Quick Answer. In an officially-sanctioned MLB baseball game, there are 9 innings. If the home team is ahead in the top of the ninth and earns 3 outs, the game ends at 8 1/2 innings. If the game is tied after the away team earns 3 outs in the bottom of the ninth, the game goes into extra innings. Keep Learning.
Gas Exchange During Exercise. During exercise, your body needs more energy, which means your tissues consume more oxygen than they do at rest. Consuming more oxygen means you will also produce more carbon dioxide because your metabolic rate is elevated. The ratio of carbon dioxide produced per oxygen consumed also increases during exercise because a shift from fat to carbohydrate utilization takes place. At the most challenging work rates, you burn carbohydrates exclusively and produce 1.0 liter of carbon dioxide for every liter of oxygen you consume.
The heart rate during exercise is an indicator of intensity, or in other words how hard you are working. As you get fitter, your heart rate should decrease for any given exercise workload. This is the basis of many of the submaximal aerobic fitness tests.During exercise, your heart rate will depend on the intensity of exercise, your fitness level, and your maximum heart rate (which may also depend on your age).Some training programs set the intensity of exercise using heart rate guides.he heart rate during exercise is an indicator of intensity, or in other words how hard you are working. As you get fitter, your heart rate should decrease for any given exercise workload. This is the basis of many of the submaximal aerobic fitness tests.