Individualized Aerobic and High Intensity Training for Asthmatic Children (16)
The results concerning the cardiovascular adaptations after high intensity training (Fig 3) show that the maximal heart rate increased in the training group, but the maximal 02 pulse decreased slightly. These data suggest the following: (1) a decrease of stroke volume mediated by decreasing myocardial contract-ibility; (2) a decrease of arteriovenous 02 difference, with the data concerning the reduction of muscle oxidative capacity and the decrease of VTh supporting this hypothesis; or (3) a combination of the above. In the absence of direct measurement of each of these possibilities, any explanation remains speculative. buy cheap antibiotics
In conclusion, our study shows that when intensity training is individualized, it is possible to markedly increase the cardiorespiratory fitness of asthmatic children by aerobic training. Subsequent high intensity training does not further contribute to increased fitness. It appears that the intensity of training is of great importance in regard to the development of cardiorespiratory fitness because it seems to involve important consequences upon the asthmatic-exercise “interface,” since the asthmatics’ major problem is to avoid any excessive hyperventilation during exercise. Furthermore, this study suggests that the control of VTh could be a good index for evaluating the correct compatibility of the subjects capacities and the training intensity. Finally, further studies involving other intensities should be carried out in order to determine the optimal training intensity for asthmatic subjects.