Author: Cardiovascular Training.
A single half hour session of cardio, can burn hundreds of extra calories during the performance of your session. And also after the session there are also more fat burning effects for up to several hours. The body’s cellular furnace expands in size and number and the aerobic enzymes increase in quantity which also accelerates the fat burning process. Over a period these factors allow your body to rely more on utilising fat rather than glycogen (carbohydrates) for fuel helping you obtain and sustain long term weight management. Cardio training also improves muscular endurance. When you lift weights, your body converts glucose into the high-energy compound ATP to fuel exercise performance. During this conversion process, lactic acid is produced and rapidly accumulates in your muscles as you train. When lactic acid builds up past a certain point, you experience an intense burning sensation in the muscles. The burn becomes so strong that it impedes your ability to achieve a muscular contraction; at that point you simply cannot continue to train. However, by increasing aerobic capacity, your cardiovascular system becomes more efficient at delivering oxygen to the working muscles. This helps to increase your lactic acid threshold, and thereby delays the onset of lactic acid build up. The net result is a greater capacity to train at a high level of intensity. Cardio training will also enhance muscular recuperation. Aerobic exercise helps to expand your network of capillaries-the tiny blood vessels that allow nutrients such as protein and carbohydrates to be absorbed into body tissues. The more capillaries that you have, the more efficient the body becomes in using these nutrients for muscular repair. Capillaries also help to clear waste products, particularly carbon dioxide, from the food burning process, further enhancing the nutrient delivery system. This accelerates the rate at which the muscles are able to get the nutrients needed for recuperation, helping to improve your workouts and to speed recovery.
There are two basic factors that influence the fat-burning effects of cardio: duration and intensity (how long and how hard you train). For any given level of calories burned, these factors have an inverse relationship: if you train harder, then you don’t have to train as long; if you train longer, then you don’t have to train as hard. However, it has been shown that a specific type of cardio known as interval training provides significant benefits over steady state exercise. For one, interval training is extremely time efficient, allowing you to complete a training workout in half the time of a normal cardio workout, and is more effective at burning fat.
Your cardio workout will therefore be of an interval training routine, during the high-intensity interval you will train for one minute at a level that exceeds your lactate threshold. This will be followed by a lower-intensity interval of between 1 and 4 minutes, where your body has a chance to clear lactic acid from the blood and replenish oxygen stores. This cycle will be repeated multiple times over the course of your cardio workout, and allow you to burn in excess of 300 calories in just 30 mins.
You will monitor the intensity of intervals using a rate of perceived exertion (RPE). This is a measure of how hard you feel when you are training, taking into account the physical sensations you experience during your workout, including increases in hear rate, breathing rate, and sweating. The RPE is rated using an incremental scale ranging from one to ten, with one representing a lack of exertion and ten being the maximum possible exertion. For example, a three would indicate a level of exertion that is fairly easy, and a level eight would be a level that was very demanding. You may have trouble getting through an entire workout at the suggested RPE levels; if this is the case then don’t worry simply decrease your levels to a level more consistent with your level of ability. As time goes on then your level of fitness will increase enabling you to complete the workout at a higher level.
With cardio training it is best to add variety to your training this is called cross training and can be accomplished by performing as few as two different activities (although the more, the better) and alternating them each workout. That way different workout will use different muscle groups and will reduce the risk of the musculoskeletal system from overuse. You therefore should consider using the treadmill, stair climber, and stationary bike. But any activity can be chosen for interval training, such as outdoor running, skipping, rowing, and elliptical training.
