
A recent randomized controlled trial published in the Journal of Psychopharmacology investigated the effects of a 10 mg dose of methylphenidate on driving performance in adults. The study aimed to assess vehicle control and speed maintenance during prolonged, monotonous driving.
Key Clinical Considerations
- Sample Size: 25 healthy adults (mean age = 33.5 ± 7.8 years, 64% male).
- Methodology: Two 40-minute simulated highway drives, 1 week apart, with eye movements monitored.
- Primary Outcomes: Standard deviations of lateral position (SDLP), speed (SDS), and steering variability.
- Results: Significant reduction in lane weaving (SDLP mean difference = -1.33, p = 0.001) and speed variation (SDS mean difference = -0.56, p = 0.014).
- Ocular Metrics: Limited changes in gaze transition entropy (GTE) and stationary gaze entropy (SGE).
Clinical Practice Impact 
- Patient Communication: Inform patients about the potential benefits of methylphenidate for improving driving performance.
- Practice Integration: Consider methylphenidate for patients with driving performance concerns, especially during prolonged driving.
- Risk Management: Monitor for any adverse effects and adjust dosage as necessary.
- Action Items: Further research needed to explore higher doses and long-term effects.
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