Submaximal cardiovascular responses to exercise in children: treadmill versus cycle ergometer

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Deutscher übersetzter Titel:Herz-Kreislauf-Reaktionen auf submaximale koerperliche Belastung bei Kindern: Laufband- versus Fahrradergometrie
Autor:Turley, K.R.; Wilmore, J.H.
Erschienen in:Pediatric exercise science
Veröffentlicht:9 (1997), 4, S. 331-341, Lit.
Format: Literatur (SPOLIT)
Publikationstyp: Zeitschriftenartikel
Medienart: Gedruckte Ressource
Sprache:Englisch
ISSN:0899-8493, 1543-2920
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Erfassungsnummer:PU199802209728
Quelle:BISp

Abstract des Autors

This study investigated whether cardiovascular responses at a given submaximal oxygen consumption (VO2, L/min) are different between the treadmill (TM) and cycle ergometer (CE). Submaximal cardiovascular measurements were obtained at three work rates on both the TM and CE in 7- to 9-year-old children (12 males and 12 females). Using regression analysis, it was determined that there were no differences between the TM and CE in cardiac output (L/min), stroke volume (SV, ml/beat) or heart rate (beats/min) at a given VO2 (L/min). There were differences in the total peripheral resistance (TPR, units) and arterial-venous oxygen difference (a-vO2 diff, ml/100 ml) to VO2 (L/min) relationship. While there were statistically significant differences in TPR and a-vO2 diff between the two modalities, there was substantial overlap of individual values at any given sumaximal VO2, thus the physiological significance is questionable. Hence, we conclude that in 7- to 9-year old children there are no differences in submaximal cardiovascular responses between the CE and TM. Verf.-Referat