Creatine 2010

Creatine 2010 - Creatine Background Creatine a compound...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Creatine Background Creatine, a compound endogenously synthesized by the liver, pancreas, and kidneys, comprises three amino acids: Arginine, Glycine and Methionine. Creatine is also found abundantly in red meats, fish and other animal products and typically comprises 1 to 2 grams daily. For this reason, some suggest that vegetarians might get greatest benefit from taking this supplement. Except vegetarians, taking this supplement may benefit people who have higher turn over rate or higher new tissue growing rate, such as athlete. However, kidney or liver failure patients should prevent taking it to cause their kidney and liver much more burdens. How much creatine does our body have? Approximately 95 – 98% of creatine is stored in muscle and varies with the amount of muscle mass (average 3-4 gram creatine per kg dry muscle). The remaining 2- 5% is stored in other tissues of the body such as the brain, heart and testes. Creatine exists in the muscles as a dynamic equilibrium of 2 similar compounds: 40% is in the free creatine (Cr) form and 60% is in the phosphocreatine (CP) form. Approximately 2 grams of creatine is converted to creatinine and is excreted daily. Studies have shown that the human muscle can store up to 5 grams of creatine per kilogram. So, by taking a creatine supplement you can raise your levels from 3.5 to 5 grams of creatine - and thus enjoy more of the benefits of creatine. Purported Health Effects ..... Now is when the fun begins . Provides Energy for Muscles Why do we define creatine as a “means to enhance energy utilization, including energy production control and efficiency“ ? Here comes a quick review of biology. In your body you have a compound called ATP (adenosine tri-phosphate) which is an energy containing compound. It acts as an immediate energy source of your body; ie. when you are doing an intense quick burst activity - such as lifting a weight or sprinting, your muscles must contract and need a quick source of energy from a ATP reaction which is that ATP broken down into two simpler chemicals ADP (adenosine di-phosphate) and inorganic phosphate. Unfortunately, we do not have an endless supply of ATP. In fact, your muscles
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
only contain enough ATP to last about 10-15 seconds at maximum exertion. Therefore, here is where the creatine comes in - or more specifically the creatine phosphate (CP). CP is able to react with the ADP in your body and turn "useless" ADP back into the "super useful" energy source – ATP. In other words, CP makes ATP energy cycle go on for a longer time. CP + ADP -->> Cr + ATP (require creatine kinase) So, creatine will provide you with more energy when you work your muscles to fatigue. Creatine can be very beneficial to the athlete who does sprinting, weight lifting and any other high intensity low duration activity. After taking a creatine supplement you are able to do more reps, sets or weights before hitting the fatigue point. As well as increase the rate of resynthesis during rest
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 06/09/2010 for the course MFC 141 taught by Professor Horvath during the Summer '10 term at SUNY Buffalo.

Page1 / 7

Creatine 2010 - Creatine Background Creatine a compound...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online