AI-Powered Micro-Breaks at Work

Seven additional items are open-ended and will be analyzed qualitatively. These items allow participants to elaborate on what aspects of the program they found most or least valuable, describe their experience with communication tools within the intervention, and offer suggestions for improvement.

We will use a 10 item questionnaire (Bangor et al., 2009) designed to measure participants' satisfaction with Mobi, the AI health coach. The total score of System Usability Scale is 0 and the highest one is 100. A higher score means a better outcome.

Dropout rate and frequency of app usage.

Vigor refers to a positive affective state experienced at work. It will be assessed using five items from the Physical Strength subscale of the instrument developed by Shirom (2003). A higher score means a better outcome (i.e., increased employee vigor).

Focus refers to an employee's capacity to maintain attention and mental clarity while working. It will be assessed using five items from the Cognitive Liveliness subscale of the instrument developed by Shirom (2003). A higher score indicates a better outcome (i.e., increased cognitive focus at work).

Physical discomfort (musculoskeletal pain) will be measured using a single-item instrument based on the Visual Analog Scale (VAS) (Häfeli & Elfering, 2006). The VAS is a widely used and validated method for assessing subjective physical symptoms such as pain intensity. Participants will indicate their level of discomfort by marking a point along a continuum, reflecting their experience over the past week. Higher scores indicate greater musculoskeletal discomfort.

Affect will be measured using the Positive Affect subscale from the Positive and Negative Affect Schedule (PANAS; Watson, Clark, & Tellegen, 1988). This scale assesses the extent to which individuals have experienced a range of positive emotions (e.g., enthusiastic, inspired, alert) over the past week. Participants rate each item on a 5-point scale, from "Very slightly or not at all" to "Extremely." Higher scores reflect a higher level of positive emotional experience.

What employees currently do to stay active during working hours (i.e., stretching, short walks, taking the stairs, using a standing desk, scheduled workout sessions during work, other)

To assess participants' engagement in physical activity outside working hours, we included two binary (Yes/No) items referring to typical weekly behaviors. The first item evaluates whether participants engage in light movement after work hours (e.g., walking, stretching), while the second item assesses participation in regular, scheduled workout sessions either before or after the workday. These items aim to provide a brief overview of participants' physical activity routines that may contribute to their overall well-being and complement the effects of the intervention.

Age, gender, background, educational level, average monthly income, work experience, etc.