Clinical Trial on Ergonomics - Clinical Trials Registry

Study Overview

Status

Completed

Conditions

Ergonomics

Study Type

Observational

Enrollment (Actual)

200

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

Egypt
- - Cairo, Egypt
    - AAA

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

7 years to 9 years (Child)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

Two hundred and fifty-seven normal children were evaluated for eligibility; thirty-five children were excluded because they failed to fulfill the inclusion criteria and sixteen parents refused to enrolled in this study.

Description

Inclusion Criteria:

had normal body mass index (ranged from 18.5 to 24.9 kg/ m2),
The school furniture workstations used by all subjects were all of wooden flat desks and benches.

Exclusion Criteria:

suffering from respiratory or heart problems

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
weight Time Frame: up to 24 weeks	measured in kilograms	up to 24 weeks
height Time Frame: up to 24 weeks	measured in centimetres	up to 24 weeks
Body mass index (BMI) Time Frame: up to 24 weeks	It was calculated as the ratio of the subject's height (in meter) and weight (in kilogram) i.e. BMI= Weight/ Height2	up to 24 weeks
anthropometric measurement for child Time Frame: up to 24 weeks	The anthropometric measurement for child were measured in mm by Auto CAD analysis for recorded photographs from sitting position.it include:1) elbow seat height: Measured with the elbow flexed at 90°, as the vertical distance from the bottom of the tip of the elbow to the student's seated surface, 2) shoulder height: Measured as the vertical distance from the top of the shoulder at the acromion process to the student's sitting surface,3) upper limb length: Difference between the elbow height and shoulder height.	up to 24 weeks
anthropometric measurement for school furniture Time Frame: up to 24 weeks	The furniture dimensions were measured in mm by Auto CAD analysis for recorded photographs from sitting position.it include: 1) seat height: Measured as a distance from the floor to the highest point on the front of the seat, 2) seat depth: Measured from the back of the sitting surface of the seat to its front,3) backrest height: The vertical distance from the desk seat to the top edge of backrest, 4)desk- seat height: The vertical distance from the seat to the top of the front edge of the desk and 5) under surface of desk height: The vertical distance from the floor to the bottom of the front edge of the shelf under the writing surface..	up to 24 weeks

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Correlation between educational furniture dimensions and the user body dimensions Time Frame: through study completion, an average of 1 year.	the percentage of compatibility for the ergonomics design of school furniture were tested by using the following equations: Equation (1): Seat height to popliteal height (N +2) cos 30°≤ SH < (N + 2) cos 5° Where SH is seat height and N is popliteal height). Equation (2): Seat depth to the popliteal-buttock length 80%M≤ SD < 95%M Where SD is seat depth and M is popliteal-buttock length. Equation (3): Backrest height:60% H≤ BH < 80% H Where BH is backrest height and H is shoulder height (scapula height). the previous equations represent the correlation between arthopemeteric measurements for the child (the user) and anthropometric measurement for school furniture.The percentage of matching and dis-matching school furniture calculated.	through study completion, an average of 1 year.
Head postures (angles) Time Frame: through study completion, an average of 1 year.	Auto CAD program (version 2013) used to determine head postures (angles). 1) Head flexion angle: Line of canthus to tragus with respect to vertical (measured from vertical above intersect). 2) Neck flexion angle : Line of tragus to C7 with respect to vertical (measured from vertical above intersect)	through study completion, an average of 1 year.
scapular postures (displacement and elevation). Time Frame: through study completion, an average of 1 year.	Auto CAD program (version 2013) used to determine scapular postures (displacement and elevation in mm). 1) Scapula displacement: Horizontal distance between markers at C7 and the anterior border of the acromion (measured in mm), 2)Scapula elevation: Vertical distance between markers at C7 and the anterior border of the acromion.	through study completion, an average of 1 year.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Delta University for Science and Technology

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

March 1, 2017

Primary Completion (Actual)

April 30, 2019

Study Completion (Actual)

April 30, 2019

Study Registration Dates

First Submitted

February 6, 2021

First Submitted That Met QC Criteria

February 16, 2021

First Posted (Actual)

February 17, 2021

Study Record Updates

Last Update Posted (Actual)