Ignite Creation Date:
2024-05-05 @ 4:49 PM
Last Modification Date:
2024-10-26 @ 9:25 AM
Study NCT ID:
NCT00327366
Status:
COMPLETED
Last Update Posted:
2009-10-19
First Post:
2006-05-17
Brief Title:
Effect of Bright Light on Sex Hormones and Ovulation in Humans
Sponsor:
Russian Academy of Medical Sciences
Organization:
Russian Academy of Medical Sciences
Study Overview
Official Title:
None
Status:
COMPLETED
Status Verified Date:
2009-10
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
The study investigated whether bright artificial light may influence menstrual cycle and ovulation conclusively and what underlying hormonal changes for this effect are
Detailed Description:
Several studies have shown a shortening of the menstrual cycle following light therapy in women with abnormally long menstrual cycles or with winter depression which suggests that bright light may influence sex hormones and ovulation The study was designed to investigate this possibility Twenty-two women with slightly lengthened menstrual cycles and without clinically evident endocrine abnormalities completed a study lasting for two menstrual cycles separated by an off-protocol episode of at least 1 menstrual cycle Bright light therapy was administered for a week at home during one experimental cycle and dim light during another cycle placebo-controlled crossover counter-balanced order Daytime blood sampling and ultrasound scan were performed before and after a week of light therapy on the 7th and 14th days after menstruation onset Ultrasound examination was repeated further to document ovulation Serum was assayed for thyroid-stimulating hormone prolactin luteinizing hormone follicle-stimulating hormone and estradiol The preliminary results were reported at the SLTBR meeting in June 2005
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None