American literature 1 American literature -- 20th century -- History and criticism 1 Culture 1 Dance-Research 1 Employee motivation 1 English literature -- History and criticism 1 English-speaking countries -- Intellectual life 1 Health-Research 1 Kinesiology, Applied 1 Motor activity 1 Physical education and training 1 Physical education and training-Research 1 Popular culture 1 Recreation-Research 1 Research design 1 Sports medicine 1