Wednesday, January 16, 2008

Creatine supplementation

The muscle only obtains energy for muscular contraction through the energy liberated by the rupture of ATP molecules (adenosine + phosphate + phosphate + phosphate).

When this rupture takes place energy is released and it is used by the muscle This reduces the ATP to ADP + P. ATP is very limited and it allows some few seconds of intense activity (2 to 3 seconds), and for that reason it is necessary to reload it quickly if we want to prolong the effort for more seconds.

To do this the energy contained in another compound, PCr (phosphate + creatine) is used. This compound, also limited, allows to rebuild ATP, prolonging the high intensity effort until 20 seconds approximately, until its concentration in the cell decrease. Because PCr has an essential role in ATP levels recovery, this decrease harms the work capacity. Next graphic shows the changes in muscle ATP and PCr during the first seconds of maximal work.

What would happen if we increase PCr levels in the muscular cell?

We could maintain elevated ATP concentrations for more time and then we could maintain high intensity effort for more time.

Also, we would accelerate the ATP recovery from high intensity efforts, and to repeat many more times that effort.

Translated to climbing, will allows to make harder boulder problems, more longer more quantity of problems per training session, In boulder comp, will allows a faster recovery from attempts, and maintain a high intensity work capacity throughout the whole event, and in the case of rock climbing, it will allow us to work routes, and if the same are divided with some good rests, will allows to use as energy source to arrive from to until the top.

To achieve this one can make in two ways, with training, in particular the intermittent training (interbloque), and/or increasing creatine stores.

So creatine supplementation is one of the main ergogenics supplements that exist at the moment.

The speed and efficiency of the PCr replacement depends mainly on the total muscular creatine, so supplements with creatine helps to increase the stores, with the consequent performance improvement.

Some of the proven effects scientifically are the following ones (Naclerio Ayllón 2007):

1. increase intramuscular creatine levels according to each person's natural limit. (Branch 2003, Syrotuik & Bell 2004, Walzel, and cols. 2002).

2. improves the speed of the recovery processes and it slows the fatigue in intense and repeated works with incomplete recovery rests(<>

3. allows to maintain bigger work volumes with the wanted intensity (Branch 2003, Rawson & Volek 2003)

4. induces an cellular volume increment, due to their osmotic effect. The hydration and cellular expansion constitutes fundamental stimulus to attenuate the catabolism and to stimulate protein synthesis, favoring the regeneration processes and hypertrophy. (I gave Pasquale 1997, Persky & Brazeau 2001).

5. facilitates calcium ions release from the sarcoplasmic reticulum speeding up the contraction-relaxation processes because the acto-miosine bridges are formed and they break faster facilitating the capacity of the fiber be stimulated in smaller periods of time , improving again the work efficiency (Nooman, and cols. 1998).

To be able to achieve a maximum saturation of the intracelular creatine deposits, the only way is through the ingest of a nutritional supplement that contains a high concentration of creatine monohydrate. There are two ways to take creatine:

First one is to use a loading period, with 0,25 to 0,35 grams per kilogram of body weight distributed in 4 daily takings during 7 days, and then to a maintenance period of with 0.03 to 0,09 grams per kilogram of body weight. Due to the increment of the cellular volume that has as effect, it accumulates water in the cells, producing this way an increase in total body weight, something that is counteractive in climbing. During this loading period it is probable an increase from 0,75 to 1 Kg. of body weight, as consequence of that increase of water in the cells.

Second way, is through a longer loading phase, using 5 grams of creatine in a daily dose for a 30 days period, wich allows to arrive to similar creatine concentrations, but after that period of time, and recently there to get benefits. Then it should be continued with the period of maintenance. This option is the most recommended for climbers that are not carrying out trainings that are mainly beneficiaries from creatine (those that train several capacities at the same time), but in climbers that are in a period of maximum force training they will be directly beneficiaries if the creatine accumulates quickly and they take advantage of it to improve the training quality and indirectly it will impact in the performance..

Lamentablemente, la creatina no es para todos, ya que existe un 30% de la población que no es sensible a la creatina, por lo tanto no se verán beneficiados por este suplemento.

To facilitate the absorption, the creatine monohydrate ingestion should be accompanied by high glycemic index beverage (fruit juice),.

The creatine supplementation should be accompanied by a washing period after 2 or 3 months, to allow natural creatine synthesis. This period is approximately of 1 month before a new loading phase.

Creatine is not for every one. 30% of the population is not sensitive creatine, therefore they won't be benefited by this supplement.


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