Triathlons are tough. There is no way around it. Whatever distance you want to complete, doing one is a big project from start to finish. Likewise, training to have good results in swimming, cycling, or running is a big project, but combining all three starts to look overwhelming. This article will try to break down […]
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Here’s a classic problem: you love mountain bike racing, and you love road racing, but you’re not quite sure how to tailor a training schedule that will give you the best of all worlds when it comes to racing each discipline. Have no fear. Training to race on the road and the mountain bike don’t
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The arrival of power meters sparked a new craze in the 1990s, and they are now part and parcel of the make-up of most pro riders. Power meters are invaluable tools for pacing control and interval sessions and are especially useful for time trial training. But the bottom line is that they are not necessary.
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IT SOUNDS pretty straightforward. You, your bike, and the clock, riding in splendid isolation as quickly as you can, away from the rough and tumble of the peloton. In theory, a time trial should be a simple test of your ability to ride your bike as fast as possible over a set distance. But if
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Image by Luca Pedroni An individual time trial is a specific discipline used as an introduction to cycling races in many countries. After a short introduction to the simple rules, beginners can ride a fair time trial. Nevertheless, time trials are challenging to master, and even professionals can significantly improve their trialling. It’s hard to
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If you are a time trialist or triathlete, one of the benefits of using a power meter is optimizing your aerodynamics. A better position on the bike supplied with aerodynamic equipment can help you to save seconds or even minutes in a time trial. Now I will show how you can use a power meter
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Heart rate monitors have been used by all kind of endurance athletes for the last 20 years. Since there is a strong correlation between oxygen consumption and heart rate, knowing your current heart rate is a great indicator of your current oxygen uptake, thus how hard you work. When you’ve used your monitor a couple of times, you will start to notice that you ride with a low heart rate the pace can be maintained for hours. Riding with a heart rate close to your maximum heart rate can be maintained for a limited time only. This is a very short description of why it can be useful to know your heart rate during bike ride. Read the 5 steps for better heart rate monitor training
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Today is the first stage in Tour de France 2008 with big mountains. This is always an exciting stage to watch because it is the first really indication of who will be able to win the yellow jersey. Nevertheless, we will ver likely only find out who will NOT be able to win the yellow jersey today. But it should certainly be interesting to watch.
You will probably hear the commentators talk about the skill climbing and maybe also a bit more technical about how many watts each rider has performed in tests before the Tour de France this year.
Watts the problem?
It seems like there are two values when people discuss power outputs: Watts and watts per kilogram. The first one is an absolute value that predicts performance in flat races while the second one is often used to predict performance on hills. Watts per kilogram is often used as a more sophisticated way to present physical performance because it represents a power output that is relative to your body weight. Experienced riders already know that when you climb, body weight matters. Thus, additional fat stores are more expensive to carry on mountain stages than on flat stages.
Watts per kilogram the golden standard?
Watts per kilogram is often a better indicator of overall performance than absolute watts. But it is not as precise predictor of performance as it could be. With some simple adjustments it would give you a better picture of how you will perform. What I am talking about is making some values that give the body weight slightly less impact when you predict climbing performance and add some impact to your body weight when you predict time trial performance.
It all depends…
The reason for these modifications is because climbing results cannot be predicted by watts per kilogram only. The problem appears when small riders achieve greater values in watts per kilogram, but don’t win the mountain stages. This can be explained by the fact that the external weight of the bike is carried by the rider independently of body size and several other factors that influence on overall performance e.g. gradient, wind resistance and tactics. Thus, it is not possible to simplify the prediction of performance by using the metric watts per kilogram. Yes, that is definitively one of the best predictors we have, but it can be optimized with some modification and other factors should also be at least considered.
Watts per kilogram^X would possible be a better predictor of performance because there are no events that can be predicted accurately by watts or watts per kilogram only. Body weight will always play a role and normally play the biggest role in the mountains (X closer to 1). Also it is worth to remember that body weight influences on time trial performance even though it is not very important in flat time trials with a constant high race velocity (X closer to 0).
Maximum power output or watts per kilogram? Read More »
An individual time trial is a discipline with requirements for physiology, technique, tactics and psychology. Each of these categories has a potential for optimization that will make you faster. In the first article I will take a closer look on what you can do to optimize your physical performance in time trials.
VO2 max and threshold power are important
It is clear that the most obvious parameter for time trial performance is your physiological status. Maintaining a large percentage of your maximum oxygen consumption over a long period is essential in a time trial. Genes play an important role for your maximum oxygen consumption, so you will benefit from choosing your parents carefully. (If you read this it is probably already to late, sorry”¦)
Interval training can improve your aerobic system
Forget about the genes for a while. You have a great opportunity to optimize your aerobic engine through interval training. These intervals should be focused on workloads that require intensities at maximum oxygen consumption (VO2 max) or just below. Training at this intensity not only boosts your VO2 max, it also improves your performance at lower intensity. That is probably not known by all cyclists, but the physiological adaptations you get from this training is the same as you get from the long ”˜threshold’ intervals. There is nothing magic about training at the threshold, it is not better than training slightly above or below the threshold. The interesting thing is how great a stimulus you put on your oxygen system and how long time you spend on that intensity, because that is what makes you better.
Use time trial power outputs to plan future intervals
Performing a time trial with a mounted power meter or simply making a maximum power output test will give you a picture of what intensity is required in the intervals. Intervals can be performed in many ways and they work wonderful for most riders – especially if they are performed as described in this article. The whole idea of doing intervals is to split up a long ride into shorter sections with high intensity. By doing this, you will be able to get more time at your planned oxygen consumption with less effort.
Use power output to control pace
I normally recommend serious riders to use a power meter for optimization of physical performance. The reason for this is that it is possible to control the workload very precisely, securing me that they train exactly what I am interested in. There are a lot of riders who start out too fast in intervals and then slow down in the last part of the interval. The problem about this is that the first part of the interval requires such a great amount of anaerobic work that they get exhausted too early. They reduce the pace and can’t maintain the power output required to stimulate the aerobic system sufficiently. The result is that the interval subjectively is a very hard experience, but objectively a poor controlled aerobic interval. If they just know how many watts they can maintain over a given period it is much easier for them to control the pace during the interval.
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Your body position and the bike’s aerodynamics play a big role in time trials. A couple a years ago I read a comparing of different body positions and what influence it had on the finishing time in a 40k time trial. I am not sure, but I think I saw these results back in 1997, so this is not breaking news, rather nostalgic news.
An interesting question is how much time you can save by using expensive aero wheels, an aero frame or saving some pounds? There are probably more precise answers to these questions than this report calculates for you, but it gives you an idea of what difference these changes can give you.
One of the interesting findings is that slower riders will benefit more from a lighter bike than top riders will, while aero wheels and frames will give the biggest advantage to faster riders. This is probably because the aerodynamic drag requires a relative larger percentile of the workload at high speeds.
Optimized aerodynamics is better than weight savings
The conclusion for this report is that the biggest changes in aerodynamic drag and in cycling performance come from changes in body position. A more aerodynamic body position can improve your 40k time trial by over 6 minutes (that is really something!) The report also concludes that improving the bike’s aerodynamics is more important than weight savings. A pair of aero wheels can reduce you 40k time trial time with 1 or 2 minutes.
Read the report about cycling aerodynamics
Report about time trial aerodynamics Read More »