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Periodization and Mixed Training

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This article comes to you from our friends at TrainingPeaks.com. Training Peaks provides the complete web, mobile and desktop solution for enabling smart and effective endurance training. Training Peaks solutions are used by Tour de France teams, Ironman World Champions, Olympians, and age group athletes and coaches around the world to track, analyze and plan their training. It is also what we use at Virtual Trainer to administer our premium training plans. They also have great articles. And while they are written specifically for endurance athletes they are easily adapted for the motocross athlete. This is one such article. - Virtual Trainer

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Author: Joe Friel

In the last couple of years, I’ve been thinking a lot about periodization of intensity. It started when I was reading research on the aerobic capacity declines common in 50+ year-old endurance athletes for a book I was writing - Fast After 50. But research also reveals that even highly trained endurance athletes over the rather youthful age of 35 lose both aerobic and anaerobic capacity at an average rate of about 8 percent per decade. Why does it decline so rapidly even in these younger athletes?

Challenge Your Anaerobic System

In digging into the research a little deeper, it appears that the decline is most rapid in those who seldom challenge their anaerobic systems. They do a lot of Long Slow Distance (LSD) training. I realize that’s not a very happy message to read as you’re in your Base period doing lots of LSD riding. Not doing anaerobic workouts at all for several weeks means you will lose anaerobic fitness and then have to devote a significant amount of time to rebuilding the related systems once you move beyond the Base period. [Lucky for us folks in motocross, riding is an anaeobic workout....assuming you are riding hard. But for those riders who do not get to ride much (especially during the off-season), anaerobic training during the Base phase is typically low. - VT]

It appears that up until about age 35 fitness above the anaerobic threshold is maintained with little need for focused training. But that changes with age. At first these declines occurring after about age 35 are rather small, but the older you get the greater they become.

Training the Peripheral Muscles

The research also suggests that adaptations in the “peripheral” muscles that propel the athlete in his or her sport (for example, the legs in running) ultimately have a greater impact on race performance than do “central” adaptations (for example, the heart, blood, and lungs). Yet endurance athletes have traditionally focused their training in the Base period almost exclusively on central adaptations.

There’s nothing wrong with doing a great deal of that as there are, indeed, fitness benefits that still occur peripherally with such training (for example, greater capillarization of the primary muscles of the sport). I’m notoriously well known for having athletes do lots of aerobic threshold work in the Base period [This applies to those of you who follow a Premium training plan on RacerXVT.com. - VT] The problem is that completely avoiding anaerobic training during this long period of training promotes a loss of much of one’s peripheral muscular power.

Mixing Up Your Training

I propose that the way to prevent these seasonal declines is to do what might be called “mixed” training throughout the year regardless of the period. If you’ve been following a rather traditional, linear periodization plan it’s really not a big change. You only need to add a few minutes of such high intensity intervals per week in your base period to maintain your anaerobic and aerobic capacities. [If you follow a RacerXVT.com training plan, this type of anaerobic effort is taken care of in the form of motocross workouts and/or motocross replacement workouts. - VT]

Let’s take a look at what that may entail when it comes to Base training starting by dividing training intensity into three rather broad zones (note that this is not the common intensity breakdown which usually involves 5 to 7 zones).


Intensity Defined Purpose
Zone 1 less than or equal to Aerobic Threshold (AeT) Aerobic endurance
Zone 2 Between AeT and AnT Common endurance race intensity
Zone 3 greater than or equal to Anaerobic threshold (AnT) Aerobic Capacity, Anaerobic Capacity

Using these three zones, how might an athlete allocate his or her workout intensity over the course of a season using a mixed training concept? The following table provides an example of a mixed, time-by-zone distribution in traditional, linear periodization for a hypothetical athlete.

Period

Zone 1

(less than or equal to AeT)

Zone 2

(AeT - AnT)

Zone 3

(greater than or equal to AnT)

General Prep (Base)
85%
12%
3%
Specific Prep (Build)
75%
15%
10%
Taper (Peak)
80%
8% 12%

Please understand that this is just an example for an advanced, fictional athlete who we otherwise know nothing about—gender, age, sport, race type, limiters, or anything else. In other words, it’s not intended for you to incorporate exactly into your training. It’s only an example for a proposed concept. The concept is the main point—not the numbers.

The point here is that the athlete in the example is doing workouts that have a broad range of intensities from below the aerobic threshold to well above the anaerobic threshold. And the athlete is doing these year round. But note that distribution of intensity changes with the periods. The Base period is still heavily devoted to training at and below the aerobic threshold (using heart rate, that’s roughly 30 bpm or so below your anaerobic threshold).

An Example

Let’s look more specifically at zone 3 in the second table. In the General Prep (Base) period our imaginary athlete is averaging only about 3 percent of his or her training at or above the anaerobic threshold. Such a workout in this period calls for very brief but very high-intensity intervals. To add some level of detail, let’s say the athlete trains 10 hours in a week. So what this means is that the standard zone 3 workout in Base may be something such as 3 sets of 4 to 6 x 20 to 30 seconds ranging in intensity from 100 percent to 150 percent of Functional Threshold Power (FTP) with 20 to 30 second recoveries between intervals and 2 minutes between sets. This may be done once weekly with another weekly session of 3 x 4 minute work intervals with 1 minute recoveries done at FTP. These aren’t terribly hard workouts but they are laying the foundation for some harder anaerobic training to come- and are helping to maintain peripheral muscular power. [If you are trainining via a RacerXVT.com premium training plan, this is all taken care of for you! - VT]

In the Specific Prep (Build) period the athlete is doing 10 percent of weekly training in zone 3. This is when anaerobic training typically starts in a traditional, linear periodization plan. Only now the athlete doesn’t have to slowly start from scratch to allow for a lengthy adaptation to high intensity after several weeks away from it. This allows the intervals to become more challenging almost immediately.

The zone 3 session now has longer work intervals and more total time at and above the anaerobic threshold. So such weekly workouts may call for a mix of 30 second work intervals at 150 percent of FTP, 3 minute intervals at 120 percent of FTP, and 12 minute intervals at FTP. These are fairly typical for a Build period in some sports. The big difference is that the athlete was able to achieve more in this period than had he or she avoided all anaerobic training in the Base period due to starting it at a higher level of anaerobic fitness.

Should you train with a mixed intensity distribution year round? I can’t say for certain, but my inclination is that there is something to at least consider here. The problem is, of course, that just as with all periodization concepts the answer to the question, “Did it work?” won’t be known until serious racing begins several months later. [As far as amateur motocross athletes are concerned, the answer is most certainly YES in my opinion - VT]

Bibliography

  • Gent, D.N. and K. Norton. “Aging Has Greater Impact on Anaerobic Capacity Versus Aerobic Power in Trained Masters Athletes.” Journal of Sports Science 31 (1) (2013): 97-103.
  • Faria E.W., D.L. Parker, and I.E. Faria. “The Science of Cycling: Physiology and Training - Part 1.” Sports Medicine 35 (4) (2005): 285-312.
  • Seiler, S. and E. Tonnessen. “Intervals, Thresholds, and Long Slow Distance: The Role of Intensity and Duration in Endurance Training.” Sportscience 13 (2009): 32-53.
  • Tabata, I., K. Nishimura, M. Kouzaki, Y. Hirai, F. Ogita, M. Miyachi, and K. Yamamoto. “Effects of Moderate-Intensity Endurance and High-Intensity Intermittent Training on Anaerobic Capacity and VO2max.” Medicine and Science in Sports and Exercise 28 (10) (1996): 1327-30.
  • Tanaka, H. and D.R. Seals. “Endurance Exercise Performance in Masters Athletes: Age-Associated Changes and Underlying Physiological Mechanisms.” Journal of Physiology 586 (1) (2008): 55-63.

About the Author: Joe Friel is the author of The Triathlete’s Training Bible, Your Best Triathlon and other books on training. For more information visit his website at www.joefrielsblog.com. You can also view and purchase Joe's training plans on TrainingPeaks.

Remove the Guesswork

At Virtual Trainer, we believe there is a right way to train for motocross. It starts with having a clear goal, finding expert instruction (on and off the bike), performing structured training and receiving immediate feedback throughout the process. Coach Seiji (Andrew Short's longtime trainer) has teamed up with Virtual Trainer to offer our audience an exclusive motocross community geared towards improving your performance on and off the track. The community offers motocross specific training plans designed by one of the best – to help you achieve your best performance. This is literally a one-of-a-kind training and conditioning experience for you, the motocross athlete.

That's it for now, until next time, good luck with your training and remember, if you have a question, log on to the Virtual Trainer Expert Forum and have your question answered by a panel of experts. In addition, be sure and check out the Racer X Virtual Trainer archive section. Your complete one-stop information zone for motocross fitness. VT Signature

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