Cardiac responses of young women to conditioning for a 10 kilometer race
Deutscher übersetzter Titel: | Kardiale Anpassungen an ein Konditionstraining zu einem 10-km-Lauf bei jungen Frauen |
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Autor: | Wolfe, L.A.; Laprade, A.; Burggraf, G.W.; Norman, R. |
Erschienen in: | International journal of sports medicine |
Veröffentlicht: | 13 (1992), 5, S. 384-389, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
Sprache: | Englisch |
ISSN: | 0172-4622, 1439-3964 |
DOI: | 10.1055/s-2007-1021285 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU199211060202 |
Quelle: | BISp |
Abstract
Seven previously sedentary women (mean age, 19 yrs) participated in an 11-week running program (4-5 sessions/week) in preparation for a 10 km race. Training intensity was 80-85 of maximum heart rate reserve. Exercise duration began at 20 minutes/session and was lengthened 5 minutes/session every 2 weeks. A control group consisting of 4 women was also evaluated. Maximal oxygen uptake (VO2max, ml/kg/min) increased 11 in the trained group and decreased 6 in the control group during the study (p<0.05). Oxygen uptake, cardiac output (Q), and stroke volume (SV) increased significantly (p<0.05) in the trained group during each of 3 levels of steady state cycle ergometer exercise (heart rate targets: 115, 135 and 155 beats/min, respectively). Arteriovenous oxygen difference (a-vO2 diff) was not increased significantly after training. Resting left ventricular dimensions and performance evaluated by echocardiography also did not change significantly after training. It was concluded that short-term conditioning in this population results in an increased exercise Q without concomitant increases in left ventricular dimensions or arteriovenous oxygen difference. Verf.-Referat