[The use of Bourdon's test in the study of changes of efficiency in the course of lessons].
D000293:Adolescent; D004526:Efficiency; D006173:Gymnastics; D006801:Humans; D010809:Physical Fitness; D012572:School Health Services; D014829:Vocational Education
GYMNASTICS/in adolescence; PHYSICAL FITNESS/in adolescence; SCHOOL HEALTH; VOCATIONAL EDUCATION