Archive for November, 2007

Tri Talk Triathlon Podcast, Episode 53 Transcript and Blog

Saturday, November 17th, 2007

The audio for this podcast can be found here.

To eat or not to eat? The impact of food intake in proximity to the start of exercise. A conversation with the medical coordinator of the 70.3 Ironman World Championships, and sports psychology take 2. All that, today on Tri Talk.

Welcome to Tri Talk your podcast source for triathlon tips, training, news and more. New listeners since episode 52 come from New Zealand and Colorado. In New Zealand, I hope you enjoy the Stroke and Stride sprint-distance series that has just kicked off, and in Colorado, where the climate is not as nice as New Zealand this time of the year, I hope you are taking my advise on recovery from the last episode and not doing anything. My goal at Tri Talk is to help you swim, bike, and run faster, to meet your personal triathlon goals. Whether you are an elite or amateur triathlete, we cover sprint distance to Ironman distance. I’m your host, David Warden, and this is Tri Talk episode 53.

That was Seismic Anomaly with Afterburner. This fine piece of music and all the great music on Tri Talk can be found at http://www.podsafeaudio.com/. This episode was scheduled to be the third and final part of our series on periodization. That series will actually conclude in episode 54 because I will be wrapping up that subject with a conversation with the father of modern periodization, Dr. Tudor Bompa, who has agreed to an interview next week. We are so lucky to able to have the opportunity to hear from this giant in endurance sports, the man who really condensed all the knowledge and brought periodization to athletes all over the world.

This episode is sponsored by PowerTri.com. Are you looking for a little extra pizazz in your swim workouts this season? Pump up the volume and Make Your Swim Rock! with Finis’ all new SwiMP3 version 2. This little underwater MP3 player provides an incredible audio experience, now with 256MB of storage so you no longer have to decide between Metallica and Celine Dion, load them both up and take them to the pool with you! The Finis SwiMP3 retails for $199 but is on sale now at PowerTri.com for $179. Plus for a limited time for Tri Talk listeners, use discount code SWIMP3, and get an additional $30 off and the first 20 customers will also get a FREE pair of Finis Swim Goggles! That’s just $149 for the SwiMP3 player plus a free pair of goggles. Plus, you’ll qualify for Free Ground Shipping. This makes the perfect Christmas gift for your favorite triathlete in your life (or for yourself). Hurry! This offer expires Dec 25. Visit PowerTri.com today!

Let’s get onto the good stuff! Have you ever found yourself nearing the middle of a workout, and suddenly you just feel flat? Your energy drops, you feel fatigued, and start to count the minutes until the workout is over? Maybe the same workout the previous week, you felt great, full of energy and able to meet the intensities you had planned for the workout. And we’re not talking about a 2-hour workout where it is normal to start to feel fatigue at the end, but a workout where you began to feel crappy just 15-20 minutes in.

While there are many factors that could have created that fatigued state so early in a workout, including sleep and recovery, there is another potential overlooked cause. How soon before your workout you last ate. I’m guessing that many of you are thinking that particular type of fatigue would be caused by eating too far in advance of a workout, and that eating close to the workout would ensure you had enough energy. The following results might surprise you.

Dave Costill, one of the leading sports physiologists, published a study in the Journal of Applied Physiology that looked at the effects of a feeding 45 minutes prior to exercise. This study took 6 trained males, with a VO2max ranging from 53-65, indicating a good level of fitness for all the test subjects. On two separate occasions, the men performed a 90-minute running trial.

On the first run trial, the men took in 75 grams of glucose, or about 300 calories, 45 minutes prior to exercise. What happened in that 45 minutes is what you might have expected to happen. Blood glucose spiked by 38% in that 48 minutes. When I first read this I thought “Sweet! Does this mean if I plan my meals and workout right, I can go into a workout with my blood sugar at its peak? But, just 15 minutes into the workout, the athletes blood glucose dropped by 300% to just a fraction of what it was even before the athletes took in the glucose 45-minutes before exercise. Over the next 60 minutes, the athletes’ blood glucose did begin to climb again, but it never even reached the level it was at prior to the workout. In fact, several of the test subjects couldn’t even finish the 90-minute time trial because they felt exhausted at 75 minutes.

Now, the same group of athletes did the same test over a week later. This time their last meal was several hours prior to the run test. Their blood glucose levels were the same 45 minutes before the trial, and those levels stayed the same until they began to exercise. To compare from the previous week, the blood glucose levels of the athletes in the second week were 40% lower than they were the previous week at the moment they began to exercise. They did not experience the spike in blood glucose that had had the week before. As they began to exercise at the same intensity as the previous week, the subjects blood glucose began to rise steadily through the first 75 minutes by 26%, while the week before with the pre-exercise meal the athletes had had their blood glucose cut in half at 75 minutes.

Your probably thinking that this doesn’t make sense. The athletes who ate 45-minutes before had a decrease in blood glucose after 15 minutes of exercise, and the athletes who did not eat had an increase through the first 75 minutes. How can that be?

The answer is insulin. Just like a diabetic who has to understand the impact of their diet and the timing of their diet, the same thing applies to an athlete. Carbohydrates digested in that 45-minute window, when the body is at rest, stimulates insulin secretion, which causes the muscles to use an enormous amount of glycogen when exercise starts, leading to a dramatic decrease in available blood glucose leading to hypoglycemia and early fatigue.

Now, does this mean that you should not take in glucose or carbs during exercise? Not at all. This same study showed that insulin levels did not increase when the glucose was taken in during exercise, and in fact it steadily increased the glucose in the blood when taken in during exercise.

You might also recall in an earlier episode of Tri Talk, we discussed the impact of taking in food 30 minutes before exercise to your heart rate. I won’t go into detail since we have already covered this, but as a review, taking in a large meal 30 minutes prior to exercise increases the HR by 10 beats. When running at the same speed, the HR is 10 beats higher then when running 3 hours after eating.

It seems on the surface that a worse-case scenario for an athletes would be to take in a large glucose meal 30 minutes prior to exercise. If you use HR to measure your intensity, you could be robbing yourself of 10 full beats of intensity, and then you might start to feel like you are going to crash 15 minutes into the workout.

Now, this does mean that these effects are universal. There are some athletes who genuinely seem to have a high tolerance both at a hormonal and digestive level, and who eat whatever they want, whenever they want, and it seems to have no effect. But if you have the choice, it seems the best thing to do is not try and eliminate eating about an hour before exercise.

This is easier said then done. The reality is that we are triatheltes as well as husbands or wives, parents, and we have to make a living. It is not always possible to plan our meals and eating so perfectly around training. So let offer a couple of alternatives to meticulous meal planning and timing.

First, if you can, eat something during your exercise, even right at the beginning. This also depends on your tolerance for certain foods, but if you are accustomed to grabbing a bagel when you first wake up, and then getting ready for your run, consider eating the bagel over your first half mile.

Second, although not explicit in the study we jut reviewed, it is implied that eating foods with a low glycemic index would not result in the same type of insulin spike that something like glucose would. There are lots of foods, even carbs, that have a much lower impact on blood glucose and insulin levels. These low glycemic index foods include apple sauce, barley, peaches and most nuts. A list of these foods can be found on page 244 of the Triathlete’s Training Bible. Proteins of course have very little effect on insulin. These are the types of foods that you can take in within that 45-minute window that might have less of an effect on your insulin, and therefore blood glucose depletion.

My title for the podcast “To eat or not to eat” is really a misleading title. Of course you have to eat. But it was catchy. The key is to understand the timing of when, and what you eat. So, if you have been feeling curiously fatigued in your workouts, consider this small change to your diet and training regimen.

By the way, as I read this study, at the very bottom it stated that the study was made possible by a grant from the National Dairy Council. I am not joking. This should not in any way erode the legitimacy of this study. In fact, not only did Dave Costill participate, but so did uber-physiologist Edward Coyle. Since milk is actually a low glycemic index food, maybe the National Dairy council wanted to get the word out on drinking more milk before exercise, I don’t know. But, the really odd thing about this is that this is the second time I have mentioned the National Dairy Council on Tri Talk. It’s like they have a conspiracy to infiltrate the world of endurance sports. Weird.

Moving on! I had the chance to cover the 70.3 Ironman Championships in Clearwater, Florida for Triathlete Magazine just last week. Since Triathlete got me there, I felt it was necessary to put all the best stuff from the event into their podcast, which you can hear at http://www.triathletemag.com/. But, while I was there, I snuck in one interview for Tri Talk with Dr. PZ Pierce, the medical coordinator for the championships, having provided the medical support for over 30 Ironman events.

What are the most common conditions that lead an athlete into the medical tent at an Ironman? How can they be avoided? Let’s find out with a quick conversation inside an Ironman medical tent.

(audio interview)

That was actually my second trip inside an Ironman medical tent, the first time being as a participant, but I’d rather not talk about that. So it turns out that hyponatremia may not be as common as I thought. Also, loss of fluids other than sweat should be considered in your hydration strategies. Techniques and testing that determine hydration based on sweat alone may put you short of your hydration needs at long distance racing.

By the way, is it just me, or does it say something about the state of triathlon when the medical coordinator says that a half Ironman distance is short? Sure doesn’t feel short to me last time I did one.

By the way, if you want to hear the play-by-play of one of the closest, most exciting Ironman finishes ever, and if you want to hear me scream like a girl, you have to check out Triathlete Magazine’s 70.3 Ironman championship podcast at http://www.triathletemag.com/ and click on Podcasts. The coverage also includes interviews with 2006 70.3 Champions Samantha McGlone and Craig Alexander, who also both came in second place at the 2007 Ironman championships in Hawaii last month, as well as conversations with 2007 Ironman champion Chrissie Wellington, 2007 Ironman Louiville winner Heather Gollnick and even more pros and coverage from the event. But the main reason you should listen to it, is that if you don’t, they won’t send me back to do it again.

Before we wrap things up, I’d like to hold you hostage for a moment and remind you of two ways you can become even more connected to the valuable training information on Tri Talk. If you have not registered for the Tri Talk forums, you are robbing yourself of the opportunity to get instant triathlon training gratification. Why wait 2 weeks between episodes to hear about a topic of my choice, when you could go to the forums and ask you own question whenever you want, and have it answered by me or one of our stellar scientifically-minded forums contributors. Go to www.tri-talk.com/forums and register today.

And while you are there, complete your Tri Talk collection by downloading all the archived Tri Talk episodes. You know how you see about, like, 16 episodes on the website or iTunes today? Yea, well there are more episodes. Lot’s more. Like 20 more. You can get them all individually, or I have just introduced the Tri Talk archived collection CD. That’s right, all of the archived episodes that you can’t get today available in mp3 format on your very own CD. What better way to say “I love you” this Christmas, than a Tri Talk CD in your special someone’s stocking.

Moving on! Back in episode 42 I took a stab at sports psychology. I think it went well, but in trying to take in on twice, I felt it was important to bring in an expert for this second attempt. Why should we be interested in sports psychology? What kind of edge will it give us as athletes? My version of sports psychology has always been to mock my athletes when they tell me they’re tired. It turns out it is much more complex than this. To answer these questions, I enlisted the help of a real sports psychologist.

(audio interview)

That’s all for this week. Don’t forget to join me next time was we cover part 3 of periodization, with an interview with Tudor Bompa. I anticipate that this will be a don’t-miss episode. See you next time!

Tri Talk Triathlon Podcast, Episode 52 Transcript and Blog

Friday, November 2nd, 2007

The audio for this podcast can be found here.

Everything you always wanted to know about training with power but were afraid to ask, and the second part in our periodization series. It’s microcycles, mesocycles, and macrocycles, today on Tri Talk.

Welcome to Tri Talk your podcast source for triathlon tips, training, news and more. A surge in new listeners since episode 51 from Las Vegas, NV and London, England. In Las Vegas, I hope you race well at the upcoming Silverman full and half Ironman distance event on November 11. That is certainly one of the toughest Ironman-distance courses in the world. In London, perhaps just a few outdoor events left this year, but maybe you’ll be finishing your season at the upcoming DB Max Chilly Duathlon. Best of luck. My goal at Tri Talk is to help you swim, bike, and run faster, to meet your personal triathlon goals. Whether you are an elite or amateur triathlete, we cover sprint distance to Ironman distance. I’m your host, David Warden, and this is Tri Talk episode 52.

Today on Tri Talk we continue the pattern of covering glaring topic omissions on Tri Talk. It took 50 episodes to interview Joe Friel, it took 51 episodes before I covered periodization, and now in episode 52 we finally tackle training with power. Sometimes when I come up with topics for the show, I truly forget to see the forest for the trees, and focus on the training details and not the fundamentals of training, which certainly includes training with periodzation and power. I’m fortunate to have Coach Peter Cummings, an expert on training with power, on the show today to help us understand this important training technique. In the second part of periodization coverage, we’ll also be covering transitioning and recovery as part of your strategy for your annual periodization training plan. Even if you think you already recovery, I hope to add some information that you can add to your decision around your training plans. Critical, critical stuff.

Now that we have introduction to episode 52, I have a very important correction to make. Back in episode 51, I incorrectly reported on Rutger Beke at the Ironman world championships. I did him a double disservice by first placing him in the German contingent of the pros at Ironman, and second, reporting that he dropped out. Beke is in fact one of the stellar triathletes from Belgium, and did not drop out of the race despite his poor condition going into the run, finishing with a solid 11-hour day. My astute Belgian listeners also pointed out to me that the relatively small country of Belgium had 2 athletes in the male top 10. My apologies to Rutger and to Belgium, this was simply sloppy and hasty reporting on my part.

You can send in your questions and comments to david@tri-talk.com. Or better yet, join the hundreds of listeners who have become a member of the Tri Talk forums and post your question there for me or other triathlon enthusiasts and experts to answer. It’s a piece of cake to join at www.tri-talk.com/forums . Also, by popular demand, I have created a Tri Talk index of topics. Instead of looking at each episode and reading the topics covered in that episode, visit www.tri-talk.com and see an index of all topics and articles covered and which Tri Talk episode you can find them in. Want to hear about transitions? The Tri Talk index says to check out episodes 18 and 48. Interested in how flexibility affects performance? The index says to listen to episode 36. It’s a whole new way to get the most out of Tri Talk. Visit the website and click on Resources.

This is not new news, but it would be somewhat remiss of me to not at least mention the highlights of the slowtwitch.com Kona bike count which came out a couple of weeks ago. Each year slowtwitch.com does a fantastic job of listing some of the cycling gear that the fastest Ironman age-groupers use at Kona. Slowtwitch.com also offers a count of wheels, saddles and aearobars.

In 2007, once again Cervelo is the top bike, increasing its lead even further from 2006. Bikes like Felt and Scott again increasing their totals from the previous year, with Specialized almost doubling in the past 2 years as well. In fact you can hear an interview with the manufactures of all of those bikes mentioned in my Interbike podcast coverage for Triathlete magazine at www.triathletemag.com, to find out what made them increase their profile at Kona in 2007.

This episode is sponsored by PowerTri.com. Don’t let your training go dormant this winter. When it’s cold outside take your cycling indoors with a Kurt Kinetic Fluid Trainer from PowerTri.com. The Kinetic Bike Trainer is the perfect workout partner for sprints to intervals to all-day cruising. Quiet. Smooth. And like every Kinetic Trainer, 100% leak-proof. All Kinetic Bike Trainers are up to $90 off at PowerTri.com and come with a Free Spinerval Workout DVD and Free Ground Shipping. Order yours today online at PowerTri.com.

Speaking of PowerTri.com, PowerTri.com is the exclusive internet retailer for unpublished Tri Talk episodes that you may have missed. As the fan base for Tri Talk continues to grow, it is inevitable that as you join the Tri Talk party, you might have missed the first few episodes. If you find that you just can’t get enough of my voice, first see a psychiatrist, and second, get all the unpublished Tri Talk episodes from PowerTri.com

Let’s get onto the good stuff! When I say periodization, what comes to your mind? Perhaps base periods, build periods, frequency and volume. Maybe after episode 51 the term “overcompensation” is now embedded in your periodization vocabulary. But how about recovery? When you sit down to plan your training plan year or week, do you spend as much time planning recovery as you plan your workouts? Actually, I bet many of you do. One of the signs of a veteran athlete is the athlete who does consciously factor in recovery into their training. So how important is recovery in your periodization plan? Last week I introduced you to the man considered the father of periodization, Dr. Tudor Bompa and his work which introduced periodization to the West, Theory and Methodology of Training. In that book, Dr. Bopma states this about recovery, “Recovery should be so well understood and actively enhanced that it becomes a determinant component in training”.

A determinant component in training. Not an after-thought, not a secondary consideration, but a primary component. You might also remember my interview with Joe Friel in episode 50, I asked him what training concept had not changed in all his years of endurance coaching. His responded by saying:

“You can’t go too easy. It’s always go to be extremely easy on the easy days… The easy day really is what makes for the hard days. And most athletes don’t give themselves enough rest or enough easy days. That’s the biggest challenge most self-coached athletes face.”

Have I beat you over the head with the importance of recovery? All right, let’s say that you are convinced. How do you then work recovery properly into your training plan. Let’s look at recovery from 3 levels. First, recovery as part of planning an individual workout. Second, recovery as part of what is referred to as mesocycle. And third, recovery built in as part of your overall annual training plan. This is essentially a low-level, medium, and high-level view of recovery. It is this third high-level view of recovery as part of your big picture as you switch from year to year that I believe is the most neglected aspect of recovery, but we will start with the individual workout.

One of the keys of any successful self-coached athlete, is to look at each workout with a purpose. What is the purpose of this workout? Is it just to maintain fitness, perhaps such as during a taper? Is it to focus on skills or technique and not on fitness at all that day? Is it to specifically increase anaerobic fitness or just base endurance? Or, is it for active recovery. Let’s suppose that you were about to schedule an anaerobic threshold bike workout for a Saturday morning, but noted that you will be finishing a strength training set the evening before. You have about 16 hours of recovery from the time you end the weight session until you perform the anaerobic workout. Are you going to be able to recover fast enough to fulfill the purpose of that anaerobic workout? Can you really perform that level of intensity coming off of a strength training session the night before? Not according to researchers at McMaster University in Hamilton, Ontario and the Washington University School of Medicine in St. Louis. They found that in healthy male athletes who regularly engaged in strength training needed 36 hours after a strength session to fully recover for the next session.

In this example, if the purpose of your cycling workout is to increase fitness by pushing your body to new stresses while cycling, it would be very difficult to accomplish this on weak legs coming off a strength session. If your legs can’t keep up, your cardio-vascular system won’t be pushed to new limits.

This is not to suggest that you put 36 hours in-between each workout. Intense strength training is certainly can be very stressful to the muscles and demands significant recovery time. But even in fit athletes, for moderately intense workouts, 24-48 hours is often just enough to recover sufficiently to do the next quality workout.

The takeaway point is that breakthrough workouts, or workouts that are designed to significantly stress the body and then result in increased fitness, those workouts need to be schedule around sufficient recovery. Does this mean you have to completely rest for two days after a 40K time trial? Not at all. Active recovery like swimming and spinning need to be viewed not as unimportant lazy days, but as critical components to recover for the next workout in order to put the body into a position to stress it again to stimulate the overcompensation process.

This is one of the reasons I am skeptical of the long week-end brick, which is particularly common for Ironman training. Putting a 4+ hour ride the day before a 2+ hour run does not meet the spirit of recovery. Again, let’s go back to purpose, and looking at the purpose of a workout. If your purpose is to prepare and condition the body to run after cycling 100 miles, then I believe that you would be better off to add a 1 hour run immediately after your ride in order to fulfill that purpose. If your purpose of a 2 hours run is a quality run that increased your endurance base and possibly even a bit of intensity, performing that the day after a century ride does not support that workout purpose. Placing your 2-hour run several days after the long ride allows for a quality long run, while adding 30 minutes to an hour immediately after your long ride meets the needs of preparing the body to run long after a long bike.

I should point out, however, that there is also evidence that 2 days of intense workouts or high volume can be interpreted as one long workout day by your body. Doing back-2-back breakthrough workouts followed by an even bigger increase in recovery of 2 or more days, can also yield good results, but the risks are high. I think that experienced athletes can manage this kind of load within a 30-hour period. I am also concerned when athletes use any kind of active recovery run. Running is a load bearing exercise. While swimming and cycling make for excellent active recovery, and can be done with very little increased breakdown in the muscle tissue, it is very difficult to perform any kind of run that will help speed recovery. Run workouts should be reserved to maintain or build fitness, not to recover.

So, in summary, as you schedule any individual workout, ask yourself if you have allowed for sufficient recovery to achieve the purpose of that workout. Again, as Dr. Bopma said, recovery should be a determinant factor in your training plan.

By the way, we have discussed the importance of recovery in terms of improving the quality and purpose of each workout. We haven’t even touched on the subject of the risk of increased injury when performing intense workout without sufficient recoveries.

The next aspect of recovery is at a slightly broader picture and is not nearly as complex. Built into periodization theory is the concept of cycles including microcycles, mesocycles, and macrocycles. You might be more familiar with the terms “training week,” “training phase,” and “annual training plan”. We just discussed the microcycle and how to plan a day or week. The mesocycle is how to group all of these microcycles together. You are probably aware of the terms that we put on these mesocycles such as prep phase, base phase, build phase or race phase. How do you plan recovery into your mesocycle? This is the easy part of planning your training. It is simply placing an easy microcycle, or easy week, into your mesocycle. Or, in English, an easy week out of every 3-5 weeks where volume and intensity are reduced. This concept is so widely recognized and implemented into athletes plans that it is hardly worth discussing, except for the fact that it demonstrates that recovery is more than just a one or two-day event. It is something to be considered on a broader timeline, which sets me up for the next piece of recovery, planning it into your macrocycle, or annual training plan.

Too many athletes simply go from one training year to the next without a break in-between. True periodization calls for a significant break in training at the end of one macrocycle to the next, anywhere from 4-8 weeks. Many athletes are scared to death to drastically reduce their training at the end of the year for fear they will lose fitness. And they are right. They will lose fitness. Reducing training for 1-2 months will result in a loss in fitness. But the trade off is improved fitness the following year.

Note that I am not saying taking 1-2 months off. I am saying drastically reducing your training for 1-2 months. Although I would recommend taking off at least a week completely, maybe more, the remainder of what is known as that transition phase can be filled with activity.

To help you feel better about reducing volume at the end of the training year, let’s cover some facts about what you can safely reduce in the transition phase without significant loss of fitness.

Under certain conditions, training volume has been shown to be reduced by 70-80% for 4 weeks in an off-season without significant loss in fitness. You can cut your volume from 10 hours to 2 hours a week, for example. However, this has only shown to be effective if frequency and intensity remain. Frequency can only be reduced by 20-30%. Even though your total training hours might go down to just a few hours a week, your frequency needs to stay relatively high, perhaps from 6 days of training a week to 4 days per week in order to minimize fitness loss. In fact, a study in the British Journal of Sports Medicine showed that cyclists who reduced training to just 3 days a week for 3 weeks reduced their VO2max from 59.7 to 58.8, a drop of just ½%. However, intensity can only be cut by 10-20% as a fraction of your total volume to mitigate fitness loses. There has to be some intensity maintained even in that transition phase in order to mitigate those fitness losses. Most experts also agree that in order to only drop intensity by 10-20%, volume can’t drop a full 80% in order to fit in enough time for intensity, and that 60% is a better drop in volume in order to have time to fit in some intensity.

My plea to you as an athlete, is to consider taking at least 4-6 weeks of drastically reduced volume this off-season. I know that for many of you, taking November and December off each year does not require much prodding. In fact, many look forward to that break. My message is aimed at the athlete who is terrified of ever pulling back in training. You have multiple athletes, coaches and researchers to back up your decision to take it easy. After a year of disciplined training, frankly you deserve the break.

Moving on. There comes a time as I prepare each Tri Talk episode when I have to decide if the topic is something I either understand already and want to share, or something I don’t know and want to research and then put it on the show when I feel I fully understand it. Training with power certainly falls in the latter category. It seemed that each time I was about to put it on the show, I felt unsettled and somewhat dishonest in presenting it, not sure that I could sincerely say I understood all the options and concepts. That is, until, I spoke to Peter Cummings, and expert in cycling training. Let’s take some time and remove the last fears and reservations you have about training with power. This interview runs a little long at just over 20 minutes, but I hope it will help you understand power and what options you have.

(audio interview, transcript not available)

That’s all for Episode 52. I’ll be back in 2 weeks where we’ll cover the last in our series of periodization, and I’m off to cover the 70.3 championships. I couldn’t sneak my way in with media credentials to Hawaii, but I managed to get them for Clearwater and I’ll be bringing you some on-the-scene from the 70.3 championships! See you in a couple of weeks!