There is compelling evidence that a sedentary and unfit way of life increases the risk of numerous chronic diseases and conditions and decreases longevity.1,2 Heretofore, exposure assessments of sedentary living habits have included self-reports of physical activity,3- 6 job classifications,7 and measurement of cardiorespiratory fitness.8- 10 All of these methods are subject to misclassification. Self-report questionnaires may not include appropriate questions to fully capture all relevant activities, or individuals may have inadequate or inaccurate recall. Individuals working within the same job classification may have widely varying levels of energy expenditure due to efficiency of performing the same tasks, or the tasks may have different energy requirements. Cardiorespiratory fitness assessments are objective laboratory measurements and are generally an accurate indication of physical activity during the weeks and months preceding the test but also may be influenced by other environmental and genetic factors.
Register and get free email Table of Contents alerts, saved searches, PowerPoint downloads, CME quizzes, and more
Subscribe for full-text access to content from 1998 forward and a host of useful features
Activate your current subscription (AMA members and current subscribers)
Purchase Online Access to this article for 24 hours
Some tools below are only available to our subscribers or users with an online account.
Download citation file:
Web of Science® Times Cited: 22
Customize your page view by dragging & repositioning the boxes below.
More Listings atJAMACareerCenter.com >
and access these and other features:
Enter your username and email address. We'll send you a link to reset your password.
Enter your username and email address. We'll send instructions on how to reset your password to the email address we have on record.
Athens and Shibboleth are access management services that provide single sign-on to protected resources. They replace the multiple user names and passwords necessary to access subscription-based content with a single user name and password that can be entered once per session. It operates independently of a user's location or IP address. If your institution uses Athens or Shibboleth authentication, please contact your site administrator to receive your user name and password.