| Abstrakt: |
Thirty-six young male college students were randomly assigned to the cells of a 3 x 2 factorial design which included three levels of training intensity (training heart rates of 130, 150 and 170 beats per minute) and two levels of duration (7500 or 15,000 kpm total work). The six week training program was conducted on bicycle ergometers, three days per week. Prepost training differences on three cardiorespiratory tests (step test prediction of aerobic capacity, progressive treadmill test, bicycle test) did not reveal significant intensity, duration or interaction effects. Fitness changes yielded a highly significant negative correlation when related to the previous level of fitness, as tested on the training device. A comparison group of eighteen adult men were trained in a slightly modified design. Highly significant interaction effects were noted in one test condition. The cardiorespiratory endurance tests used were related, but they seemed to measure different aspects of the changes due to training. |
