Medicine and science in sports and exercise
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Med Sci Sports Exerc · Apr 2005
Randomized Controlled Trial Clinical TrialResponsiveness of continuous ratings of dyspnea during exercise in patients with COPD.
To examine the responsiveness of a new computerized method for patients to provide continuous ratings of dyspnea during exercise in patients with chronic obstructive pulmonary disease (COPD). ⋯ Continuous ratings of dyspnea were responsive to inhaled bronchodilator therapy during both incremental and constant work exercise tests in patients with symptomatic COPD.
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Med Sci Sports Exerc · Apr 2005
Physical activity among adults >or=50 yr with and without disabilities, BRFSS 2001.
Before 2001, the Behavioral Risk Factor Surveillance System (BRFSS), a national survey of health behaviors, assessed only leisure-time physical activity. In 2001, the BRFSS used newly developed physical activity items to evaluate combined leisure-time, household, and transportation activities. Using BRFSS 2001 data, this cross-sectional study describes the prevalence of inactivity and insufficient and recommended physical activity for older adults (i.e., aged >or=50 yr). ⋯ Not all persons with disabilities can be active at recommended levels, but it is possible for the vast majority to do some types of physical activity, even if at insufficient levels. Thus, it may be possible for the prevalence of inactivity among persons with and without disabilities to be similar. This was not found. At the start of the new millennium, almost 60% of older adults without disabilities and 70% with disabilities were not obtaining a recommended amount of combined leisure-time, transportation, and household physical activity.