Metabolic energy changes during exercise in equines

Metabolic and body temperature changes during exercise in hyperthyroid patients.

1. Body temperature, blood glucose, lactate, plasma free fatty acid and noradrenaline responses to exercise were studied in hyperthyroid patients during 30 min exercise on a bicycle ergometer at a work load producing a heart rate of approximately 135-140 beats/min. The results were compared with those obtained in healthy subjects exercising at work loads comparable in terms of oxygen uptake. 2....

Interaction among Skeletal Muscle Metabolic Energy Systems during Intense Exercise

High-intensity exercise can result in up to a 1,000-fold increase in the rate of ATP demand compared to that at rest (Newsholme et al., 1983). To sustain muscle contraction, ATP needs to be regenerated at a rate complementary to ATP demand. Three energy systems function to replenish ATP in muscle: (1) Phosphagen, (2) Glycolytic, and (3) Mitochondrial Respiration. The three systems differ in the...

Radioelectrocardiographic Changes during Strenuous Exercise

T HE TYPE AND AMOUNT of exercise recommended for the electrocardiographic diagnosis of coronary artery disease have been a matter of discussion and some controversy.' The electrocardiogram has also been studied after extreme effort, such as long-distance running,2 skiing,3 rowing,4 strenuous marching,5 and other forms of sports.6 7 Master and Oppenheimer in 19298 described a standardized two-st...

Haemodynamic changes during continuous exercise.

Metabolic and ventilatory changes in asthmatic patients during and after exercise.

Five asthmatic patients aged 25-30 years were studied during and after 6-8 minutes of steady exercise on both a bicycle ergometer and a treadmill. For each patient the duration of work, oxygen consumption, minute ventilation, and heart rate were similar in each form of exercise. During exercise all patients had an increase in peak expiratory flow rate. The blood lactate level was higher during ...