Creatine, which is synthesized in the liver and kidneys, is transported through the blood and taken up by tissues with high energy demands, such as the brain and skeletal muscle, through an active transport system. The concentration of ATP in skeletal muscle is usually 2–5 mM, which would result in a muscle contraction of only a few seconds. During times of increased energy demands, the phosphagen (or ATP/PCr) system rapidly resynthesizes ATP from ADP with the use of phosphocreatine (PCr) through a reversible reaction with the enzyme creatine kinase (CK). In skeletal muscle, PCr concentrations may reach 20–35 mM or more. Additionally, in most muscles, the ATP regeneration capacity of CK is very high and is therefore not a limiting factor. Although the cellular concentrations of ATP are small, changes are difficult to detect because ATP is continuously and efficiently replenished from the large pools of PCr and CK. Creatine has the ability to increase muscle stores of PCr, potentially increasing the muscle’s ability to resynthesize ATP from ADP to meet increased energy demands.
Focus on form. Good form means you can reap all of the benefits of your workout and avoid injuries at the same time. To maintain proper form, pay attention to your posture (stand tall with chest lifted and abs held tight), move slowly (this ensures you're relying on muscles, not momentum, to do the lifting), and remember to breathe. Many people hold their breath while exerting, but exhaling during the hardest part of the exercise helps fuel the movement.
According to research from the University of Stirling, for optimal protein growth, weight lifters need to eat 0.25 to 0.30 grams of protein per kilogram body weight per meal. For a 175-pound person, that works out to 20 to 24 grams of protein at every meal. You’ll get that in three to four eggs, a cup of Greek yogurt, or one scoop of protein powder.
After all, you’ve probably seen the countless workouts, diets, supplements, programs, products and people claiming that super fast muscle growth is possible. You’ve probably also seen the click-bait headlines (“How To Build 20lbs Of Muscle In Just 6 Weeks!”) and the unbelievable transformations of supposedly “natural” people (bodybuilders, celebrities, athletes, fitness gurus on social media, etc.) that clearly prove it can happen faster than this.
In particular situations, a coach may advise performing the valsalva maneuver during exercises which place a load on the spine. The vasalva maneuver consists of closing the windpipe and clenching the abdominal muscles as if exhaling, and is performed naturally and unconsciously by most people when applying great force. It serves to stiffen the abdomen and torso and assist the back muscles and spine in supporting the heavy weight. Although it briefly increases blood pressure, its is still recommended by weightlifting experts such as Rippetoe since the risk of a stroke by aneurysm is far lower than the risk of an orthopedic injury caused by inadequate rigidity of the torso. Some medical experts warn that the mechanism of building "high levels of intra-abdominal pressure (IAP)...produced by breath holding using the Valsava maneuver", to "ensure spine stiffness and stability during these extraordinary demands", "should be considered only for extreme weight-lifting challenges — not for rehabilitation exercise".
I get lost every time I walk into my neighborhood GNC… the people who work there know their stuff, but nobody knows my body better than me and that’s where it all falls apart, but I’m working on that. I agree, I rather have grass-fed and more natural options as opposed to anything containing GMO in the products… The point is to become healthier, not go the other way…. But I also don’t want to get too much soy in my diet either… My wife is doesn’t want it for me and it’s given me headaches too, so I’m not really one for those. I guess small amounts of soy should be okay, right? Could someone be allergic to soy? There’s tons of other options though and I’m going to have to really look more into these here coz it has everything I’ve been looking for! Thanks for putting this together!
Forbes, S. C., Sletten, N., Durrer, C., Myette-Côté, E , Candow, D., & Little, J. P. (2017, June). Creatine monohydrate supplementation does not augment fitness, performance, or body composition adaptations in response to four weeks of high-intensity interval training in young females. Human Kinetics Journals, 27(3), 285-292. Retrieved from http://journals.humankinetics.com/doi/abs/10.1123/ijsnem.2016-0129
^ The effect of HMB on skeletal muscle damage has been assessed in studies using four different biomarkers of muscle damage or protein breakdown: serum creatine kinase, serum lactate dehydrogenase, urinary urea nitrogen, and urinary 3-methylhistidine. When exercise intensity and volume are sufficient to cause skeletal muscle damage, such as during long-distance running or progressive overload, HMB supplementation has been demonstrated to attenuate the rise in these biomarkers by 20–60%.
In otherwise sedentary and healthy men given a loading phase of creatine followed by 11 weeks of maintenance, the glucose response to an oral glucose tolerance test is reduced by 11-22% (measurements at 4-12 weeks with no time dependence noted) which was not associated with changes in insulin levels or sensitivity. Elsewhere, a study in vegetarians (5g daily for 42 days) failed to find a reduction in postprandial blood glucose.
Still, any supplement should be used carefully and after discussion with a dietitian or doctor. There are some potential health risks and side effects that you should be aware of before taking creatine. Muscle cramping, nausea, diarrhea, dizziness, gastrointestinal pain, dehydration, weight gain, water retention, heat intolerance, and fever have all been linked to the supplement. (13)
However, a much more accurate determination of how much fluid is necessary can be made by performing appropriate weight measurements before and after a typical exercise session, to determine how much fluid is lost during the workout. The greatest source of fluid loss during exercise is through perspiration, but as long as your fluid intake is roughly equivalent to your rate of perspiration, hydration levels will be maintained.