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

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

Study Overview

• Status: Not yet recruiting
• Conditions: Occupational Stress; Sedentary Behavior
• Intervention / Treatment: Behavioral: Control; Behavioral: Sit-and-stand desk; Behavioral: Cycloergometer

Detailed Description

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).

• Study Type: Interventional
• Enrollment (Estimated): 36
• Phase: Not Applicable

Contacts and Locations

• Study Contact: Name: Lise Laclautre; Phone Number: 334.73.754.963; Email: promo_interne_drci@chu-clermontferrand.fr

Study Locations

• France
  • Clermont-Ferrand, France
    • CHU Clermont-Ferrand

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: Yes

Description

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.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Prevention
• Allocation: Randomized
• Interventional Model: Crossover Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Emergency medical dispatchers	Behavioral: Control; A normal working day from of 12h; Behavioral: Sit-and-stand desk; a working day during which the participants have to get up at least 5 min/hour; Behavioral: Cycloergometer; a working day during which they can use a cycloergometer installed under the desk
Experimental: Firefighter	Behavioral: Control; A normal working day from of 12h; Behavioral: Sit-and-stand desk; a working day during which the participants have to get up at least 5 min/hour; Behavioral: Cycloergometer; a working day during which they can use a cycloergometer installed under the desk

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Sedentary behavior	Sedentary behavior measured by actimetry using Actigraph® in number of minutes per day standing/active.	12 hours of work corresponding to the control condition
Sedentary behavior	Sedentary behavior measured by actimetry using Actigraph® in number of minutes per day standing/active.	12 hours of work corresponding to the sit-and-stand desk condition
Sedentary behavior	Sedentary behavior measured by actimetry using Actigraph® in number of minutes per day standing/active.	12 hours of work corresponding to the cycloergometer condition

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Sedentary behavior	Sedentary behavior measured by actimetry using Actigraph® in number of minutes per day standing/active.	one-week (168 hours) control cycle
Sedentary behavior	Sedentary behavior measured by actimetry using Actigraph® in number of minutes standing/active during one week.	one-week (168 hours) sit-and-stand desk cycle
Sedentary behavior	Sedentary behavior measured by actimetry using Actigraph® in number of minutes standing/active during one week.	one-week (168 hours) cycloergometer cycle
Heart rate variabily	The heart rate variability measured using Zephyr®	24 hours record corresponding to 12 hours of work and the next 12 hours of rest
Electrodermal activity	The electrodermal activity measured using Empatica E4	24 hours record corresponding to 12 hours of work and the next 12 hours of rest
Stress at home	Stress at home measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.	8 am, beginning of the control day
Stress at home	Stress at home measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.	8 am, beginning of the sit-and-stand desk day
Stress at home	Stress at home measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.	8 am, beginning of the cycloergometer day
Stress at home	Stress at home measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.	6 pm, end of the control day
Stress at home	Stress at home measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.	6 pm, end of the sit-and-stand desk day
Stress at home	Stress at home measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.	6 pm, end of the cycloergometer day
Fatigue	Fatigue measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.	8 am, beginning of the control day
Fatigue	Fatigue measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.	8 am, beginning of the sit-and-stand desk day
Fatigue	Fatigue measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.	8 am, beginning of the cycloergometer day
Fatigue	Fatigue measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.	6 pm, end of the control day
Fatigue	Fatigue measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.	6 pm, end of the sit-and-stand desk day
Fatigue	Fatigue measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.	6 pm, end of the cycloergometer day
Anxiety	Anxiety measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.	8 am, beginning of the control day
Anxiety	Anxiety measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.	8 am, beginning of the sit-and-stand desk day
Anxiety	Anxiety measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.	8 am, beginning of the cycloergometer day
Anxiety	Anxiety measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.	6 pm, end of the control day
Anxiety	Anxiety measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.	6 pm, end of the sit-and-stand desk day
Anxiety	Anxiety measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.	6 pm, end of the cycloergometer day
Mood	Mood measured using visual analogue scale ranging from 0 (Bad) to 100 (Excellent). Higher scores mean a better outcome.	6 pm, beginning of the control day
Mood	Mood measured using visual analogue scale ranging from 0 (Bad) to 100 (Excellent).Higher scores mean a better outcome.	8 am, beginning of the sit-and-stand desk day
Mood	Mood measured using visual analogue scale ranging from 0 (Bad) to 100 (Excellent).Higher scores mean a better outcome.	8 am, beginning of the cycloergometer day
Mood	Mood measured using visual analogue scale ranging from 0 (Bad) to 100 (Excellent).Higher scores mean a better outcome.	6 pm, end of the control day
Mood	Mood measured using visual analogue scale ranging from 0 (Bad) to 100 (Excellent).Higher scores mean a better outcome.	6 pm, end of the sit-and-stand desk day
Mood	Mood measured using visual analogue scale ranging from 0 (Bad) to 100 (Excellent).Higher scores mean a better outcome.	6 pm, end of the cycloergometer day
Stress at work	Stress at work measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum).Higher scores mean a worse outcome.	8 am, beginning of the control day
Stress at work	Stress at work measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum).Higher scores mean a worse outcome.	8 am, beginning of the sit-and-stand desk day
Stress at work	Stress at work measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum).Higher scores mean a worse outcome.	8 am, beginning of the cycloergometer desk day
Stress at work	Stress at work measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum).Higher scores mean a worse outcome.	6 pm, end of the control day
Stress at work	Stress at work measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum).Higher scores mean a worse outcome.	6 pm, end of the sit-and-stand desk day
Stress at work	Stress at work measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum).Higher scores mean a worse outcome.	6 pm, end of the cycloergometer day
Amount of physical activity	Number of hours of physical activity during the last 24 hours	8 am, beginning of the control day
Intensity of physical activity	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.	8 am, beginning of the control day
Amount of physical activity	Number of hours of physical activity during the last 24 hours	8 am, beginning of the sit-and-stand desk day
Intensity of physical activity	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.	8 am, beginning of the sit-and-stand desk day
Amount of physical activity	Number of hours of physical activity during the last 24 hours	8 am, beginning of the cycloergometer day
Intensity of physical activity	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.	8 am, beginning of the cycloergometer day
Amount of physical activity	Number of hours of physical activity during the working day	6 pm, end of the control day
Intensity of physical activity	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.	6 pm, end of the control day
Amount of physical activity	Number of hours of physical activity during the working day	6 pm, end of the sit-and-stand desk day
Intensity of physical activity	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.	6 pm, end of the sit-and-stand desk day
Amount of physical activity	Number of hours of physical activity during the working day	6 pm, end of the cycloergometer day
Intensity of physical activity	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.	6 pm, end of the cycloergometer day
Sitting time	Number of hours sit during the last 24 hours	8 am, beginning of the control day
Sitting time	Number of hours sit during the last 24 hours	8 am, beginning of the sit-and-stand desk day
Sitting time	Number of hours sit during the last 24 hours	8 am, beginning of the cycloergometer day
Sitting time	Number of hours sit during the working day	6 pm, end of the control day
Sitting time	Number of hours sit during the working day	6 pm, end of the sit-and-stand desk day
Sitting time	Number of hours sit during the working day	6 pm, end of the cycloergometer day
Tabacco consumption	Number of cigarette during the last 24h	8 am, beginning of the control day
Tabacco consumption	Number of cigarette during the last 24h	8 am, beginning of the sit-and-stand desk day
Tabacco consumption	Number of cigarette during the last 24h	8 am, beginning of the cycloergometer day
Tabacco consumption	Number of cigarette during the working day	6 pm, end of the control day
Tabacco consumption	Number of cigarette during the working day	6 pm, end of the sit-and-stand desk day
Tabacco consumption	Number of cigarette during the working day	6 pm, end of the cycloergometer day
Tea consumption	Number of cups of tea during the last 24h	8 am, beginning of the control day
Tea consumption	Number of cups of tea during the last 24h	8 am, beginning of the sit-and-stand desk day
Tea consumption	Number of cups of tea during the last 24h	8 am, beginning of the cycloergometer day
Tea consumption	Number of cups of tea during the last 24h	6 pm, end of the control day
Tea consumption	Number of cups of tea during the last 24h	6 pm, end of the sit-and-stand desk day
Tea consumption	Number of cups of tea during the last 24h	6 pm, end of the cycloergometer day
Coffee consumption	Number of cups of coffee during the last 24h	8 am, beginning of the control day
Coffee consumption	Number of cups of coffee during the last 24h	8 am, beginning of the sit-and-stand desk day
Coffee consumption	Number of cups of coffee during the last 24h	8 am, beginning of the cycloergometer day
Coffee consumption	Number of cups of coffee during the working day	6 pm, end of the control day
Coffee consumption	Number of cups of coffee during the working day	6 pm, end of the sit-and-stand desk day
Coffee consumption	Number of cups of coffee during the working day	6 pm, end of the cycloergometer day
Sociodemographic	Sociodemographic will be assessed: gender, age, marital status, children, occupation, and recent stressful event	Once at baseline
Sleep quality	Sleep quality measured using visual analogue scale ranging from 0 (Bad) to 100 (Excellent). Higher scores mean a better outcome.	Once at baseline
Familly support	Family support measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a better outcome.	Once at baseline
Burnout	Burnout measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.	Once at baseline
Job demand	Job demand measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.	Once at baseline
Job control	Job control measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a better outcome.	Once at baseline
Hierarchy support	Hierarchy support measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a better outcome.	Once at baseline
Colleagues support	Colleagues support measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a better outcome.	Once at baseline
Effort reward-imbalance	Effort reward-imbalance measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a better outcome.	Once at baseline
Medical treatment	Medical treatment measured using multi-choice question "do you take long terme medication?"	Once at baseline
Allergy	Allergy measured using multi-choice question "do you have allergy?"	Once at baseline
Average physical activity	Average number of hours of physical activity per week	Once at baseline
Average physical activity intensity	Average physical activity intensity per week	Once at baseline
Average tabacco consumption	Average number of cigarette per day	Once at baseline
Average alcohol consumption	Average number of alcohol glasses per week	Once at baseline
Average cannabis consumption	Average number of cannabis joint per week	Once at baseline
Average tea consumption	Average number of cup of tea per day	Once at baseline
Average coffee consumption	Average number of cup of coffee per day	Once at baseline
Average food consumption	Average food consumption of 16 food group	Once at baseline
Diet characterization	"How do you characterize your diet" measured on a visual analogue scale ranging from 0 (Not at all balanced) to 100 (Very balanced)	Once at baseline
Average burnout level	Average burnout level measured on a visual analogue scale ranging from 0 (Minimum) to 100 (Maximum)	Once at baseline
Average job control level	Average job control level measured on a visual analogue scale ranging from 0 (Minimum) to 100 (Maximum)	Once at baseline
Average hierarchy support	Average hierarchy support measured on a visual analogue scale ranging from 0 (Minimum) to 100 (Maximum)	Once at baseline
Average colleagues support	Average colleagues support measured on a visual analogue scale ranging from 0 (Minimum) to 100 (Maximum)	Once at baseline
Average family support	Average family support measured on a visual analogue scale ranging from 0 (Minimum) to 100 (Maximum)	Once at baseline
Average effort reward imbalance	Average effort reward imbalance measured on a visual analogue scale ranging from 0 (Minimum) to 100 (Maximum)	Once at baseline
Average sleep quality	Average sleep quality imbalance measured on a visual analogue scale ranging from 0 (Minimum) to 100 (Maximum)	Once at baseline
RPAQ questionnaire	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).	Once at baseline
MBI questionnaire	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.	Once at baseline
JDSC questionnaire	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.	Once at baseline
ERI questionnaire	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.	Once at baseline
Salivary cortisol	Salivary cortisol measured in µg/dl	Once at baseline
Blood cortisol	Blood cortisol measured in ng/ml or nmol/l	Once at baseline
Salivary DHEAS	Salivary DHEAS measured in pg/ml	Once at baseline
Blood DHEAS	Blood DHEAS measured in µg/ml	Once at baseline
Salivary leptin	Salivary leptin measured in ng/ml	Once at baseline
Blood leptin	Blood leptin measured in ng/ml	Once at baseline
Salivary ghrelin	Salivary ghrelin measured in ng/ml	Once at baseline
Blood ghrelin	Blood ghrelin measured in pg/ml	Once at baseline
Blood BDNF	Blood brain-derived neurotrophic factor (BDNF) measured in pg/ml	Once at baseline
Blood pro-inflammatory cytokines	Blood pro-inflammatory cytokines measured in pg/ml	Once at baseline
Blood NPY	Blood vascular distribution of neuropeptide Y (NPY) measured in pg/ml	Once at baseline

Collaborators and Investigators

• Sponsor: University Hospital, Clermont-Ferrand
• Investigators: Principal Investigator: Fréderic DUTHEIL, fdutheil@chu-clermontferrand.fr

Study record dates

Study Major Dates

• Study Start (Estimated): March 1, 2024
• Primary Completion (Estimated): December 1, 2024
• Study Completion (Estimated): September 1, 2026

Study Registration Dates

• First Submitted: June 9, 2023
• First Submitted That Met QC Criteria: June 27, 2023
• First Posted (Actual): July 5, 2023

Study Record Updates

• Last Update Posted (Actual): February 20, 2024
• Last Update Submitted That Met QC Criteria: February 19, 2024
• Last Verified: June 1, 2023

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Behavioral Symptoms; Pathologic Processes; Disease Attributes; Stress, Psychological; Occupational Diseases; Emergencies; Occupational Stress
• Other Study ID Numbers: RBHP 2022 DUTHEIL; 2022-A02730-43 (Other Identifier: ANSM)

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No