A functional and therapeutic classification for prescription of physical
activity for cardiac patients.
- Class I: patients with no limitation of activities; they suffer no symptoms from
ordinary activities.
- Class II: patients with slight, mild limitation of activity; they are comfortable with
rest or with mild exertion.
- Class III: patients with marked limitation of activity; they are comfortable only at
rest.
- Class IV: patients who should be at complete rest, confined to bed or chair; any
physical activity brings on discomfort and symptoms occur at rest.
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