Alborz University

Introduction: In healthcare settings, the health and efficiency of employees are crucial for providing quality patient care. This study aims to investigate the impact of activity duration, sense of comfort, and thermal adaptation on cognitive performance and general fatigue among healthcare employees in Ilam.
Methods: The study involved personnel from five hospitals in Ilam city, evaluated from August to November 2023. Data was collected through questionnaires and analyzed using statistical methods.
Results: The findings indicated a neutral temperature of 19°C, which deviates from global standards ISO 7730 and ASHRAE 55. Analysis showed that work duration significantly affects both cognitive performance and general fatigue. Thermal comfort significantly impacts general fatigue but not cognitive performance. Thermal adaptation, however, significantly affects both cognitive performance and general fatigue. No significant interaction effect was found between thermal comfort and thermal adaptation on cognitive performance or general fatigue.
Conclusion: The optimal thermal comfort point for healthcare workers is 19°C. Activity duration and thermal adaptation play a key role in enhancing cognitive performance and reducing fatigue. Reducing the range of comfort and thermal adaptation can lead to increased work errors among healthcare personnel.