Effects of a Sedentary Behaviors at Work on Health in Emergency Medical Dispatchers and CODIS Operators (SECODIS) (SECODIS)

Effects of a Sedentary Behaviors at Work on Health in Emergency Medical Dispatchers and CODIS Operators (SECODIS)

Effects of a Sedentary Behaviors at Work on Health in Emergency Medical Dispatchers and CODIS Operators

The purpose of the study is to demonstrate a reduction of sedentary behavior following a behavioral intervention (sit-and-stand desk, and cycloergometer)

Each emergency medical services dispatcher and each firefighter participates in the study for three days. A normal working day from of 12h is compared to: (i) a working day during which the participants have to get up at least 5 min/hour (sit-and-stand desk), (ii) a working day during which they can use a cycloergometer installed under the desk. Conditions will be random using Latin Square design with stratification between sequences cross-over design on occupation (EMD vs. firefighters). The heart rate variability (measured using Zephyr®), the electrodermal activity (Empatica® E4), the level of physical activity (Actigraph®) as well as the blood sugar (Freestyle®) will be measured continuously during the 12 hours of work and the night after except for Actigraph® and Freestyle® device that will be let one week. Blood and saliva samples will be collected at the beginning and end of each working day (6 samples in total). Participants will have to complete a detailed questionnaire to identify the particular events (vital emergencies, etc.) that may influence the parameters measured. Participants will be asked to answer a general questionnaire once at the start of the study that will cover different aspects: Sociodemographic, Visual analogue scale (VAS) related to psychosocial factors : stress at home, burnout / burnout, decision latitude / autonomy at work, psychological demands at work (workload), support from the hierarchy, support from co-workers, family support, job satisfaction with regard to effort, commitment to work, addiction to work, quality of life, need for psychological support, Eating habits. They will then have to answer a short questionnaire at the beginning and at the end of each measurement day. It will cover different aspects: Four VAS (stress level, fatigue, anxiety, mood), Physical activity and sedentary lifestyle (number of hours of physical activity and sitting during the last 24 hours), Daily consumption (tobacco, alcohol, cannabis, coffee, tea).

Sedentary behavior measured by actimetry using Actigraph® in number of minutes per day standing/active.

Sedentary behavior measured by actimetry using Actigraph® in number of minutes per day standing/active.

Sedentary behavior measured by actimetry using Actigraph® in number of minutes per day standing/active.

Sedentary behavior measured by actimetry using Actigraph® in number of minutes per day standing/active.

Sedentary behavior measured by actimetry using Actigraph® in number of minutes standing/active during one week.

Sedentary behavior measured by actimetry using Actigraph® in number of minutes standing/active during one week.

Stress at home measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.

Stress at home measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.

Stress at home measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.

Stress at home measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.

Stress at home measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.

Stress at home measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.

Fatigue measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.

Fatigue measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.

Fatigue measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.

Fatigue measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.

Fatigue measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.

Fatigue measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.

Anxiety measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.

Anxiety measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.

Anxiety measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.

Anxiety measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.

Anxiety measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.

Anxiety measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.

Mood measured using visual analogue scale ranging from 0 (Bad) to 100 (Excellent). Higher scores mean a better outcome.

Mood measured using visual analogue scale ranging from 0 (Bad) to 100 (Excellent).Higher scores mean a better outcome.

Mood measured using visual analogue scale ranging from 0 (Bad) to 100 (Excellent).Higher scores mean a better outcome.

Mood measured using visual analogue scale ranging from 0 (Bad) to 100 (Excellent).Higher scores mean a better outcome.

Mood measured using visual analogue scale ranging from 0 (Bad) to 100 (Excellent).Higher scores mean a better outcome.

Mood measured using visual analogue scale ranging from 0 (Bad) to 100 (Excellent).Higher scores mean a better outcome.

Stress at work measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum).Higher scores mean a worse outcome.

Stress at work measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum).Higher scores mean a worse outcome.

Stress at work measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum).Higher scores mean a worse outcome.

Stress at work measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum).Higher scores mean a worse outcome.

Stress at work measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum).Higher scores mean a worse outcome.

Stress at work measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum).Higher scores mean a worse outcome.

Physical activity intensity during the last 24 hours measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a higher intensity.

Physical activity intensity during the last 24 hours measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a higher intensity.

Physical activity intensity during the last 24 hours measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a higher intensity.

Physical activity intensity during the working day measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a higher intensity.

Physical activity intensity during the working day measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a higher intensity.

Physical activity intensity during the working day measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a higher intensity.

Sociodemographic will be assessed: gender, age, marital status, children, occupation, and recent stressful event

Sleep quality measured using visual analogue scale ranging from 0 (Bad) to 100 (Excellent). Higher scores mean a better outcome.

Family support measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a better outcome.

Burnout measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.

Job demand measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.

Job control measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a better outcome.

Hierarchy support measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a better outcome.

Colleagues support measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a better outcome.

Effort reward-imbalance measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a better outcome.

"How do you characterize your diet" measured on a visual analogue scale ranging from 0 (Not at all balanced) to 100 (Very balanced)

Average job control level measured on a visual analogue scale ranging from 0 (Minimum) to 100 (Maximum)

Average hierarchy support measured on a visual analogue scale ranging from 0 (Minimum) to 100 (Maximum)

Average colleagues support measured on a visual analogue scale ranging from 0 (Minimum) to 100 (Maximum)

Average effort reward imbalance measured on a visual analogue scale ranging from 0 (Minimum) to 100 (Maximum)

Average sleep quality imbalance measured on a visual analogue scale ranging from 0 (Minimum) to 100 (Maximum)

The Recent Physical Activity Questionnaire (RPAQ) assesses the level of physical activity and sedentary lifestyle in adults over the past four weeks. It is divided into three parts: work and study, home and leisure, and finally, stairs and travel. It makes it possible to classify individuals into several categories, one on sedentary lifestyle (low, resistant either 3-7h/day or high or >7h/day) and one on the level of physical activity (<8.3 MET.hour/week: inactive or >8.3 MET.h/wk: active).

The Maslach Burn-out Inventory (MBI) is composed of 22 items designed to assess the three components of the burn-out syndrome: emotional exhaustion (9 items), depersonalization (5 items) and reduced personal accomplishment (8 items). The items are written in the form of statements about personal feelings or attitudes. Items are made of a 7-point scale frequency of feelings, varying from "never" to "every day". The scores for each component of the burn-out syndrome are considered separately. If desired for participant feedback, each score can be coded as low, average, or high.

The Job Demand-Control-Support (JDSC) questionnaire of Karasek assessed job demands, job control and social support through 26 items. The questionnaire measures nine items of job demands, nine items of job control and eight items of social support. Items of JCQ are scored on a four-point Likert-type scale, ranging from 1 = strongly disagree to 4 = strongly agree. Among the 26 items, five negative statements require reverse scoring. From French data, the job strain threshold is set for a demands score higher than 20 and a control score lower than 71; the isostrain threshold is determined from a combining score of job strain and social support lower than 24. We would ask the participants to fulfil the questionnaire from memories that they keep of their work.

The Effort-Reward Imbalance Questionnaire (ERI) is a self-administrated test assessing psychological distress and health problems that may occur when there is an imbalance between the efforts required by the work and the rewards received. We used the 46 items of the French version of the ERI model exploring efforts (six items), over commitment (eleven items), and rewards (seventeen items). Items of ERI were scored on a five-point Likert-type scale, ranging from 1 = disagree to 5 = agree and very disturbed. A ratio extrinsic efforts and rewards can assess the imbalance between these two dimensions. A ratio greater than one defines employees exposed to an imbalance between efforts and rewards.

Inclusion Criteria: Emergency medical dispatchers or firefighters from the departmental fire and rescue operational center (CODIS). Person able to give an informed consent to participate in research Affiliated with a Social Security scheme. Exclusion Criteria: Non-affiliated to a health insurance, Protected persons (minors, pregnant women, breastfeeding women, guardianship, curatorship, deprived of freedoms, safeguard of justice), Refusal to participate.