Anaerobic exercise is when you are exercising at a rate that requires your body to use energy systems that do not require the use of oxygen to produce energy from within the muscle. That's not to say that you are going so fast that oxygen is not being used. Some people error in suggesting that we get to a point where our body doesn't use oxygen. That isn't the case. What it means is that the primary source of energy being used at that particular moment is not dependent upon oxygen to produce energy (ATP) to keep you going.
The problem with anaerobic pathways is that they cannot be maintained for a long period of time. When the energy demand exceeds the rate at which it can be produced, you hit the wall and slow down. Slowing down allows for the oxygen dependent system (oxidative or aerobic) to produce more energy and hopefully catch up.
Another myth about anaerobic exercise is that lactic acid creates muscle failure and burning. The fact is that lactate (not lactic acid) can be useful in serving as a bridge between the aerobic pathway and anaerobic pathways.
The point at which the muscle is no longer able to clear out lactate fast enough to be used in aerobic pathways is known as the lactate threshold or anaerobic threshold. This measurement can be used to determine an athletes fitness level just as the maximum amount of oxygen that can be used by the muscle (VO2max).
Currently, there is a considerable amount of research to determine what relationship exists between VO2max and lactate threshold. Both characteristics are important for high level athletes.
Anaerobic threshold can be improved through high intensity interval training. Other sports or activities that require high levels of anaerobic threshold include basketball, soccer, hockey, lacrosse and racquetball just to name a few.
These types of workouts and activities are effective for improving lactate threshold because they tax the body's ability to clear lactate out of the muscles and become more efficient. High Intensity Interval training (HIIT) routines help achieve this. HIIT allows you to exceed your anaerobic threshold for a period of time by alternating high intensity activities with periods of rest and recovery.
If you would like to implement an interval training program to get you in shape fast, visit the Interval Training Guide website to get you started.
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