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Impact of Attention Deficit/Hyperactivity Disorder and Substance Use Disorder on Motorcycle Traffic Accidents
This study is currently recruiting participants.
Verified by Federal University of Rio Grande do Sul, September 2007
First Received: September 26, 2007   No Changes Posted
Sponsors and Collaborators: Federal University of Rio Grande do Sul
Hospital de Clinicas de Porto Alegre
Honda do Brasil
Novartis
Secretaria Nacional Antidrogas
Information provided by: Federal University of Rio Grande do Sul
ClinicalTrials.gov Identifier: NCT00536419
  Purpose

The purpose of this study is to determine whether motorcycle drivers with ADHD are at a greater risk for motorcycle accidents, and whether this risk can be mitigated by treatment with methylphenidate. We will evaluate the effectiveness of Methylphenidate on driving performance, among motorcycle drivers, and investigate the correlation between improvement of ADHD symptoms (inattention and impulsivity) and driving performance.


Condition Intervention Phase
Attention Deficit Hyperactivity Disorder
Drug: Methylphenidate
Other: Placebo
Phase IV

Study Type: Interventional
Study Design: Prevention, Randomized, Double Blind (Subject, Investigator), Parallel Assignment, Safety/Efficacy Study
Official Title: Association Between Motorcycle Accidents, Attention Deficit/Hyperactivity Disorder and Substance Use Disorder and Motorcycle Accidents

Resource links provided by NLM:


Further study details as provided by Federal University of Rio Grande do Sul:

Primary Outcome Measures:
  • Driving Performance [ Time Frame: After 4 days of medication ]
  • ADHD symptoms (ASRS) [ Time Frame: After 4 days of medication ]

Secondary Outcome Measures:
  • Clinical Global Impression (CGI) [ Time Frame: After 4 days of medication ]
  • Adverse effects [ Time Frame: After 4 days of medication ]

Estimated Enrollment: 53
Study Start Date: September 2007
Estimated Study Completion Date: September 2008
Arms Assigned Interventions
2: Placebo Comparator
4 days of placebo
Other: Placebo
Placebo, daily dose, 4 days, oral administration
1: Experimental
MPH-SODAS at day 1 (0.3/mg/kg/day); day 2 (0.7/mg/kg/day);days 3 and 4 (1.0 mg/kg/day)
Drug: Methylphenidate
Methylphenidate SODAS 0.3 mg/kg/day (day 1); 0.7 mg/kg/day (day 2); 1.0 mg/kg/day (days 3 and 4)

Detailed Description:

Traffic accidents (car and motorcycle) are the second leading cause of death in 15-34 year-old males. Within this group, the prevalence of motorcycle accidents is currently increasing at a significantly higher rate than the prevalence of car accidents, and studies in the international literature suggest that motorcycle drivers comprise a distinct driver profile to car drivers. Motorcycles are, by design, more difficult to control, and lend themselves more to performing dangerous stunts. Mistakes and lapses in judgment are likely to have more severe consequences when motorcycles are involved, especially when one considers the exposed nature of the driver. This is of special concern in Brazil, where a large population of so called "motoboys" delivers almost everything upon request, from food to work documents.

It is well known that individuals with ADHD have more traffic problems, such as: a higher risk of a car accident; more violent crashes; more traffic violations and a greater chance of losing the driver's license. On a driving simulator, subjects with ADHD usually present with more errors and crashes, in comparison to normal controls.

Treatment with Methylphenidate (MPH), however, has been shown to improve driving performance on the simulator (For example, subjects significantly reduce their speed when necessary as compared to a placebo group), and this in turn is a good indicator of better real-life driving performance.

At present, there are no studies on the effect of ADHD treatment with MPH specifically on motorcycle drivers.

This is relevant, since the increasing prevalence of traffic accidents can attributed to increased incidence of motorcycle accidents. If the treatment proves effective, this study will contribute to a reduction in a major social and health concern.

  Eligibility

Ages Eligible for Study:   19 Years to 29 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Professional Motorcycle Driver
  • Current diagnosis of ADHD

Exclusion Criteria:

  • Mental retardation
  • ADHD treatment in the last month
  • Psychosis
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT00536419

Contacts
Contact: Clarissa F Paim 55-51-21018094 cfpaim@hcpa.ufrgs.br
Contact: Renata R Goncalves 55-51-33928433 renata-rfg@uol.com.br

Locations
Brazil, RS
Hospital de Clinicas de Porto Alegre Recruiting
Porto Alegre, RS, Brazil, 90035-003
Contact: Clarissa F Paim     55-51-21018094     cfpaim@hcpa.ufrgs.br    
Principal Investigator: Luis Augusto P Rohde, MD            
Sub-Investigator: Claudia M Szobot, MD            
Sponsors and Collaborators
Federal University of Rio Grande do Sul
Hospital de Clinicas de Porto Alegre
Honda do Brasil
Novartis
Secretaria Nacional Antidrogas
Investigators
Principal Investigator: Luis Augusto P Rohde, MD Hospital de Clinicas de Porto Alegre
Study Director: Claudia M Szobot, MD Hospital de Clinicas de Porto Alegre
  More Information

Additional Information:
No publications provided

Study ID Numbers: GPPG-06450
Study First Received: September 26, 2007
Last Updated: September 26, 2007
ClinicalTrials.gov Identifier: NCT00536419     History of Changes
Health Authority: Brazil: Agencia Nacional de Vigilancia Sanitaria

Study placed in the following topic categories:
Dopamine Uptake Inhibitors
Neurotransmitter Agents
Disorders of Environmental Origin
Attention Deficit and Disruptive Behavior Disorders
Methylphenidate
Central Nervous System Stimulants
Dyskinesias
Signs and Symptoms
Dopamine
Attention Deficit Disorder with Hyperactivity
Mental Disorders
Mental Disorders Diagnosed in Childhood
Substance-Related Disorders
Hyperkinesis
Neurologic Manifestations
Dopamine Agents

Additional relevant MeSH terms:
Dopamine Uptake Inhibitors
Neurotransmitter Uptake Inhibitors
Neurotransmitter Agents
Disease
Molecular Mechanisms of Pharmacological Action
Physiological Effects of Drugs
Nervous System Diseases
Methylphenidate
Disorders of Environmental Origin
Attention Deficit and Disruptive Behavior Disorders
Central Nervous System Stimulants
Dyskinesias
Pharmacologic Actions
Signs and Symptoms
Pathologic Processes
Attention Deficit Disorder with Hyperactivity
Mental Disorders
Therapeutic Uses
Mental Disorders Diagnosed in Childhood
Substance-Related Disorders
Hyperkinesis
Neurologic Manifestations
Dopamine Agents
Central Nervous System Agents

ClinicalTrials.gov processed this record on September 11, 2009