@article{ref1,
title="Physiological and performance changes in athletic conditioning",
journal="Journal of applied physiology (APS DC)",
year="1950",
author="Henry, F. M. and Berg, William E.",
volume="3",
number="2",
pages="103-111",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0021-8987",
doi="",
url="http://dx.doi.org/"
}