Good morning. This one is for the nerds. Check out Assessment and Treatment of Muscle Imbalances. I used this book for my last grad course (Kin 6301 Functional Assessment of Movement). Really encourages you to think about: the role of movement screening in developing exercise programs, how movement dysfunction contributes to orthopaedic injury risk, principles behind evaluating posture and locomotion, and evaluating the evidence behind common movement screening and assessment approaches. Happy reading!
Reference
Page, P., Lardner, R., & Frank, C. (2010). Assessment and treatment of muscle imbalances: The Janda approach. Champaign, IL: Human Kinetics.
-Michael McIsaac