Final answer:
Older adults should engage in strength program activities that involve all major muscle groups on at least 2 days per week, as part of their physical activity routine to improve health and lower chronic disease risk.
Step-by-step explanation:
The recommended strength program guidelines for an older adult are to do muscle-strengthening activities on 2 or more days per week. These activities should involve all major muscle groups and be at least of moderate intensity. The U.S. Department of Health and Human Services suggests that these strengthening activities, such as push-ups, sit-ups, squats, and weight lifting, can lead to improved cardiovascular and muscular fitness, increased bone density and strength, and better cognitive function. It is also in line with the aim for adults to improve health and reduce chronic disease risk through physical activity.