Individualized Aerobic and High Intensity Training for Asthmatic Children (13)
A particularly interesting finding in this study is the increase in VTh (about 20 percent) because the ventilatory requirement, for the range intensities between the pretraining and posttraining VTh, is lower. It is now well established that the level of hyperventilation is a major determinant of exercise-induced broncho-spasm. Thus, we can argue that, beyond cardiorespiratory fitness improvement, aerobic training increases the ability to perform submaximal exercise. In addition, the improvement of exercise-induced bronchodilation after aerobic training, described by Haas et al, linked to the increase of VTh can explain why the physical fitness improvement is associated with a reduction of exercise-induced broncho-spasm. buy yasmin online
Effects of High Intensity Training
High intensity exercises performed in an indoor swimming pool were well tolerated at least after an aerobic training program. High intensity training induced no effect on Vo2max and decreased moderately the VTh in the swimming group (Fig 1), so that after this training, there was no longer any difference of VTh between the beginning and the end of the whole training period. For an ethical reason, we did not use a crossover experimental design with one group beginning with aerobic exercises and the other with high intensity exercises. Indeed, these exercises pose the risk of exercise-induced asthma (hyperventilation and blood lactate concentrations, and it is hazardous to begin a training program with them.