Final answer:
Strength training exercises, such as weightlifting and resistance training, help to build muscle mass and improve muscular strength in older adults.
Step-by-step explanation:
To train muscular activity in older adults, at least 2 strength days are recommended. Strength training exercises, such as weightlifting and resistance training, help to build muscle mass and improve muscular strength. This is especially important for older adults as they tend to experience muscle atrophy with age, which can lead to a loss of strength and mobility. By incorporating strength training exercises into their routine, older adults can maintain or increase their muscular strength and overall physical function.