A sample of Californians was surveyed to explore differences in aerobic exercise and walking behavior among healthy subjects and subjects with illness/injury serious enough to limit physical activity. Results indicate different patterns of determinants of exercise within various illness/injury groups. This implies interventions to increase…

Presents current information on exercise, immunity, and infection in athletes and active people, focusing on well-established immunologic changes and practical clinical aspects of common infections. The article also guides physicians on what to advise active and athletic patients. (SM)

Examines current guidelines for physical fitness, noting issues that may influence the updating of the American College of Sports Medicine exercise statement. Differences between exercise prescription for fitness and physical activity for health are discussed, noting the importance of designing individualized programs with appropriate levels of…

The second of a two-part series on contraindications to athletic activity, this article examines the sensory, spinal, gastrointestinal, systemic, hematologic, and dermatologic conditions that warrant activity disqualification and provides guidelines about when it is safe to participate. Activity considerations for individuals who have lost a…

In a roundtable discussion, a panel of experts address how physicians can identify active patients for whom exercise poses the risk of serious heart complications, how useful stress tests are, what exercise intensity is best, and what physicians can tell patients about the risks of exercise versus its benefits. (SM)