@article{ref1,
title="A comparison of sprain and strain injury rates during aerobic/calisthenic and aerobic/circuit weight training programs",
journal="Military medicine",
year="1987",
author="Marcinik, J. and Hodgdon, J. A. and O'Brien, J. J.",
volume="152",
number="5",
pages="252-254",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0026-4075",
doi="",
url="http://dx.doi.org/"
}