 59: >= 17 dB vii. Men aged 60 to 64: >= 30 dB viii. Women aged 60 to 64: >= 22 dB ix. Men aged 65 to 69: >= 38 dB x. Women aged 65 to 69: >= 30 dB xi. Men aged 70 to 74: >= 44 dB xii. Women aged 70 to 74: >= 40 dB xiii. Men aged 75 to 79: >= 53 dB xiv. Women aged 75 to 79: >= 49 dB

Exclusion criteria

Exclusion criteria: 1. Subjects who are undergoing medical treatment or have a medical history of malignant tumor, heart failure, and myocardial infarction 2. Subjects who have a pacemaker or an implantable cardioverter defibrillator (ICD) 3. Subjects currently undergoing treatment for any of the following chronic diseases: cardiac arrhythmia, liver disorder, kidney disorder, cerebrovascular disorder, rheumatism, diabetes mellitus, dyslipidemia, hypertension, neurological disease, insomnia, sleep disorder, labyrinth disease, or any other chronic diseases 4. Subjects who use or take "Foods for Specified Health Uses," "Foods with Functional Claims," or "Foods with Nutrient Function Claims" in daily 5. Subjects who are currently taking medications (including herbal medicines), internal quasi-drugs, or supplements 6. Subjects who drink to excess (average of more than about 20 g/day as absolute alcohol intake) {500 mL: a medium bottle of beer or about 1.5 cans of canned chu-hi, 180 mL: 1 go of sake or about 1.5 glasses of wine, 90 mL: half-go with shochu, 60 mL: a glass of whiskey brandy (double)} 7. Subjects who have a smoking habit 8. Subjects who have difficulty maintaining a constant lifestyle during this trial, such as those who plan to make significant changes in their lifestyle (such as diet, sleep, and exercise), work night shifts or other rotating shifts, or plan to travel abroad 9. Subjects who have not been getting enough sleep 10. Subjects who have constipation 11. Subjects who are allergic to medicines and/or the test food related products 12. Subjects who are pregnant, lactating, or planning to become pregnant during this trial 13. Subjects who suffer from COVID-19 14. Subjects who have been enrolled in other clinical trials within the last 28 days before the agreement to participate in this trial or plan to participate another trial during this trial 15. Subjects who are judged as ineligible to participate in this study by the physician

Design outcomes

Primary

MeasureTime frame
1. Minimum audible threshold at six months after consumption

Secondary

MeasureTime frame
1. Minimum audible threshold at two months and four months after consumption 2. Otoacoustic emission levels and the Japanese Version of the Hearing Handicap Inventory for Adults (HHIA) (emotional subscale, social subscale, and each item) at two, four, and six months after consumption

Countries

Japan

Contacts

Public ContactNaoko Suzuki

ORTHOMEDICO Inc. R&D Department

nao@orthomedico.jp03-3818-0610

Outcome results

None listed

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