Solcová, I The heart rate response to psychological challenge is higher in children displaying lower physical activity. [electronic resource] - Activitas nervosa superior Mar 1990 - 40-2 p. digital Publication Type: Journal Article ISSN: 0001-7604 Subjects--Topical Terms: Cardiovascular Physiological PhenomenaChildExercise--physiologyHeart RateHumansMalePhysical Exertion--physiology