Final answer:
The statement about adjusting from marathon running to enjoying shorter walks exemplifies a positive and adaptable approach to the physical limitations of aging.
Step-by-step explanation:
The statement by an older adult client that best reflects a healthy adjustment to the aging process and its physical limitations is: I used to run in marathons, but now I truly enjoy a 1-mile walk around the park. This statement demonstrates a positive attitude towards adapting physical activities in response to the body's changes with age. It exemplifies a commitment to maintaining an active lifestyle despite reduced capability, which is crucial for mitigating the physical declines associated with aging. Studies show that continuing to exercise and live actively can slow down age-related deterioration and help maintain good health even into advanced old age.