Showing papers on "Interval training published in 1985"
TL;DR: Both continuous and interval training were equally effective in augmenting LT, but interval training was more effective in elevating VT.
Abstract: The purpose of this study was to evaluate the effects of continuous and interval training on changes in lactate and ventilatory thresholds during incremental exercise. Seventeen males were assigned...
241 citations
01 Mar 1985
TL;DR: It was concluded that continuous and interval training programs wee equally effective in improving VO2 max and submaximal ventilatory efficiency, regardless of initial fitness level, provided the total amount of work completed was equalized.
Abstract: This study examined the effects of three training intensities on the maximum oxygen uptake (VO2 max) and ventilatory equivalents for oxygen (VE/VO2 ratio) and carbon dioxide (VE/VCO2 ratio) at submaximal and maximal workloads. Forty males, classified as high or low fit according to their relative VO2 max, were assigned to one of four subgroups: a control group that did not train; a continuous training group that trained at an oxygen uptake that was 10% above that at which the VE/VO2 ratio reached a minimum; another continuous training group that trained at an oxygen uptake that was mid-way between that at which the VE/VO2 ratio reached its minimum and maximum; and an interval training group which trained at 100% VO2 max. The work:rest intervals were one minute each. Initial fitness level and total training power output for the eight week program was equalized in each group in the two fitness categories. The results indicated that both fitness categories responded similarly to the three training intensities. The training groups showed significant but equivalent increases in the VO2 max, but no significant changes in the max VE/VO2 or max VE/VCO2 ratios. The submaximal VE/VO2 and VE/VCO2 ratios were significantly lowered, primarily as a result of a significantly lowered, primarily as a result of a significant decrease in the ventilation volume. It was concluded that continuous and interval training programs wee equally effective in improving VO2 max and submaximal ventilatory efficiency, regardless of initial fitness level, provided the total amount of work completed was equalized. Such training programs, however, were unable to modify the maximal ventilatory efficiency in either fitness category.
25 citations
Patent•
06 Sep 1985
TL;DR: A timer for use during an interval training workout or other practice to measure and display in countdown form the amount of time remaining in each of a series of sets of exercise periods, each exercise period followed by a rest period, and each exercise periods and each rest period having a respective length as mentioned in this paper.
Abstract: A timer for use during an interval training workout or other practice to measure and to display in countdown form the amount of time remaining in each of a series of sets of exercise periods, each exercise period followed by a rest period, and each exercise period and each rest period having a respective predetermined length. Provision is made for entering the length of the exercise period and the rest period for each set and for timing similar sets of exercise and rest periods a predetermined number of times. A countdown display shows the number of sets of exercise and rest periods remaining to be timed during a programmed workout, and an audible indication is provided at the end of each exercise period and at the end of each rest period. Provision is made to repeat a workout a single time or to repeat continuously the sequence of exercise and rest periods of a workout or practice session.
23 citations
TL;DR: It seems that trained muscles may be able to work with a higher degree of economy than untrained muscles.
Abstract: The effect of intensive interval training on the maximal anaerobic power of the rat quadriceps muscle was investigated. The anaerobic energy production was estimated from the changes in the concentrations of phosphocreatine, adenine nucleotides, inosine monophosphate and lactate in freeze‐clamped muscle tissue after electrical stimulation for 2–30 s. The results showed that the maximal running speed of rats tested increased by 24%, the maximal force exerted increased by 13%, and the succinate dehydrogenase activity by 48 %, while the adenylate kinase activity was the same before and after training. No difference could be observed between the maximal anaerobic power of the quadriceps muscles of trained and sedentary animals. It seems that trained muscles may be able to work with a higher degree of economy than untrained muscles.
18 citations
TL;DR: The physiological demands and responses of the respiratory, cardiovascular, and muscular systems to marathon running are described, focusing on the chain of oxygen transport needed to fulfill the aerobic requirements of marathon running.
Abstract: In brief: The marathon is one of the greatest tests of human endurance. This review article describes the physiological demands and responses of the respiratory, cardiovascular, and muscular systems to marathon running, focusing on the chain of oxygen transport needed to fulfill the aerobic requirements of marathon running. During the race, runners use about 75% of VO2 max. Increased levels of ventilation (> 80 liters· min(-1)) have been observed during the marathon. This can lead to decrements in forced vital capacity and respiratory muscle fatigue. Prolonged muscle activity during the run can cause muscle injury such as inflammation and necrosis of muscle fibers. Techniques for augmenting performance include endurance and interval training, diet manipulation, and racing strategy.
13 citations
Journal Article•
10 citations