A method of treating or preventing impaired mobility in an older adult includes administering to the older adult an effective amount of a composition containing at least one ingredient for cognitive ability, at least one ingredient for muscle and/or bone quality, and at least one ingredient for joint quality and/or functionality. The older adult can be an elderly individual and/or can have a condition that is one or more of frailty, pre-frailty, sarcopenia, recovering from sarcopenia, malnutrition, at risk of malnutrition, undergoing rehabilitation, and being scheduled to undergo rehabilitation, disorders impacting mobility such as osteoporosis, osteoarthritis, pre-osteoarthritis, osteopenia, cognitive decline. In a non-limiting example of the composition, the at least one ingredient for muscle and/or bone quality and the at least one ingredient for joint quality include a protein source, omega-3 fatty acids, and a polyphenol.