Fermented Papaya and Driving Simulator Older Adult Study

This study, titled "Fermented Papaya and Driving Simulator Older Adult Study," investigates the association between Fermented Papaya Preparation (FPP) and driving performance in adults aged 70-80 using a high-fidelity driving simulator. With the aging population growing and driving safety as a critical issue among older adults, this study aims to determine whether FPP-a known antioxidant with anti-inflammatory properties-can enhance cognitive functions essential for safe driving, including attention, working memory, reaction time, and executive functions.

Participants will undergo three driving assessments in the simulator: a baseline test, a short-term follow-up (within 24 hours after FPP administration), and a long-term follow-up at 8 weeks. Each participant acts as their own control, providing comparative data on FPP's effects over time. The primary endpoints include reductions in driving errors associated with psychomotor performance and improvements in divided attention and executive functions.

Technical Aspects and Measures:

Simulator Setup and Scenario: The RTI high-fidelity simulator used in this study provides a realistic and controlled driving environment, replicating common on-road scenarios such as lane changes, reactions to environmental cues, and avoidance maneuvers. Scenarios are randomized to control for learning effects.

Visual and Cognitive Testing: Standardized tests, such as the Montreal Cognitive Assessment and the Useful Field of View, will measure baseline cognitive abilities and potential changes following FPP administration.

Simulator Sickness Management: To ensure comfort, a simulator sickness protocol is in place, including pre-study dietary recommendations and a controlled lab environment with ventilation and temperature settings.

This study could yield significant data on FPP's impact on driving skills, supporting the potential for nutraceutical interventions in promoting driving safety and independence among older adults.

Inclusion criteria

• Aged between 70 and 80 years.
• Community-dwelling and independent in daily living activities.
• Holds a valid driver's license and has driven in the last 3 months.
• Proficient in reading, writing, and speaking English.
• Physically able to participate in a driving simulation.
• Willing to comply with the study requirements, including FPP dosing and simulator sessions.

Exclusion criteria

• Currently taking psychoactive medications.
• Diagnosed with a physical disability that impairs driving ability.
• History of upper extremity amputation or right lower extremity amputation.
• Scores below 18/30 on the Montreal Cognitive Assessment (MoCA).
• Exhibits symptoms of severe simulator sickness after an initial test session.