Energy System Development
Thursday, January 28th, 2010This is the 6th instalment of a 7 part series on 21st Century Exercise Programming which focuses on Energy System Development, which can be defined as the ability to do higher levels of work - and sustain that output over time — not just the ability to work at a level where you can “hold a conversation” which is what we normally think of with long slow duration cardiovascular training. What this means is that great cardiovascular and fat loss benefits can be gained from doing interval training instead of or in addition to traditional methods of cardiovascular training.
The reality is that fantastic gains can be made within a 4-30 minute timeframes. The Tabata protocol showed that 4 minutes of maximal anaerobic work produced a 40% better improvement in aerobic capacity when compared with 60 minutes of aerobic work at 70% of VO2 Max. The Tabata method also improved anaerobic capacity by 28% whereas the aerobic work did not improve anaerobic capacity at all. By now some of you are thinking that 4 minutes of work for these sorts of results sounds too good to be true. I must warn you that there is a catch. The 4 minutes of work on the Tabata protocol is 4 minutes of hell! It involves a 20 second maximal effort followed by 10 second break repeated 8 times. Please visit YouTube and type in Tabata protocol to get an idea and some video evidence of the intensity you must work at to get the results mentioned above. The reality is that in the research study some of the athletes could not get through the entire 4 minutes of exercise on some days of the study due to the intensity of the protocol.
A compromise situation is to work your clients at a slightly lower intensity but go for a little longer e.g. 5-10 minutes depending on their fitness level. I am sure you would agree that this is still only a minimal time commitment for the potential of a great result. This type of interval training has real world implications in that clients are often time compressed so in order for trainers to ensure clients are getting a good return of the limited time that they often invest in their fitness program you would be well served by considering 4-10 minutes of energy system development work with your fitness and fat loss clients. The types of activities you can do interval work with are only limited by your imagination. Examples include: Running, Cycling, Rowing, Stepping, Kettlebell Swings, Bodyweight Circuits, etc.



