The role of the systemic milieu in preventing motor unit remodelling and loss during ageing

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Motor unit remodeling and loss contributes to the decline in muscle mass, strength and quality of life in our aging population. Recent data shows that exposing aged mice to 'blood-borne factors' from the circulation of a young mouse can reverse the age-associated deficits in motor unit structure and function. A better understanding of the factors controlling these anti-aging effects will be vital for finding new compounds to reverse the aging process and improve quality of life.