Effects of a Sedentary Behaviors at Work on Health in Emergency Medical Dispatchers and CODIS Operators (SECODIS)
- Conditions
- Occupational StressSedentary Behavior
- Interventions
- Behavioral: ControlBehavioral: Sit-and-stand deskBehavioral: Cycloergometer
- Registration Number
- NCT05931406
- Lead Sponsor
- University Hospital, Clermont-Ferrand
- Brief Summary
The purpose of the study is to study changes in sedentary behavior following a behavioral intervention (sit-and-stand desk, and 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 on each working day, at the beginning and end of the day i.e. two measures for blood samples, and every three hours i.e. 5 measures for saliva sampling. 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).
Recruitment & Eligibility
- Status
- RECRUITING
- Sex
- All
- Target Recruitment
- 36
- 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.
- Being able to use the sit-stand desk and the cycle ergometer
- 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 & Design
- Study Type
- INTERVENTIONAL
- Study Design
- CROSSOVER
- Arm && Interventions
Group Intervention Description Emergency medical dispatchers Control - Firefighter Sit-and-stand desk - Firefighter Cycloergometer - Emergency medical dispatchers Cycloergometer - Emergency medical dispatchers Sit-and-stand desk - Firefighter Control -
- Primary Outcome Measures
Name Time Method Sedentary behavior 12 hours of work corresponding to the cycloergometer condition Sedentary behavior measured by actimetry using Actigraph® in number of minutes per day standing/active.
- Secondary Outcome Measures
Name Time Method Average cannabis consumption Once at baseline Average number of cannabis joint per week
Mood 6 pm, end of the cycloergometer day Mood measured using visual analogue scale ranging from 0 (Bad) to 100 (Excellent).Higher scores mean a better outcome.
Sedentary behavior one-week (168 hours) cycloergometer cycle Sedentary behavior measured by actimetry using Actigraph® in number of minutes standing/active during one week.
Stress at work 6 pm, end of the cycloergometer day Stress at work measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum).Higher scores mean a worse outcome.
Tea consumption 6 pm, end of the cycloergometer day Number of cups of tea during the last 24h
Sociodemographic Once at baseline Sociodemographic will be assessed: gender, age, marital status, children, occupation, and recent stressful event
Electrodermal activity 24 hours record corresponding to 12 hours of work and the next 12 hours of rest The electrodermal activity measured using Empatica E4
Fatigue 6 pm, end of the cycloergometer day Fatigue measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.
Anxiety 6 pm, end of the cycloergometer day Anxiety measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.
Coffee consumption 6 pm, end of the cycloergometer day Number of cups of coffee during the working day
Average alcohol consumption Once at baseline Average number of alcohol glasses per week
Sleep quality Once at baseline Sleep quality measured using visual analogue scale ranging from 0 (Bad) to 100 (Excellent). Higher scores mean a better outcome.
Burnout Once at baseline Burnout measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.
Job demand Once at baseline Job demand measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.
Heart rate variability 24 hours record corresponding to 12 hours of work and the next 12 hours of rest The heart rate variability measured using Zephyr®
Stress at home 6 pm, end of the cycloergometer day Stress at home measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a worse outcome.
Amount of physical activity 6 pm, end of the cycloergometer day Number of hours of physical activity during the working day
Sitting time 6 pm, end of the cycloergometer day Number of hours sit during the working day
Tabacco consumption 6 pm, end of the cycloergometer day Number of cigarette during the working day
Family support Once at baseline Family support measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a better outcome.
Average tea consumption Once at baseline Average number of cup of tea per day
Intensity of physical activity 6 pm, end of the cycloergometer day 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.
Job control Once at baseline Job control measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a better outcome.
Medical treatment Once at baseline Medical treatment measured using multi-choice question "do you take long term medication?"
Average physical activity intensity Once at baseline Average physical activity intensity per week
Hierarchy support Once at baseline Hierarchy support measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a better outcome.
Average physical activity Once at baseline Average number of hours of physical activity per week
Salivary cortisol 6 pm, end of the cycloergometer day Salivary cortisol measured in µg/dl
Salivary DHEAS 6 pm, end of the cycloergometer day Salivary DHEAS measured in pg/ml
Salivary ghrelin 6 pm, end of the cycloergometer day Salivary ghrelin measured in ng/ml
Colleagues support Once at baseline Colleagues support measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a better outcome.
Effort reward-imbalance Once at baseline Effort reward-imbalance measured using visual analogue scale ranging from 0 (Minimum) to 100 (Maximum). Higher scores mean a better outcome.
Allergy Once at baseline Allergy measured using multi-choice question "do you have allergy?"
Average coffee consumption Once at baseline Average number of cup of coffee per day
Average food consumption Once at baseline Average food consumption of 16 food groups
Diet characterization Once at baseline "How do you characterize your diet" measured on a visual analogue scale ranging from 0 (Not at all balanced) to 100 (Very balanced)
Average tabacco consumption Once at baseline Average number of cigarette per day
JDCS questionnaire Once at baseline The Job Demand-Control-Support (JDCS) questionnaire of Karasek assess 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 JDCS 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.
Blood leptin 6 pm, end of the cycloergometer day Blood leptin measured in ng/ml
Blood pro-inflammatory cytokines 6 pm, end of the cycloergometer day Blood pro-inflammatory cytokines measured in pg/ml
Blood NPY 6 pm, end of the cycloergometer day Blood vascular distribution of neuropeptide Y (NPY) measured in pg/ml
RPAQ questionnaire Once at baseline 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 Metabolic equivalent of task(MET).hour/week: inactive or \>8.3 MET.h/wk: active).
MBI questionnaire Once at baseline 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.
Salivary leptin 6 pm, end of the cycloergometer day Salivary leptin measured in ng/ml
Blood DHEAS 6 pm, end of the cycloergometer day Blood DHEAS measured in µg/ml
Blood ghrelin 6 pm, end of the cycloergometer day Blood ghrelin measured in pg/ml
Blood cortisol 6 pm, end of the cycloergometer day Blood cortisol measured in ng/ml or nmol/l
ERI questionnaire Once at baseline 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.
Blood BDNF 6 pm, end of the cycloergometer day Blood brain-derived neurotrophic factor (BDNF) measured in pg/ml
Trial Locations
- Locations (1)
CHU clermont-ferrand
🇫🇷Clermont-Ferrand, France