Effects of Nightshift Work and Sleep Disturbances on Erectile Function


We aim to observe the unwanted effects of nightshift work and short term insomnia on erectile function of men aged between 25 to 60 years. We will also compare the levels of serum testosterone in the target group and compare it with the ones who don't work in hightshifts.

Full Title of Study: “Effects of Nightshift Work and Sleep Disturbances on Erectile Function, Serum Testosterone Levels, Nocturia”

Study Type

  • Study Type: Observational [Patient Registry]
  • Study Design
    • Time Perspective: Cross-Sectional
  • Study Primary Completion Date: May 20, 2021


  • Diagnostic Test: IIEF-5
    • IIEF-15 form will be filled out by all participants

Arms, Groups and Cohorts

  • Nightshift workers
  • Non-nightshift workers

Clinical Trial Outcome Measures

Primary Measures

  • Erectile dysfunction
    • Time Frame: 3-6 months
    • Decreased scores of IIEF-5

Participating in This Clinical Trial

Inclusion Criteria

  • Suffering from erectile dysfunction – Mainly psychogenic ED – Employed Exclusion Criteria:

  • Patients with major organic causes erectile dysfunction (Radical pelvic surgery/radiation therapy, uncontrolled diabetis mellitus, uncontrolled hypertension, New York Heart Association Class 3-4 heart failure, acute coronary syndrome within 3 months, dyslipidemia) – NEET(Not in employment, education, training) patients

Gender Eligibility: Male

Minimum Age: 25 Years

Maximum Age: 60 Years

Are Healthy Volunteers Accepted: Accepts Healthy Volunteers

Investigator Details

  • Lead Sponsor
    • Istanbul Medipol University Hospital
  • Collaborator
    • Prof. Dr. Cemil Tasc─▒oglu Education and Research Hospital Organization
  • Provider of Information About this Clinical Study
    • Principal Investigator: gokhan calik, Assistant professor – Istanbul Medipol University Hospital
  • Overall Contact(s)
    • Gokhan Calik, Asst.Prof., +905362666604, gcalik@medipol.edu.tr

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