- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02704546
Methylphenidate (Ritalin®) Effect During Exposure to Exercise and Heat Stress in ADD/ADHD Treated Patients
March 9, 2016 updated by: Sheba Medical Center
The Effect of the Drug Methylphenidate on Physiological Stress and Function During Exposure to Exercise and Heat Stress in ADD/ADHD Treated Patients
The purpose of this study is to explore the possible effects of MPH use on physiological functions among ADHD\ADD patients, by performing a set of physical trials to assess aerobic and anaerobic capacity, to characterize the tendency for muscle break down while performing monitored moderate physical effort and to assess the physiological strain while performing moderate exercise in heat load conditions by using the heat tolerance test.
Study Overview
Status
Unknown
Conditions
Intervention / Treatment
Detailed Description
20 male, non-combat soldiers with a pre-existing childhood diagnosis of ADHD\ADD, who are chronically treated with MPH will participate in the study. If necessary, civilian volunteers with a childhood diagnosis of ADHD\ADD may also be recruited to complete the study population (up to 50%, i.e. 10 participants).
- st encounter: the subjects will receive an explanation of the study and sign an informed consent form, complete a medical questionnaire and undergo physical examination by a physician, including ECG.
- nd-9th encounter: the subjects will be requested to undergo 10 tests on 8 examination days, which will include the: maximal oxygen consumption test, wingate test, heat tolerance test and step test. Each subject will perform each test twice: once while taking MPH and once with placebo.
Study Type
Interventional
Enrollment (Anticipated)
20
Phase
- Not Applicable
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
-
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Ramat- Gan
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Tel-Hashomer, Ramat- Gan, Israel
- Sheba Medical Center
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-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
16 years to 23 years (Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
Male
Description
Inclusion Criteria:
- Civilian volunteers aged 18-25 years.
- BMI range of 17-25.
- Diagnosed with attention deficit disorder (ADD or ADHD) since childhood.
- Routine use of Methylphenidate (at least 5 days a week).
- Without known medical illness or medication use.
- Report of performing physical exercise (twice or more a week).
- Without history of heat injury.
Exclusion Criteria:
- The existence or suspicion of existing cardiac or respiratory disease.
- Infectious disease 3 days prior to the experiment.
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Basic Science
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Methylphenidate
In experimental days taking MPH, subjects will take 20mg Ritalin® (Novartis AG) in two tablets of 10mg, by swallow 1 hour prior to performing the physical test.
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oral capsules (per os) each containing 10mg Methylphenidate.
Other Names:
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Placebo Comparator: Placebo
In experimental days with placebo subjects will be asked to ingest 2 capsules identical to Ritalin® capsules, by swallow 1 hour prior to performing the physical test.
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capsules identical in shape, colour and size to the Ritalin® capsules, which contain only the inactive ingredients of the same formulation.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
physiological strain (composite)
Time Frame: 2 experimental days for each participant
|
the physiological strain will be determined by monitoring body core temperature and heart rate of the subjects during a Heat Tolerant Test (HTT).
the test is performed in a climatic chamber.
during the test the subjects walks on a treadmill (5 km/h and 2% incline) for 2h.
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2 experimental days for each participant
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aerobic capacity
Time Frame: 2 experimental days for each participant
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the aerobic capacity of the subjects will be determined by performing a maximal oxygen consumption test (VO2max).
VO2 will be monitored continuously with a metabolic system (ERGOTEST 680, ZAN, GERMANY ).
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2 experimental days for each participant
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Rectal temperature
Time Frame: 2 experimental days for each participant
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rectal temperature will be recorded at a depth of 10 mm past the anal sphincter using YSI-401 thermal thermistor during each heat tolerance test (HTT).
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2 experimental days for each participant
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skin temperature
Time Frame: 2 experimental days for each participant
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The skin temperature will be monitored by skin thermistors located at 3 sites (chest, arm and leg).
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2 experimental days for each participant
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heart rate
Time Frame: 8 experimental days for each participant
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The heart rate will be monitored using a wearable heart rate monitor (Polar® sensor and heart rate monitor watch).
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8 experimental days for each participant
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lactic acid
Time Frame: 8 experimental days for each participant
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lactic acid level is assessed from blood drop (finger sting), will be taken before and after every test.
lactic acid is a marker for anaerobic effort evaluating.
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8 experimental days for each participant
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Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start
April 1, 2016
Primary Completion (Anticipated)
April 1, 2017
Study Completion (Anticipated)
September 1, 2017
Study Registration Dates
First Submitted
March 6, 2016
First Submitted That Met QC Criteria
March 9, 2016
First Posted (Estimate)
March 10, 2016
Study Record Updates
Last Update Posted (Estimate)
March 10, 2016
Last Update Submitted That Met QC Criteria
March 9, 2016
Last Verified
March 1, 2016
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Wounds and Injuries
- Heat Stress Disorders
- Physiological Effects of Drugs
- Neurotransmitter Agents
- Molecular Mechanisms of Pharmacological Action
- Neurotransmitter Uptake Inhibitors
- Membrane Transport Modulators
- Dopamine Agents
- Dopamine Uptake Inhibitors
- Central Nervous System Stimulants
- Methylphenidate
Other Study ID Numbers
- SHEBA-14-1245-HS-CTIL
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
No
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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