The alphabet of sport science research starts with Q

By Iñigo Mujika on August 22nd 2013
Aerogenerator. Photo: Iñigo Mujika

Foto: Iñigo Mujika

This is the title of my latest editorial for the September 2013 issue of the International Journal of Sports Physiology and Performance. The Q in the title refers to “quantification”. In the editorial, I emphasize the importance of a precise and reliable quantifiaction of the training loads to analyze and establish causal relationships between the training performed by an athlete or a group of athletes and the resultant physiological and performance adaptations. In the blogpost about my previous editorial, “Too Young to Vote, Old Enough to Be an Olympic Champion”, I highlighted the first few lines; this time I am displaying the last two paragraphs:

Read and comment The alphabet of sport science research starts with Q

Rønnestad BR, Mujika I.

Scandinavian Journal of Medicine & Science in Sports. 2013 Aug 5. doi: 10.1111/sms.12104.

Here we report on the effect of combining endurance training with heavy or explosive strength training on endurance performance in endurance-trained runners and cyclists. Running economy is improved by performing combined endurance training with either heavy or explosive strength training. However, heavy strength training is recommended for improving cycling economy. Equivocal findings exist regarding the effects on power output or velocity at the lactate threshold. Concurrent endurance and heavy strength training can increase running speed and power output at VO2max (Vmax and Wmax , respectively) or time to exhaustion at Vmax and Wmax. Combining endurance training with either explosive or heavy strength training can improve running performance, while there is most compelling evidence of an additive effect on cycling performance when heavy strength training is used. It is suggested that the improved endurance performance may relate to delayed activation of less efficient type II fibers, improved neuromuscular efficiency, conversion of fast-twitch type IIX fibers into more fatigue-resistant type IIA fibers, or improved musculo-tendinous stiffness.

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Prof. Louise M. BurkeGiven your expertise in carbohydrate and fat metabolism, what is your take on the “train low, race high” approach that suggests endurance athletes should train with low carbohydrate availability but replenish their glycogen stores for competition? Should they plan this type of strategy within their training and nutritional programmes or will something like this be achieved “by chance” anyway?

There is good hypothetical and research support for the idea that training with low glycogen stores increases the “strength” of the exercise stimulus —in other words the signalling response to a given exercise load is increased when it is done with low glycogen concentrations, producing a greater increase in the synthesis of many of the proteins associated with adaptation to exercise. We can measure greater increases in markers of the signalling, transcription and translation processes of protein synthesis, as well as an increased abundance of the proteins —especially, enzymes and transporter proteins that are involved in fat and carbohydrate metabolism in the muscle. This has been dubbed “training smarter” —or an attempt to get more “bang” for your training “buck”. Another model of “train low” is to do your workout in an overnight fasted state and without the intake of carbohydrate during the session.

Read and comment Interviews with the elite – Louise M. Burke: “I am always suspicious when new dietary crazes hit”

A humble tribute to the greatest of men

By Iñigo Mujika on June 12th 2013

Long walk to freedomBack in 1997, a little more than a year after returning from Saint-Étienne, where I got my first Ph.D., I was lecturing on sports physiology at the Basque Institute of Physical Education. Months before the schoolyear ended, I decided that I wanted to spend the summer doing research in one of the world’s reference centers: the Sports Science Institute of South Africa. I sent a letter to Prof. Tim Noakes and he kindly accepted my application. Besides getting a couple of publications (Med. Sci. Sports Exerc. and J. Appl. Physiol), cycling many 100-km laboratory time trials, giving away four muscle biopsies in my left vastus lateralis, and suffering the theft of a car and a bike, my time in South Africa gave me the opportunity to meet great people, discover a fabulous country and further my admiration for the country’s president of the time, Nelson Mandela.

It was not until January 2012 that I had another opportunity to visit South Africa, as a physiologist for the Spanish swimming team preparing for the London 2012 Olympic Games. During that trip, I bought the memoirs of Nelson Mandela, the greatest moral and political leader of our time. The book is called Long Walk to Freedom, and it is one of the most impressive books I have ever read. I consider it indispensable reading, full of experience, hope, dignity and greatness.

I know this is a long blogpost, the longest I’ve ever put together, but I would encourage every reader to take the time to read it. There are so many lessons for all of us to learn in the life and words of Nelson Mandela…

Read and comment A humble tribute to the greatest of men

Louise M. Burke

Louise M. Burke (Photo: Australian Institute of Sport)

As you all know, one of the keys to elite sports performance is proper nutrition. Without it, there is no way to achieve the desired body mass and composition, and no way to support the demands of training and competition. Adequate nutrition, on the other hand, ensures that an athlete’s energy requierements are satisfied, it promotes training adaptations and it contributes to short-, medium- and long-term recovery.

That is why I have asked my friend Prof. Louise M. Burke to be our next guest in the section “Interviews with the elite”.

Read and comment Interviews with the elite: Louise M. Burke, sports nutritionist

Irreparable damage to sport

By Iñigo Mujika on April 6th 2013

In the past few weeks you have heard me say again and again that doping has no place in the new cycling, that sport without doping is not a utopia, etc.

Unfortunately, there are still some who do not seem to understand that that game is over, that it is not possible to continue to play with the credibility of sport, athletes and those of us who try in a clean and honest way to help them give the best of themselves in training and competition.

It hurts me to be in the need to inform you that one of the riders hired by the Euskaltel Euskadi team this season is one of these characters who don’t understand what we are talking about. While he had the dignity to admit that the decision to dope was exclusively his own the damage inflicted on those of us who are part of this team (riders, technical and support staff, sponsors, etc.) is irreparable.

Press release from the team.

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Interview on Euskal Telebista (Basque TV)

By Iñigo Mujika on March 29th 2013

Interview on  Euskal Telebista (Basque TV), on March 27, 2013 (in Spanish):