Showing papers on "Interval training published in 1977"

Metabolic responses to interval training programs of high and low power output.

Abstract: The metabolic responses of 30 college-aged males were compared following high power (30-sec runs with 19 repetitions-Group HP) and low power (120-sec runs with 7 repetitions-Group LP) interval training programs (8-wk, 3 days/wk). Measurements included: maximal aerobic power (Vo2max, open circuit spirometry); maximal lactacid capacity (net-LAmax, blood LA accumulation following exhaustive exercise); net energy production (net Vo2 and netLA) following a 2-min run that was exhaustive before but not following training; and maximal muscular power (stair-climbing procedure). The results indicated: 1) significant but equal increases in Vo2 max in both groups; 2) no change in either group in netLAmax; 3) net Vo2 during the 2-min run was unchanged, however, netLA was significantly greater in Group LP; 4) no changes in either group in muscular power. It was concluded that low power and high power output interval training programs elicit similar changes in maximal aerobic and anaerobic metabolism, and that the physiological and or biochemical changes responsible for lowered lactic acid production during heavy, but submaximal exercise following training are produced to a greater extent by the low power program.

Physiological responses of fire fighting recruits to high intensity training.

Abstract: Data were obtained for 20 fire department recruits before and after a ten-week training program. Training consisted of interval running and circuit weight training. At the conclusion of the training program several parameters were examined. Total work capacity assessed on a bicycle ergometer significantly increased (27.3%) with a concomittent increase in maximum oxygen uptake (33.2%). Physical performance tests given showed marked increases in 12 foot rope climb, 600 yard run, push-ups, sit-ups and leg-lifts. Physical strength also showed significant increases for the bench press (18.5%), military press (19.4%) pulldown (11.7%) biceps curl (16.2%) and leg press (18.7%). Training of this nature also brought about significant changes in body composition of the recruits. The subscapula and abdomen skinfold sites showed significant decreases of -9.6% and -11.9% respectfully. Body segment circumferences showed significant changes for shoulder, thigh, flexed biceps and abdomen. The skinfold and circumference measures reflected changes in lean body weight (2.6%), absolute body fat (-13.4%), and relative body fat (-13.7%). It has been shown that interval training and circuit weight training significantly increase the physical performance capacities of the recruits. It has been suggested, due to the tremendous cost to the county and city agencies as well as to the aspiring recruit, that a preliminary physical training program be implemented to reduce the drop-out rate of recruits during the tower training drills. Language: en

Influence of short term physical training on exercise tolerance after myocardial infarction

Abstract: Fourteen patients with stabilized myocardial infarction were submitted to a functional evaluation before and after 3 sessions of interval training on the bicycle ergometer. With submaximal exercise, myocardial load decreases after short term training, the heart rate and the blood pressure heart rate product being significantly lower for the same oxygen consumption. Maximal working capacity, expressed in watts or oxygen consumption, increases significantly after short term training, the benefit being one third of that obtained after 6 wk training. These early changes in functional capacity are positively correlated with those obtained by a more prolonged rehabilitation program. Leg muscular blood flow during submaximal and maximal exercise tends to increase after short term training, although this change is not systematic and thus not significant.

Conditioning Exercise Programs for Normal Older Persons

Abstract: Men and women of all ages should be able to attain and maintain a vitality for living by proper health care, regular medical checkups, concern about adequate and proper nutrition, sufficient rest and relaxation, and a regular regimen of challenging physical activity