The effect of training at various heart rate intensities on cardiorespiratory fitness

Purpose [line break] The purpose of this investigation was to determine and compare the effect of training at various heart rate intensities of exercise on the cardiorespiratory fitness of a selected group of college men. It was also the purpose of this study to determine the threshold level and optimum level for elevating the heart rate in producing a change in cardiorespiratory fitness, while training for a distance of one mile, four days a week, for six weeks. ..