Who are we?


Signup for

Online registration

Log in to register
your trial

Search a trial




van CCT (UK)

van CCT (UK)

Erythropoetine effects on cycling performance.

- candidate number23605
- NTR NumberNTR5643
- ISRCTNISRCTN no longer applicable
- Date ISRCTN created
- date ISRCTN requested
- Date Registered NTR13-jan-2016
- Secondary IDsCHDR1514 
- Public TitleErythropoetine effects on cycling performance.
- Scientific TitleA randomized, double-blind, placebo-controlled study to investigate the effects of an 8-week recombinant human erythropoietin (NeoRecormon) treatment on well-trained cyclists and their cycling performance.
- hypothesisTreatment with rhEPO has no effects on performance parameters measures by exercise tests.
- Healt Condition(s) or Problem(s) studiedCycling, Maximal exercise capacity
- Inclusion criteria1. Well-trained (as determined by cycling history and maximal power output >4 W/kg) male subjects, 18 to 45 years old (inclusive)
2. Subjects must be healthy / medically stable on the basis of clinical laboratory tests, medical history, vital signs, and 12-lead ECG performed at screening, including exercise ECG.
3. Each subject must sign an informed consent form
- Exclusion criteria1. Any clinically significant abnormality, as determined by medical history taking and physical examinations, obtained during the screening visit that in the opinion of the investigator would interfere with the study objectives or compromise subject safety.
2. Unacceptable known concomitant diagnoses or diseases at baseline, e.g., known cardiovascular, pulmonary, muscle, metabolic or haematological disease, renal or liver dysfunction, ECG or laboratory abnormalities, etc.
3. Unacceptable concomitant medications at baseline, e.g., drugs known or likely to interact with the study drugs or study assessments.
4. Unacceptable potential cycling performance enhancing medications at baseline, e.g. Erythropoiesis-stimulating agents, Anabolic Androgenic Steroids, Growth Hormone, Insulin, IGF-I and Beta-Adrenergic Agents or methods, e.g. altitude tents.
5. Blood transfusion in the past three months.
6. Loss or donation of blood over 500 mL within three months.
7. Participation in a clinical trial within 90 days of screening or more than 4 times in the previous year.
8. Known hypersensitivity to the treatment or drugs of the same class, or any of their excipients.
9. Any known factor, condition, or disease that might interfere with treatment compliance, study conduct or interpretation of the results such as drug or alcohol dependence or psychiatric disease.
10. Positive urine drug test at screening, during visits at the clinical research unit and during the competition.
11. Positive alcohol breath test at screening, during visits at the clinical research unit and during the competition.
12. Haemoglobin (Hb) concentration > 9.8 mmol/l at screening.
13. Hb concentration < 8 mmol/l at screening.
14. Haematocrit (Ht) ≥ 48% at screening.
15. Ferritin < 80 ng/mL
16. Being subject to WADA’s anti-doping rules, meaning being a member of an official cycling union or other sports union for competition (such as the KNWU) or participating in official competition during the study.
17. Positive results from serology at screening (except for vaccinated subjects or subjects with past but resolved hepatitis)
18. Previous history of fainting, collapse, syncope, orthostatic hypotension, or vasovagal reactions.
19. Any circumstances or conditions, which, in the opinion of the investigator, may affect full participation in the study or compliance with the protocol.
- mec approval receivedyes
- multicenter trialno
- randomisedyes
- masking/blindingDouble
- controlPlacebo
- groupParallel
- Type2 or more arms, randomized
- Studytypeintervention
- planned startdate 4-jan-2016
- planned closingdate31-mei-2016
- Target number of participants48
- InterventionsWeekly subcutaneous doses of Neorecormon (5000 IU, or adjusted to reach the desired Hemoglobin increase, maximum dose is 10.000 IU). Additionally, all subject will receive Vitamin C supplementation.
- Primary outcomeExercise tests
All subjects will breathe during the exercise test through a facemask that will be connected to an oxymeter to collect inspired and expired gasses for analyzing:
- Oxygen consumption, VO2 (L/min)
- Carbon dioxide production, VCO2 (L/min)
- Respiratory minute ventilation, VE (L/min)
- Tidal volume, Vt (L)
- Respiratory frequency, Rf
- Maximal oxygen consumption, VO2,max (ml kg-1 min-1)
During the exercise tests blood will be collected at predetermined stages to measure:
- Lactate levels
- Tissue plasminogen activator
- Creatinine phosphokinase
- C-reactive protein levels
VO2 and VCO2 will be used to calculate:
- Ventilatory equivalent for oxygen (VE/VO2), eqVO2
- Ventilatory equivalent for carbon dioxide (VE/VCO2), eqVCO2 these values will be used to determine:
- Ventilatory threshold 1, VT1
- Ventilatory threshold 2, VT2
Physiological parameters that will be determined at VT1 and VT2:
- Oxygen consumption, VO2 (L/min)
- Oxygen consumption per kg, VO2 (L/min/kg)
- Percentage of maximal oxygen consumption, %VO2max (L/min)
- Power output, P (J/s)
- Power output per kg, P (J/s/kg)
Physiological parameters that will be determined at maximal effort:
- Maximal oxygen consumption, VO2max (L/min)
- Maximal oxygen consumption per kg, VO2max (L/min/kg)
- Maximal power output, Pmax (J/s)
- Maximal power output per kg, Pmax (J/s/kg)
- Lactate values
Other determinations:
- Lactate threshold 1, LT1
- Lactate threshold 2, LT2
- Cycling economy, CE (W L-1 min-1)
- Gross efficiency, GE (%)
- Heart rate (bpm)
- Systolic blood pressure (mmHg)
- Diastolic blood pressure (mmHg)
Maximal and submaximal exercise parameters that will be measured and calculated during the competition:
- Power (W)
- Heart rate (bpm)
- Systolic blood pressure (mmHg)
- Diastolic blood pressure (mmHg)
- Secondary outcomeSafety markers:
Monitoring vital signs
o Pulse Rate (bpm)
o Systolic blood pressure (mmHg)
o Diastolic blood pressure (mmHg)
o Temperature measurements (ºC)
Electrocardiogram (ECG)
o Heart Rate (HR) (bpm), PR, QRS, QT, QTcB, QTcF
Clinical Laboratory Assessments
o Haematology
Ht must be <52o/o.
o Chemistry
o Urinalysis
o Coagulation (F1+2, D-Dimer, bTG, PF4, P-selectin, E-selectin, thrombomodulin, TXB2)
Doping detection:
Detection (positive/negative test) of EPO in urine samples from subjects
- TimepointsEfficacy and Biological Passport: Every two weeks
Safety: Continuously and every week at dosing, every 2 weeks at exercise tests.
Doping: at several timepoints
- Trial web siteN/A
- statusplanned
- Sponsor/Initiator Centre for Human Drug Research
- Funding
(Source(s) of Monetary or Material Support)
Centre for Human Drug Research
- Publications
- Brief summarySubjects will be recruited in The Netherlands.
- Main changes (audit trail)
- RECORD13-jan-2016 - 28-feb-2016

  • Indien u gegevens wilt toevoegen of veranderen, kunt u een mail sturen naar