title: [Ergometric determination of cardiac output in 1500 Swiss children and adults of both sexes, aged 5 to 65 years. Relation to body constitution, sex, age and work capacity in the step test (Part 2)].
abstract: The stroke volume of the heart during exercise in upright position (steptest) was determined in 1500 Swiss children and adults of either sex, aged 5 to 65 years. The use of the simplified ergometric method (Strehler) allowed to carry out these determinations mainly in series and without any difficulty. Average absolute values are presented for each year during childhood and adolescence and for each decade in the period of adult life. The stroke volume is lower in the female than in the male group; this refers to absolute values as well as to values relative to body size. The absolute values are approximately proportional to body weight, to the cube of body height and to a standard volume calculated from body height and body weight. There is a typical age-depending course of the relationship between stroke volume and body size (standard volume), the development of the stroke volume showing a minimum before and a maximum during puberty. Provided work load in per cent of the maximal working capacity is the same the stroke volume of the heart during exercise in upright position remains unchanged until the age of about 55 to 60 years. The practical scope of the investigation was to collect data for the setting up of a new stroke volume standard.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002302:Cardiac Output; D002648:Child; D002675:Child, Preschool; D005260:Female; D006306:Health Surveys; D006801:Humans; D008297:Male; D008875:Middle Aged; D005082:Physical Exertion; D012737:Sex Factors; D013557:Switzerland
vernacular_title: Ergometrische Bestimmung des Herzschlagvolumens bei 1500 schweizerischen Kindern und Erwachsenen beiderlei Geschlechts im Alter von 5 bis 65 Jahren). Abhngigkeit von Körperbau, Geschlecht, Lebensalter und Arbeitsleistung beim Steptest (2.Teil)