Effects of Adjustable School Furniture

Sedentary Lifestyle Clinical Trial

Official title:

Effects of Adjustable School Furniture on Health-related Parameters in Students

Clinical Trial Details — Status: Not yet recruiting

Administrative data

• NCT number: NCT03653767
• Other study ID #: Classroom Ergonomics
• Status: Not yet recruiting
• Phase: N/A
• Start date: December 1, 2019
• Est. completion date: April 1, 2020

Study information

• Verified date: October 2019
• Source: University of Primorska
• Contact: Nejc Sarabon, Phd
• Phone: +386 5 662 64 66
• Email: nejc.sarabon[@]fvz.upr.si
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The aim of this study is to evaluate the level of mismatch between students and school furniture and to assess the effects of adjustable furniture on sedentary behavior, physical activity levels, and sitting posture in students. Firstly, we will obtain the anthropometric measures of all students participating in the study. Secondly, we will calculate the mismatch between the student's anthropometric measures and current school furniture. In the next step, the participants will be separated in two groups, the experimental and the control group. The participants in the experimental group will use adjustable school furniture for one week, whereas the control group will use the conventional school furniture. All the participants will wear an accelerometer for five consecutive days. The results obtained will indicate the furniture mismatch prevalence and demonstrate the effects of adjustable furniture on health-related parameters in students.

Description:

Sedentary behavior is a risk factor affecting not only working population but also adolescents. Students spend long period of time seated, which is being associated with reports of musculoskeletal discomfort and pain. The high level of mismatch between students and school furniture is being associated with adolescent lower back pain. The aim of this study is to evaluate the level of mismatch between students and school furniture and to assess the effects of adjustable furniture on sedentary behavior, physical activity levels, and sitting posture in students. Before the experimental part of the study, we will obtain the anthropometric measures of all students participating in the study to calculate the mismatch between the students and the school furniture. In the next step, the participants will be separated to the experimental or the control group. The experimental group will use adjustable school furniture for one week whereas the control group will use the conventional school furniture. All the participants will wear an accelerometer for five consecutive days. The participants will also complete questionnaires about the sedentary behavior and physical activity levels. The sitting posture will be evaluated with Rapid Upper Limb Assessment tool (RULA). Moreover, at the baseline and on the last day of measurements we will measure the classroom environment factors (light, noise, air flow, temperature). The results obtained will indicate the furniture mismatch prevalence and demonstrate the effects of adjustable furniture on health-related parameters in students.

Recruitment information / eligibility

• Status: Not yet recruiting
• Enrollment: 30
• Est. completion date: April 1, 2020
• Est. primary completion date: March 1, 2020
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 16 Years to 24 Years

Eligibility

Inclusion Criteria:

• aged between 16 and 24 years

• student

Exclusion Criteria:

• body mass index > 30kg/m2

• pain presence in any musculoskeletal part > 3 on 10-level scale

• presence of any non-communicable chronical diseases

• pregnancy

Related Conditions & MeSH terms

• Sedentary Lifestyle

Intervention

Device:
• Adjustable Furniture
The intervention will include adjustable school furniture.

Locations

Country	Name	City	State
Slovenia	Carpenter High School Skofja Loka	Skofja Loka

Sponsors (2)

Lead Sponsor	Collaborator
University of Primorska	Innorenew CoE

Country where clinical trial is conducted

Slovenia, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Change of weekly physical activity levels	Weekly physical activity levels will be measured with accelerometers.	5 days
Primary	Change of sitting time	Weekly sitting time will be measured with accelerometers.	5 days
Secondary	Adolescent Sedentary Activity Questionnaire	The Adolescent Sedentary Activity Questionnaire is used to subjectively assess sedentary behavior. Students are asked to think about a normal week, during school term, and to report how long they usually spent engaged in 11 different sedentary behaviors before and after school on each day of the week and on each day of the weekend. If two activities occurred at the same time (e.g., one hour in front of the television doing homework) the students are asked to estimate how much time was spent on each activity during that time (e.g., 45 min television and 15 min homework). Time spent in each category is calculated and time is also summed across categories to yield the total time per week spent in sedentary behavior. Higher outcome values present longer time in sedentary behavior (worse outcome).	Baseline and after 5 days.
Secondary	Physical Activity Questionnaire for Adolescents	Physical Activity Questionnaire for Adolescents is used to subjectively assess physical activity levels. The questionnaire addresses a habitual week. It consists of three sections, including physical activity in school, during transportation and leisure-time. Each section is further divided into different activity categories. School section: physical education and breaks between lessons. Transportation section: walking and cycling at least 10 minutes at a stretch. Leisure-time section: activities at least 10 min long. A measure of physical activity is then reached by multiplying the time spent for each activity with the corresponding metabolic equivalent (MET-value). Higher outcome value is better, since it indicates a higher level of physical activity and MET values.	Baseline and after 5 days
Secondary	Anthropometric measurements of the students performed with anthropometer	Anthropometric measurements will be performed to obtain the main measures that are needed to evaluate the user-furniture mismatch. All the measures will be taken with standard anthropometer, the unit of measure will be centimeter. We will measure Popliteal height, Buttock-popliteal length, Subscapular height, Thigh thickness. Elbow height sitting, Shoulder height sitting. With the measures obtained we will calculate the furniture mismatch for the following: Seat height, Seat depth, Seat to desk clearance, Desk height, Seat width, Upper edge of backrest. Higher percentage of the mismatch between the student's anthropometric measures and furniture indicates a worse outcome.	Baseline
Secondary	Sitting posture	The sitting posture will be evaluated with RULA (Rapid Upper Limb Assessment) tool.	Baseline and after 5 days