@article{ref1,
title="Illness, injury, and correlates of aerobic exercise and walking: a community study",
journal="Research quarterly for exercise and sport",
year="1991",
author="Hofstetter, C. Richard and Hovell, Melbourne Frank and Macera, Caroline A. and Sallis, James F. and Spry, V. and Barrington, E. and Callender, L. and Hackley, M. and Rauh, M.",
volume="62",
number="1",
pages="1-9",
abstract="This study explores differences in exercise and walking behavior among subjects who reported temporary or long-term illnesses or injuries serious enough to have limited physical activities. The study is primarily concerned with specifying similarities and differences in correlates of vigorous exercise and walking among illness/injury groups in comparison to a healthy sample. Subjects in the analysis (N = 2,053) were drawn from a multiwave mailed survey of a probability sampling of the adult population residing in households in San Diego, California. Although differences were found in correlates of walking and vigorous exercise among the groups, self-efficacy, the belief that one is able to perform specific activities, was the most powerful and statistically significant correlate of both walking and vigorous exercise among all groups.",
language="",
issn="0270-1367",
doi="",
url="http://dx.doi.org/"
}