RESUMO
The purpose of this study was to investigate the effects of taekwondo training on VO2max, MVO2 and electrocardiogram ST slope, QRS duration in college woman. Subject were divided into two groups, one is taekwondo group (n=11) and the other is control group (n=10). They participated in graded exercise test (Balke protocol) and measured aerobic capacity and electrocardiogram. The aerobic capacity (VO2max and AT) was measured by autogas analyser. The resting and exercise rate-pressure product (RPP) could be measured with HR and systolic BP for MVO2 measurement. The electrocardiogram ST slope, QRS duration was calculated using automated software program (QMC). The measured data were analyzed by using paired t -test. The results of this study were as follows : There was a significant difference of VO2max and AT between taekwondo group and control group. VO2max of taekwondo group was 4~5 mL/kg/min higher than control group (p<0.01) and AT also taekwondo group was 3.4% higher than control group (p<0.05). There was no significant difference of maximal exercise MVO2 between taekwondo and control group. There was no significant difference of electrocardiogram ST slope between group but rest QRS duration in taekwondo group was longer than the control group (p<0.01). Conclusively, these data suggest that regular taekwondo training will strengthen on aerobic capacity and resting slow heart beats.
Assuntos
Feminino , Humanos , Eletrocardiografia , Teste de Esforço , CoraçãoRESUMO
The LVdP/dtmax, LVSP, AP and Vmax of the rat hearts in vivo were increased by Sophoridine ( 2 mg/kg, given to rats iv ) by 19.5, 13.1, 14.8 and 28.2% respectively. Such a positive inotropic effect lasted for more than 5 min and was statistically significant. Adrenaline (0.16 ?g/kg, iv ) could also increase the LVdP/dtmax and Vmax of the heart obviously and this action was not stronger than Sri after uses of drugs except at 0.5 min and vanished more quickly. There was an increment of MVO2I because of the increased arterial pressure within 3 min after use of Sri, which was much less than adrenaline. The present results show Sri strengthened the cardial force for longer time and affected the arterial pressure and MVO2I less than adrenaline in the rat hearts in vivo.