<h1>Human Balance Evaluation Database</h1>

<p><strong>Published:</strong> May 19, 2016. Version: 1.0.0</p>

<p><strong>New Database Added:</strong> HBEDB (May 19, 2016, midnight)</p>

<p>The Human Balance Evaluation database contains force platform recordings from 193 subjects undergoing stabilography tests.</p>

<h2>Citation</h2>

<p>

When using this resource, please cite the original publication:<br>

Santos DA, Duarte M. <em>A Public Database of Human Balance Evaluations.</em> PeerJ Preprints 4:e2162v1, 2016.

</p>

<p>

Please include the standard citation for PhysioNet:<br>

Goldberger, A., Amaral, L., Glass, L., Hausdorff, J., Ivanov, P. C., Mark, R., ... & Stanley, H. E. (2000). 

<em>PhysioBank, PhysioToolkit, and PhysioNet: Components of a new research resource for complex physiologic signals.</em> 

Circulation [Online]. 101 (23), pp. e215–e220.

</p>

<h2>Abstract</h2>

<p>

The HBEDB contains force platform recordings from subjects undergoing stabilography tests. 

The subjects performed standing tasks under four different conditions: 

<ul>

  <li>Eyes opened on a rigid surface</li>

  <li>Eyes closed on a rigid surface</li>

  <li>Eyes opened on an unstable surface</li>

  <li>Eyes closed on an unstable surface</li>

</ul>

Each condition was tested three times, with the order randomized per subject. 

A total of 1930 trials were performed by 163 different subjects.

</p>

<h2>Data Description</h2>

<p>

Each 1-minute recording was sampled at 100 Hz and low-pass filtered at 10 Hz. 

The signal files contain 8 channels grouped by 3 measurement types:

</p>

<ul>

  <li><strong>Force/N</strong> – x, y, z</li>

  <li><strong>Moment/Nm</strong> – x, y, z</li>

  <li><strong>Center-of-Pressure/cm</strong> – x, y</li>

</ul>

<p>File naming convention: <code>BDS0XXXX</code> where <code>XXXX</code> is the trial number.</p>

<h2>Qualitative Tests</h2>

<p>

Each subject completed the following assessments:

<ul>

  <li>Short Falls Efficacy Scale International</li>

  <li>International Physical Activity Questionnaire – Short Version</li>

  <li>Trail Making Test</li>

  <li>Mini Balance Evaluation Systems Test</li>

</ul>

</p>

<p>

Subjects were also interviewed for socio-cultural, demographic, and health information, 

including age, medications, and illnesses. This metadata is available in <code>BDSinfo.txt</code> 

and <code>BDSinfo.xlsx</code>. Some fields are also found in each record's header file.

</p>

<h2>More Information</h2>

<p>

For more about this project and metadata, visit the website of the <strong>BMC-Lab</strong> 

at the Federal University of ABC.

</p>