@article{ref1,
title="Physical Fitness and Self-sufficiency in Persons Over 60 Years",
journal="Activities, adaptation and aging",
year="1983",
author="Flatten, Kay",
volume="3",
number="2",
pages="69-78",
abstract="The physical fitness factors of flexibility and muscular strength are discussed with respect to people over 60 years of age. Changes in joint ranges of motion and maximal muscular strength occurring with increasing age are presented. The relevance of these changes to activities of daily living and the maintenance of an independent lifestyle are the major theme of this article.<p />",
language="",
issn="0192-4788",
doi="10.1300/J016v03n02_11",
url="http://dx.doi.org/10.1300/J016v03n02_11"
}