Influence of Different Backpack Loading Conditions on Neck and Lumbar Muscles Activity of Elementary School Children
Trial Snapshot
- Phase
- Not Applicable
- Status
- Completed
- Sponsor
- University Fernando Pessoa
- Enrollment
- 14
- Primary Endpoint
- Muscle Activity as a Measure of Route Mean Square
Study Overview
Brief Summary
The purpose of the present study is to analyze the influence of four backpack loading conditions (0, 10, 15 and 20% of body weight) on the electromyographic activity of the neck and lumbar muscles of elementary school children.
Detailed Description
Elementary school children participated in the present study, between the ages of 6 and 10. Bilateral sternocleidomastoid, rectus abdominis and erector spinae muscles activity were recorded using surface electromyography (sEMG), while tested for the effect of four randomized backpack loading conditions.
Study Design
- Study Type
- Interventional
- Allocation
- Na
- Intervention Model
- Single Group
- Primary Purpose
- Basic Science
- Masking
- None
Eligibility Criteria
- Ages
- 6 Years to 10 Years (Child)
- Sex
- All
- Accepts Healthy Volunteers
- Yes
Inclusion Criteria
- •children with tutor consent
Exclusion Criteria
- •children with cognitive impairment
Arms & Interventions
Healthy school children
elementary school children will be presented with different backpack loading conditions
Intervention: loading conditions (Other)
Outcomes
Primary Outcomes
Muscle Activity as a Measure of Route Mean Square
Time Frame: one year
EMG signals were initially filtered with a Notch Filter of 50hz, due to the DC power line, using MATLAB 7.11 (v.2010). The signal was then detrended, converted into millivolts and normalized. the normalized signal was then used to calculate the route mean square.
Secondary Outcomes
No secondary outcomes reported
Investigators
Sandra Rodrigues
Lecturer
University Fernando Pessoa