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Prospective, Longitudinal Study on FItness DOping in DenmarK

Prospective, Longitudinal Study of 800 Recreational Athletes With Current and Former Use of Performance and Image Enhancing Drugs (PIED), Focusing on Androgenic Anabolic Steroids (AAS) - Rigshospitalet

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05599438
Acronym
FIDO-DK/RH
Enrollment
900
Registered
2022-10-31
Start date
2022-06-14
Completion date
2040-06-01
Last updated
2024-02-15

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

Conditions

Anabolic Steroid Overdose, Cardiovascular Complication, Fitness, Illicit Drug Use, Infertility, Mental Health Issue

Keywords

Cardiovascular Disease, Metabolic syndrome, Infertility, Mortality

Brief summary

The aim of this prospective longitudinal study is to investigate the risks associated with use of anabolic steroids in fitness circles in Denmark in order to assess the scope of therapeutic need existing as a consequence of use. The objectives are: * To assess long-term complications and outcomes related to: cardiovascular disease, diabetes, gonadal disease (women and men) and psychiatric disease using data from Danish registries including addressing central questions such as whether the following characteristics play a role for development of overt disease * Characterization of illicit AAS use among men and women * Current male reproductive health * Current psychological well-being, aggressive tendencies, cognitive function and quality of life * Current cardiovascular and metabolic status The participants will undergo: * Semi-structured medical interview * Physical examinations * Questionnaires * Blood and urine sampling * Dual X-ray Absorptiometry With a subset undergoing further testing, including semen analysis, gonadotropin-releasing hormone (GnRH) and human chorionic gonadotropinm (hCG) stimulation and 82Rubidium positron emission tomography and computer tomography (PET/CT). Register-based follow-up is planned every third year until the 15th year, marking the completion of the trial. The study will include 800 participants with current or former AAS use and 100 participants (80 male; 20 female) as controls with no former or current use of AAS.

Detailed description

Anabolic steroids (AAS) are synthetic derivates of the male sexhormone testosterone. The use of AAS is a growing phenomenon and have extended beyond the elite performance and body builder communities, involving a broader populace. The continued use causes a long-term impairment of testicular function, with symptoms of including impotence, depression, infertility and an increased risk of cardiovascular disease. AAS use is a clinical challenge as many psychological symptoms worsen in case of cessation of use. As AAS is often used by young individuals, the fulminant disease is rarely found by incidental screening. To assess long-term consequences, a large cohort is in need to be studied to accurately identify the risk of disease and when to initiate treatment. Furthermore, despite the use of AAS in women is present, the scientific community has thus far not taken notice, and the consequences are unknown, but are presumed to - beyond the changes in physical appearance - to include changes in fertility, risk of type 2 diabetes and cardiovascular disease. As AAS is acquired illicitly, the knowledge on the consequences of AAS use is sparse. No international or national consensus or recommendations exist as to the how to stop AAS use, screening of disease or therapeutic option in case of manifestations of symptoms or fulminant disease. The aim of the current study is to elucidate on the consequences of use of AAS in fitness circles in Denmark to assess the scope of therapeutic need.

Interventions

OTHERNo intervention

No intervention

Sponsors

Copenhagen University Hospital at Herlev
CollaboratorOTHER
Copenhagen University Hospital - Bispebjerg and Frederikssberg, Copenhagen, Denmark
CollaboratorUNKNOWN
Centre for Preventative Doping Research at the German Sport University Cologne, Germany
CollaboratorUNKNOWN
Body Identity Clinic, Odense, Denmark
CollaboratorUNKNOWN
Caroline Michaela Kistorp
Lead SponsorOTHER

Study design

Observational model
CASE_CONTROL
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

\- Male and female recreational athletes (≥18 years of age) with current or former illicit use (\>3 months since AAS cessation) of PIEDs (e.g. AAS) for a minimum four weeks Inclusion Criteria (Controls, n = 100): \- Male (n=80) or female (n=20) recreational athletes (≥18 years of age) with NO current or former illicit use of AAS.

Exclusion criteria

* Severe psychiatric or somatic diseases which makes it impossible to give informed consent or comply with the investigatory program. * Known pregnancy.

Design outcomes

Primary

MeasureTime frameDescription
Cardiovascular composite endpoint15 yearsRegister-based composite of mortality, stroke, myocardial infarction, hospitalization due to heart failure and significant cardiovascular disease (See protocol)

Secondary

MeasureTime frameDescription
Metabolism-related composite endpoint15 yearsRegister-based composite of diagnosis related to impaired metabolic function (See protocol)
Mental health-related composite endpoint15 yearsRegister-based composite of diagnosis related to psychiatric diagnosis (See protocol)
Male fertilityBaseline comparison when substudy is completed (expected 2023)Substudy analysis on difference in motile sperm count between groups (n=280 male participants; \[current/former/controls\] 60/60/80)
Myocardial flow reserveBaseline comparison when substudy is completed (expected 2023)Substudy analysis on differences in myocardial flow reserve across groups (n=150 participants; male \[current/former/controls\]: 30/30/30; female \[current/former/current\]: 20/20/20)
hCG stimulation testBaseline comparison when substudy is completed (expected 2023)Substudy analysis on difference in response to hCG stimulation test (n=60 male participants \[former/controls\]: 30/30)
Fertility-related composite endpoint15 yearsRegister-based composite of diagnoses related to fertility and testicular/ovarian function

Other

MeasureTime frameDescription
Extensive clinical characterization of current and former users of AASBaseline comparison on entire cohort when initial completion is achieved (Date of primary completion)Analysis on group-differences in clinical characteristics between current, former users of AAS and healthy controls (Measures and further description found in protocol)
Extensive biochemical profile of current and former users of AASBaseline comparison on entire cohort when initial completion is achieved (Date of primary completion)Analysis on group-differences in biochemical measures in blood and urine between current, former users of AAS and healthy controls (Measures and further description found in protocol)
Extensive examination of the mental health of current and former users of AAS using questionnairesBaseline comparison on entire cohort when initial completion is achieved (Date of primary completion)Analysis on group-differences in response to questionnaires between current, former users of AAS and healthy controls (Questionnaires and further description found in protocol)
Anthropometry of the body composition of current and former users of AASBaseline comparison on entire cohort when initial completion is achieved (Date of primary completion)Analysis on group-differences in lean and fat mass evaluated by Dual X-ray Absorptiometry

Countries

Denmark

Contacts

Primary ContactCaroline M Kistorp, Professor
caroline.michaela.kistorp@regionh.dk004535459642
Backup ContactYeliz Bulut, MD
yeliz.bulut@regionh.dk004535458079

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026