 ignoring the fact that auto-calibration is not designed for
short lab settings. It needs free-living data to work properly. Further,
studies are often not clear about how the problematic zero imputation
during the idle sleep mode in ActiGraph devices is dealt with.</p>
</div>
<div class="section level3">
<h3 id="notes-on-implementation-of-zero-crossing-counts">Notes on implementation of zero crossing counts<a class="anchor" aria-label="anchor" href="#notes-on-implementation-of-zero-crossing-counts"></a>
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