The objective of this project is to examine the effects of new technology in car seats on fatigue and discomfort. The first step involves defining the fatigue framework and selecting an appropriate assessment method. Since different studies suggest that the definition of fatigue can vary in different situations, a street interview was conducted to explore the type of fatigue relevant to the context of this project. The literature review and street interviews indicated subjective measurements of fatigue, including sleepiness, sore limbs, backaches, headaches, numbness, and stiff muscles. The objective measurements include Electromyography and Heart Rate Variability.

A pilot test was conducted which revealed certain drawbacks in the testing process. Subsequently, these issues were addressed in the formal test. The Visual Analogue Scale (VAS) form was introduced to assess discomfort in local muscles, comfort, and fatigue symptoms, in addition to the subjective measurements. Leg circumference was also measured to indicate blood flow.

The formal test took place over 150 minutes per person in Rotterdam, with 16 participants. Data were recorded while participants were seated in the chairs.

The data analysis indicates a clear conclusion regarding the evaluation of the seats: the technology integrated into the seats demonstrates a positive effect on fatigue and perceived discomfort in the shoulder, mid, and leg regions, as evidenced by EMG and VAS discomfort scores.