none
Conditions
Interventions
playing an environmental sound with high frequency band.
playing an environmental sound without high frequency band.
playing no sound
Sponsors
Centan Inc.
Eligibility
Sex/Gender
Male
Inclusion criteria
Inclusion criteria: Those who reports intact auditory and visual acuity could participate in this study. They are all 20's males and female is not supposed to be included in this study because cortisol would vary with menstrual cycle and it is difficult to control it.
Exclusion criteria
Exclusion criteria: We set exclusion criteria as follows. 1. Those who would not follow our infection prevention. 2. Those who have been COVID positive or have COVID positive housemate within 2 weeks. 3. Those who go to the hospital or take medication for the purpose of treating illnesses and injuries other than allergies. 4. Those who have or have a history of mental illness or cranial nerve illness. 5. Those who have heart / circulatory system (myocardial infarction, angina, aortic aneurysm, etc.), hyperglycemia, hypertension (or similar, upper blood pressure is 140 mmHg or higher, lower blood pressure is 90 mmHg or higher) or have a history of those. 6. Those who have or have a history of respiratory system (asthma, etc.) 7. Those who have or have f a history of digestive system (hepatitis, etc.) 8. Those who have been pointed out to have depression, hypertension, hyperglycemia, or abnormal electrocardiogram in a medical examination or a hospital examination. 9. Those who smoke habitually. 10. Those who take drugs habitually. 11. Those who consume excessive alcohol. 12. Those who are taking excessive caffeine. 13. Those who are claustrophobic or who may experience strong anxiety or fear in tight or dark spaces. 14. Those who have bleeding wounds / inflammation, blisters, or blisters on the chest or abdomen. 15. Those who are excessively obese or lean. 16. Those with diabetes, coronary heart disease, cancer, or chronic obstructive pulmonary disease. 17. Those who have a profession that involves night shifts. 18. Those who are in poor health, those who are physically unhealthy.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| State-Trait Anxiety Inventory Stress level by visual analogue scale Heart rate(HR) Heart rate variability(HRV) Alpha-amylase in saliva | — |
Countries
Japan
Contacts
Public ContactHiroki Moriya
Centan Inc. Research and Development
Outcome results
None listed