Final answer:
True. Loss of muscle density in older adults can result in muscles becoming nonfunctional, which can lead to various impairments and medical problems.
Step-by-step explanation:
The statement, 'Continued loss of muscle density for older adults can result in muscles becoming nonfunctional' is true. As people age, there is a gradual decrease in the ability to maintain skeletal muscle function and mass, known as sarcopenia. This can lead to a loss of strength, trouble with locomotion, balance, and posture, and an increase in medical problems and injuries due to falls.