title: [Radiotelemetric studies on heart rates of 10 year old boys and girls during a 3000 m-run on the sports field and on the treadmill (author's transl)].
abstract: The behaviour of heart rates of 25 untrained boys and 25 untrained girls between 9.5 and 10.5 years of age was registered telemetrically before, during and after a 3000m-run with a finish on the sportsfield and during a run over the same distance with the equivalent but constant speed on a treadmill. Additionally an exhausting spiroergometric test on a bicycle in a sitting position (method: W/kg body weight) was carried out. With a self-determined intensity the boys passed the 3000 m-distance in a shorter time than the girls. During the run the girls' heart rates remained relatively constant between 190 and 204 per min, whereas the boys' heart rates were significantly lower (about 10/min). Children with a higher relative oxygen capacity (56 ml O2/kg) run faster and revealed lower heart rates than children with less relative oxygen capacity (39.8 ml O2/kg). The same results were obtained when children with lower body weight were compared to heavier children of the same size.
mesh_terms: D001835:Body Weight; D002648:Child; D005080:Exercise Test; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D010101:Oxygen Consumption; D012420:Running; D012737:Sex Factors; D013147:Spirometry; D013686:Telemetry
vernacular_title: Radiotelemetrische Untersuchungen der Herzfrequenz während eines 3000 m-Laufs auf dem Sportplatz und auf dem Laufband bei 10 jährigen Schülern und Schülerinnen.