MILESTONE - MobILe and tEchnological SoluTions for OccupatioNal drivErs

The first intervention group (n= 30 professional drivers) will receive real-time triggers related to acute stress and sleepiness/fatigue. The real-time feedback involves giving relevant triggers when exceeding some critical stress values or detecting events of \'energy-takers\' based on accurate measurements of mental energy in a fully automated way. The selected triggers will be based on the co-creation workshops with drivers (e.g., auditive, visual) in order to select the most efficient (type or combination of) trigger(s) for the real-time feedback. The warning messages will be tailored to the preferences of the driver (e.g., personalized comfort- and safety-related settings) and aim to generate a warning message/signal meant to alert drivers and prevent they might end up with high stress levels

The second intervention group (n= 30 professional drivers) will receive personalized tailored feedback to reduce chronic stress and sleepiness/fatigue. The advice involves personalized (semi-)automatic feedback to drivers about a reduced stress level via the mobile app with automatic reports, as well as post-intervention during the next work break or at the end of the workday, based on the preferences of the driver. The (semi-)automatic feedback is based on the theory of Stages of Change, by which a driver will only receive relevant feedback based on their attitude and willingness during daily life.

The third intervention group (n= 30 professional drivers) will receive both real-time feedback related to acute stress and sleepiness/fatigue, as well as personalized tailored feedback related to chronic stress and sleepiness/fatigue, similar as in the first and second intervention groups.

The fourth intervention group (n= 30 professional drivers) will receive app-supported exercise therapy. The intervention will be based on principles of high-intensity training exercises that focus on the improvement of cardiorespiratory exercise capacity, as well as on the reduction of stress levels during work. Participants will receive instructions via the app to do some short, vigorous exercises adapted to their work environment at regular intervals, e.g., bending-and-stretching exercises with a weight in their hands, walking up and down the stairs of their vehicle for a few minutes, etc.

The active control group (n= 20 professional drivers) will get a conventional intervention to reduce stress, e.g., mindfulness.