Research (2) Id (Psychology) (2) Ejercicios (2) Estudio (2) Investigación (2) Ello (2) Labor (1) Teachers (1) Students (1) Quality of products (1) Physical education and training (1) Measurement (1) Learning, Psychology of (1) Joints (1) Harmony (1) Gymnastics (1) Demonstrations (1) Chemical elements (1) Bibliography (1) Athletes (1) Aesthetics (1) Clave (1) Gimnasia artística (1) Técnicos (1) Manifestaciones (1) Atletas (1) Calidad (1) Estudiantes (1) Gimnasia (1) Profesores (1)