Abstract: Disclosed herein are ?7?1 integrin modulatory agents and methods of using such to treat conditions associated with decreased ?7?1 integrin expression or activity, including muscular dystrophy. In one example, methods for treating a subject with muscular dystrophy are disclosed. The methods include administering an effective amount of an ?7?1 integrin modulatory agent to the subject with muscular dystrophy, wherein the ?7?1 integrin modulatory agent increases ?7?1 integrin expression or activity as compared to ?7?1 integrin expression or activity prior to treatment, thereby treating the subject with muscular dystrophy. Also disclosed are methods of enhancing muscle regeneration, repair, or maintenance in a subject and methods of enhancing ?7?1 integrin expression by use of the disclosed ?7?1 integrin modulatory agents. Methods of prospectively preventing or reducing muscle injury or damage in a subject are also disclosed.