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OpenTrials
Completed

NCT Number: NCT02725645

Backpack Load and Spine Muscles Activity

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.

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Key information

Conditions

Child

Age range

6 year–10 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • children with tutor consent

Exclusion criteria

  • children with cognitive impairment

Treatment and study plan

loading conditions

Other

Different backpack loading conditions 0%, 10%, 15% and 20% allocated randomly

Primary outcomes

  1. 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.

Sponsors and collaborators

Lead sponsor

University Fernando Pessoa

Other

Registry information

Official study title

Influence of Different Backpack Loading Conditions on Neck and Lumbar Muscles Activity of Elementary School Children

Acronym: BLSMA

Important dates

Study start
2014
Primary completion
2015
Study completion
2015
First posted
Apr 1, 2016
Registry last updated
Oct 28, 2019

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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