@article{ref1,
title="Leisure time physical activity as an intervening variable in research",
journal="Health education",
year="1980",
author="Blair, S. N. and Pate, R. R. and Blair, Aaron and Howe, H. G. and Rosenberg, M. and Parker, G. M.",
volume="11",
number="1",
pages="8-11",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0097-0050",
doi="",
url="http://dx.doi.org/"
}