Showing papers on "Interval training published in 1975"

Frequency and duration of interval training programs and changes in aerobic power

Abstract: This study was designed to ascertain whether 7- and 13-wk interval training programs with training frequencies of 2 days/wk would produce improvement in maximal aerobic power (VO2max) comparable to that obtained from 7- and 13-wk programs of the same intensity consisting of 4 training days/wk. Sixty-nine young healthy college males were used as subjects. After training, there was a significant increase in VO2max (bicycle ergometer, open-circuit spirometry) that was independent of both training frequency and duration. However, there was a trend for greater gains after 13 wk. Maximal heart rate (direct lead ECG) was significantly decreased following training, being independent of both training frequency and duration. Submaximal VO2 did not change with training but submaximal heart rate decreased significantly with greater decreases the more frequent and longer the training. Within the limitations of this study, these results indicate that: 1) maximal stroke volume and/or maximal avO2 difference, principle determinants of VO2max, are not dependent on training frequency nor training duration, and 2) one benefit of more frequent and longer duration interval training is less circulatory stress as evidenced by decreased heart rate, during submaximal exercise.

Differences in Metabolic Alterations With Sprint Versus Endurance Interval Training Programs

Abstract: The study of the effects of physical training on metabolism has been limited mainly in two ways. First, the training programs used have consisted primarily of continuous, rather than interval or intermittent, exercise [5, 9, 21, 31–33]. Second, the metabolic effects of these programs have been confined primarily to the aerobic system. Consequently, little research is available concerning sprint-type training programs and changes in anaerobic as well as aerobic metabolism. Furthermore, there is even a greater scarcity of information relating to a comparison of sprint and endurance interval training programs on aerobic, alactic, and lactic metabolic responses. This, therefore, was the purpose of this study.

The Changes of Acid Base Balance during Interval Swimming Training in Trained and Untrained Men

Abstract: The biochemical examination of changes of acid base balance with the help of Astrup’s method belongs, today, to currently used methods of examination enabling to follow the level of metabolism. At race performances or training this method presents more detailed information on the biochemical changes appearing under the influence of physical strain.

Metabolic alterations with sprint versus endurance interval training in females

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