Weights and measures (1) Spaniards (1) Research (1) Psychology (1) Perspective (1) Equations (1) Athletes (1) Anxiety (1) Deportistas (1) Ecuaciones (1) Pesos y medidas (1) Perspectiva (1) Investigación (1) Ansiedad (1) Psicología (1) Españoles (1) dé (1)