Workplace Intervention to Reduce Sitting Time: a Randomized Clinical Trial.
- Conditions
- Sedentary BehaviorOffice Workers
- Interventions
- Behavioral: Computer prompt "Stand up for your Health®"
- Registration Number
- NCT05790837
- Lead Sponsor
- Universidad del Desarrollo
- Brief Summary
The goal of this randomized clinical trial is to determine the effect of the computer prompt to break sitting time in office workers.
The main question is: What is the effect of the computer prompt "Stand Up for Your Health®" plus education on sitting time, musculoskeletal symptoms, cardiometabolic markers, and physical activity in office workers compared with only education? In addition, to determine the level of adherence to the intervention program by identifying barriers and facilitators referred by the participants.
The participants will be divided into two groups, the experimental and the control group. The participants in the experimental group will use the computer prompt on their desktop and receive information about sedentary behaviour, and the control group will receive only information. All participants will wear accelerometers for one week. The musculoskeletal symptoms and cardiometabolic markers will be measured at baseline, 3rd and 6th month.
- Detailed Description
Sedentary behaviour and physical inactivity are risk factors for noncommunicable diseases related to the work environment. The accumulation of sitting time during the workday is related to musculoskeletal symptoms and worse cardiometabolic indicators.
The purpose of this study is to determine the effect of the "Stand up for your Health®" computer app on sitting time, musculoskeletal symptoms, cardiometabolic markers, and physical activity in office workers. Also, to determine the adherence to the intervention program by identifying barriers and facilitators referred by the participants.
In this 2-arm randomized controlled trial, both groups will be recruited from educational establishments and will be measured at baseline, 3rd, and 6th months. The experimental group will be implementing the "Stand Up for Your Health®" computer app plus educational information, while the control group will only receive educational information.
The same measurements will be completed in both groups during a 6 months follow-up period: sedentary behaviour using the Actigraph accelerometers and the Occupational Sitting and Physical Activity Questionnaire (OSPAQ); musculoskeletal symptoms will be assessed by a pressure pain algometer and the Standardized Nordic Questionnaire of Perception of musculoskeletal Symptoms; and cardiometabolic markers and anthropometric measurements will also be assessed according to protocol.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 106
- office workers over 18 years of age,
- Full-time employees (≥35 hours per week);
- Spend most of their workday sitting (> 60%). This will be initially self-reported and used as selection criteria prior to the initial consent and measurement visit. This will be later confirmed using accelerometers;
- Work in the same office place during the week; and
- Able to walk without using an assistive device or requiring the assistance of another person.
- Pregnant women;
- Desktop workers using a height-adjustable workstation; and
- Office workers sufficiently active according to WHO criteria.
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description Computer prompt + Education (CP+E) Computer prompt "Stand up for your Health®" The intervention group consists of the implementation of the desktop application "Stand up for your Health®" following the model proposed by the Guide to Physical Activity at Work plus education through an information leaflet
- Primary Outcome Measures
Name Time Method Sedentary behaviour (occupational sitting time) at 3rd month During 1 week at T1 (3rd month) Sedentary behaviour will be objectively assessed using accelerometers Actigraph GT3X per a period of one week. Data will be downloaded and analyzed with ActiLife software.
Occupational sitting time shall be measured subjectively using the Occupational Sitting and Physical Activity Questionnaire (OSPAQ).Sedentary behaviour (occupational sitting time) at 6th month During 1 week at T2 (6th month) Sedentary behaviour will be objectively assessed using accelerometers Actigraph GT3X per a period of one week. Data will be downloaded and analyzed with ActiLife software.
Occupational sitting time shall be measured subjectively using the Occupational Sitting and Physical Activity Questionnaire (OSPAQ).Sedentary behaviour (occupational sitting time) at baseline During 1 week at T0 (baseline) Sedentary behaviour will be objectively assessed using accelerometers Actigraph GT3X per a period of one week. Data will be downloaded and analyzed with ActiLife software.
Occupational sitting time shall be measured subjectively using the Occupational Sitting and Physical Activity Questionnaire (OSPAQ).
- Secondary Outcome Measures
Name Time Method Anthropometric measurements - Height At T0 (baseline), T1 (3rd month) and T2 (6th month) Anthropometric measurements outcomes will be carried out following the standardized protocol in this study population. Height in meters (m) will be measured using an altimeter.
Anthropometric measurements - Weight At T0 (baseline), T1 (3rd month) and T2 (6th month) Anthropometric measurements outcomes will be carried out following the standardized protocol in this study population. Weight in kilograms (kg) will be measured using a digital scale.
Musculoskeletal symptoms - Symptoms At T0 (baseline), T1 (3rd month) and T2 (6th month) The standardized Nordic Questionnaire of perception of musculoskeletal symptoms will be used as a subjective measurement, providing a numerical pain scale.
All measurements will be performed by a physiotherapist and following a standardized measurement procedure for office workersAnthropometric measurements - Waist Circumference At T0 (baseline), T1 (3rd month) and T2 (6th month) Anthropometric measurements outcomes will be carried out following the standardized protocol in this study population. Waist Circumference in centimeters (cm) will be measured using a tape measure.
Cardiometabolic biomarkers - Fasting blood glucose At T0 (baseline), T1 (3rd month) and T2 (6th month) Cardiometabolic health outcomes will be carried out following the standardized protocol in this study population. Measurements of fasting blood glucose in milligrams per deciliter (mg/dL) will be collected in blood samples on an empty stomach in the workplace by a trained and certified health professional.
Cardiometabolic biomarkers - Total cholesterol At T0 (baseline), T1 (3rd month) and T2 (6th month) Cardiometabolic health outcomes will be carried out following the standardized protocol in this study population. Measurements of total cholesterol in milligrams per deciliter (mg/dL) will be collected in blood sample on an empty stomach in the workplace by a trained and certified health professional.
Cardiometabolic biomarkers - High density lipoprotein cholesterol At T0 (baseline), T1 (3rd month) and T2 (6th month) Cardiometabolic health outcomes will be carried out following the standardized protocol in this study population. Measurements of high-density lipoprotein (HDL) cholesterol will be collected in a blood sample on an empty stomach in the workplace by a trained and certified health professional.
Anthropometric measurements and blood pressure will be assessed in all participants.Cardiometabolic biomarkers - Fasting insulin At T0 (baseline), T1 (3rd month) and T2 (6th month) Cardiometabolic health outcomes will be carried out following the standardized protocol in this study population. Measurements of fasting insulin in milligrams per deciliter (mg/dL) will be collected in blood samples on an empty stomach in the workplace by a trained and certified health professional.
Cardiometabolic biomarkers - Cortisol At T0 (baseline), T1 (3rd month) and T2 (6th month) Cardiometabolic health outcomes will be carried out following the standardized protocol in this study population. Measurements of cortisol in micrograms per deciliter (mcg/dL)will be collected in blood samples on an empty stomach in the workplace by a trained and certified health professional.
Cardiometabolic biomarkers - Triglycerides At T0 (baseline), T1 (3rd month) and T2 (6th month) Cardiometabolic health outcomes will be carried out following the standardized protocol in this study population. Measurements of triglycerides in milligrams per deciliter (mg/dL) will be collected in blood samples on an empty stomach in the workplace by a trained and certified health professional.
Anthropometric measurements - Body Mass Index At T0 (baseline), T1 (3rd month) and T2 (6th month) Anthropometric measurements outcomes will be carried out following the standardized protocol in this study population. Body Mass Index (BMI) in kilograms per square meters (kg/m2) will be calculated using the weight and height outcome measures.
Cardiometabolic biomarkers - Low density lipoprotein cholesterol At T0 (baseline), T1 (3rd month) and T2 (6th month) Cardiometabolic health outcomes will be carried out following the standardized protocol in this study population. Measurements of low-density lipoprotein (LDL) cholesterol will be collected in a blood sample on an empty stomach in the workplace by a trained and certified health professional.
Musculoskeletal symptoms - Pain At T0 (baseline), T1 (3rd month) and T2 (6th month) A pressure pain threshold algometer shall be used as an objective measurement and will provide a quantitative measurement of sensory perception of mechanical stimuli in kilopascal (kPa) units.
Trial Locations
- Locations (1)
Universidad Autónoma de Chile
🇨🇱Santiago, Chile