@article{ref1,
title="Optimizing health in older persons: aerobic or strength training?",
journal="Exercise and sport sciences reviews",
year="1998",
author="Hurley, B. F. and Hagberg, J. M.",
volume="26",
number="",
pages="61-89",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0091-6331",
doi="",
url="http://dx.doi.org/"
}