The loss of speed, muscle strength and dexterity is common in older people and has been linked to dementia, disability and death - though a very basic practice could slow this process down.
Rush University Medical Center found through a number of tests that less-frequent participation in social activities could lead to the rapid decline of mental and physical abilities.
Dr Aron Buchman, the associate professor of neurological sciences at the medical institution, explained that if the causal relationship is confirmed by other research, the implications could be "enormous" for interventions with the elderly.
He continued: "Our data raises the possibility that we can slow motor decline and possibly delay its adverse health outcomes by supporting social engagement - a relatively low-cost solution to a very large public health problem."
Earlier in the month, the Nintendo Wii was named as a social way of relieving the symptoms of Parkinson's disease - namely tremors and depression - highlighting a high-tech and fun way to complement recent research from Rush University.
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