Books are shelved in general subject categories using the Library of Congress classification system. You may want to supplement your use of the catalog with browsing shelf areas for your topic.
BF -- Psychology
GV -- Sports, Recreation, Leisure
QP -- Physiology
R -- Medicine
Encyclopedia of Human Nutrition
Encyclopedia of Lifestyle Medicine and Health by 
Encyclopedia of Public Health by 
Encyclopedia of Recreation and Leisure in America by 
Encyclopedia of Sports Medicine by 
Encyclopedia of Substance Abuse Prevention, Treatment, and Recovery by 
The SAGE Encyclopedia of Cancer and Society by 
