This basic form of creatine comes in two forms, one of which involves the removal of the monohydrate (which results in creatine anhydrous) that converts to creatine monohydrate in an aqueous environment, but due to the exclusion of the monohydrate it is 100% creatine by weight despite creatine monohydrate being 88% creatine by weight, as the monohydrate is 12%. This allows more creatine to be present in a concentrated formula, like capsules.
Testosterone replacement therapy is currently only FDA approved for men who have been diagnosed with hypogonadism, but it’s also prescribed off-label for older men who take it in hopes that it will improve their libido. The use of testosterone therapy is increasingly common in the United States, with more than 2 million men receiving the therapy. Not every man benefits from taking testosterone supplements. Testosterone is available in different forms, including topicals such as gels, creams, and patches; injections; and pellets that are surgically placed directly beneath the skin. (7)
In vitro studies on endothelial cells have noted that the benefits of creatine against atherosclerosis (via immune cell adhesion to the endothelial cell) are blocked with the pharmaceutical ZM241385, a high affintiy adenosine A2A receptor antagonist. This particular receptor subset (A2A rather than other adenosine receptors) and its inhibition are similar to caffeine, suggesting that caffeine may have an inhibitory effect on this mechanism of creatine.
Don’t get us wrong—cardio is important for keeping your body fat down and keeping your heart health in check. (Bonus points if you run or bike, since outdoor exercise is linked to better energy and improved mental health.) But when it comes to building muscle, hitting the treadmill won't help you much. “Every component of exercise, minus cardio, can help with muscle hypertrophy,” which is the scientific term for muscle building, says Michelle Lovitt, an exercise physiologist and trainer in Los Angeles. “Cardio tends to burn calories and puts your body in a deficit, which is great for leaning out, but not building mass.”
Lifters who follow high-volume or high-intensity resistance-training programs, as many bodybuilders do, may also benefit from carbohydrate intake immediately post-workout. Compared with a placebo, carbohydrates combined with protein immediately post-workout and one hour after a bout of resistance exercise have been shown to increase insulin levels and rates of glycogen resynthesis.
Creatine is not an essential nutrient as it is naturally produced in the human body from the amino acids glycine and arginine, with an additional requirement for methionine to catalyze the transformation of guanidinoacetate to creatine. In the first step of the biosynthesis these two amino acids are combined by the enzyme arginine:glycine amidinotransferase (AGAT, EC:22.214.171.124) to form guanidinoacetate, which is then methylated by guanidinoacetate N-methyltransferase (GAMT, EC:126.96.36.199), using S-adenosyl methionine as the methyl donor. Creatine itself can be phosphorylated by creatine kinase to form phosphocreatine, which is used as an energy buffer in skeletal muscles and the brain.
In fact, most facilities offer special classes for seniors along with a knowledgeable staff that can guide you through proper exercise techniques. However, this 20-minute workout can be done anywhere, anytime. All you need is a light pair of dumbbells (3-5 pounds to start, 8-10 pounds as you get stronger) and a good pair of shoes and you’re ready to find the new active you! For best results, find a friend or partner to take this challenge on with you. You will keep each other accountable and safe while you get younger together!
For some men who are aging, the idea of testosterone replacement therapy seems like an enticing option. Effects such as increased vigour, increased muscle strength, enhanced memory, sharpened concentration, a boost in libido and increased energy levels can make this drug seem like the miracle anti-aging therapy. However, it is unclear whether or not this therapy can offer any health benefits to men who simply have a normal age-related decline in testosterone. Few large studies have examined the effects of this therapy in men who have a healthy testosterone level and the few smaller studies that have been conducted reveal conflicting results.
A double-blind study provided 20 g/day of creatine monohydrate for 5 days to qualified sprinters and jumpers who performed 45 seconds of continuous jumping and 60 seconds of continuous treadmill running. Supplementation enhanced performance in the jumping test by 7% for the first 15 seconds and 12% for the next 15 seconds, but there was no difference for the final 15 seconds. There was a 13% improvement in the time of intensive running to exhaustion .
In standard dosages (5-10g creatine monohydrate) the bioavailability of creatine in humans is approximately 99%, although this value is subject to change with different conjugates (forms) of creatine and dosages. Coingestion of cyclocreatine (an analogue) can reduce uptake by about half and coincubation of taurine, choline, glycine, or beta-alanine had minimal attenuation of absorption, which is likely not practically relevant. The inhibition noted with cyclocreatine may be due to receptor saturation.
The incidence of liver damage from herbal and dietary supplements is about 16–20% of all supplement products causing injury, with the occurrence growing globally over the early 21st century. The most common liver injuries from weight loss and bodybuilding supplements involve hepatocellular damage with resulting jaundice, and the most common supplement ingredients attributed to these injuries are catechins from green tea, anabolic steroids, and the herbal extract, aegeline.
The regulation of testosterone production is tightly controlled to maintain normal levels in blood, although levels are usually highest in the morning and fall after that. The hypothalamus and the pituitary gland are important in controlling the amount of testosterone produced by the testes. In response to gonadotrophin-releasing hormone from the hypothalamus, the pituitary gland produces luteinising hormone which travels in the bloodstream to the gonads and stimulates the production and release of testosterone.
The main consequence to using weight training exercises is the increase in muscle strength that you'll develop over time. You'll also develop stronger bones as well as gain a better general posture. In short, maintaining good muscle strength will allow your body to move more freely from the moment you wake up in the morning to the moment you fall asleep at night.
The use of bodybuilding supplements has risen by ten folds. Gone are the times when bodybuilders worked out and consumed nutritious foods to supplement their body. The effect is pretty clear in both the cases. While professional body builders building a natural body remained in shape even after quitting the gym, people who depended on heavy supplements have been found to only lose the shape but also go through premature ageing. The best thing, however, is to eat proper food and take supplements too, which is what bodybuilders usually do. Here are some pros and cons of using bodybuilding supplements.
The maximum amount of creatine the body can store is about 0.3 gram per kilogram of body weight . The creatine content of skeletal (voluntary) muscles averages 125 millimoles per kilogram of dry matter (mmol/kg/dm) and ranges from about 60 to 160 mmol/kg/dm. Approximately 60% of muscle creatine is in the form of PCr. Human muscle seems to have an upper limit of creatine storage of 150 to 160 mmol/kg/dm. Athletes with high creatine stores don't appear to benefit from supplementation, whereas individuals with the lowest levels, such as vegetarians, have the most pronounced increases following supplementation. Without supplementation, the body can replenish muscle creatine at the rate of about 2 g/day .
Another study demonstrated that females receiving 4 days of high-dose creatine intake (20 g/day) followed by low-dose creatine intake (5 g/day) during 10 weeks of resistance training (3hours/week) increased muscle PCr concentrations by 6%. Also, maximal strength of the muscle groups trained increased by 20-25%, maximal intermittent exercise capacity of the arm flexors increased by 10-25% and fat-free mass increased by 60% .
In regard to carbohydrate oxidation during exercise, it appears that rats subject to intermittent physical exercise (which utilizes glycogen) have decreased lactate production during said exercise, suggesting a preservation of glycogen usage. This occurred alongside an increase in glycogen stores. This is thought to be due to phosphocreatine donating phosphate to replenish ATP. Without any changes in whole body metabolic rate, it indirectly causes less glucose to be required to replenish ATP, due to a quota needing to be met during exercise and creatine phosphate taking up a relatively larger percentage of said quota.
Creatine is an organic acid naturally occurring in the body that supplies energy to muscle cells for short bursts of energy (as required in lifting weights) via creatine phosphate replenishment of ATP. A number of scientific studies have shown that creatine can improve strength, energy, muscle mass, and recovery times. In addition, recent studies have also shown that creatine improves brain function. and reduces mental fatigue. Unlike steroids or other performance-enhancing drugs, creatine can be found naturally in many common foods such as herring, tuna, salmon, and beef.
In the United States, the manufacturers of dietary supplements do not need to provide the Food and Drug Administration with evidence of product safety prior to marketing. As a result, the incidence of products adulterated with illegal ingredients has continued to rise. In 2013, one-third of the supplements tested were adulterated with unlisted steroids. More recently, the prevalence of designer steroids with unknown safety and pharmacological effects has increased.
When endothelial cells have a higher creatine concentration, they appear to be mildly less permeable when incubated with 0.5-5mM creatine, while the higher concentration (5mM) is able to fully ablate TNF-α-induced neutrophil adhesion and both E-selectin and ICAM-1 expression. This effect was prevented with ZM241385, an A2A (adenosine) receptor antagonist, and since adenosine released by this receptor is known to be protective of endothelial cells, it is thought that creatine works vicariously through this receptor and adenosine release, thought to be due to releasing ATP (occurs in response to stress) which protects the cell via the A2A signaling system.
Glycogen synthesis is known to respond directly and positively to cellular swelling. This was demonstrated in an earlier study, during which rat muscle cells were exposed to a hypotonic solution in vitro to induce cell swelling, which increased glycogen synthesis by 75%. In contrast, exposing these same cells to a hypertonic solution hindered glycogen synthesis by 31%. These changes were not due to alterations in glucose uptake, but are blocked by hindering the PI3K/mTOR signaling pathway. It was later noted that stress proteins of the MAPK class (p38 and JNK) as well as heat shock protein 27 (Hsp27) are activated in response to increasing osmolarity. Furthermore, activation of MAPK signaling in skeletal muscle cells is known to induce myocyte differentiation via GSK3β and MEF2 signaling, which can induce muscle cell growth.
Taking creatine can also cause 5-10 lbs of water-weight gain. The stress from extra water causes muscle cells to grow faster. This is one reason why creatine supplementation increases muscle growth over the long term. Novice weightlifters see more benefits with creatine than seasoned athletes, since they have more muscle to gain. (That doesn’t mean athletes shouldn’t take creatine though.)
Cooke et al  observed positive effects of a prior (0.3 g/d kg BW) loading and a post maintenance protocol (0.1 g/d kg BW) to attenuate the loss of strength and muscle damage after an acute supramaximal (3 set x 10 rep with 120% 1RM) eccentric resistance training session in young males. The authors speculate that creatine ingestion prior to exercise may enhance calcium buffering capacity of the muscle and reduce calcium-activated proteases which in turn minimize sarcolemma and further influxes of calcium into the muscle. In addition creatine ingestion post exercise would enhance regenerative responses, favoring a more anabolic environment to avoid severe muscle damage and improve the recovery process. In addition, in vitro studies have demonstrated the antioxidant effects of creatine to remove superoxide anion radicals and peroxinitrite radicals . This antioxidant effect of creatine has been associated with the presence of Arginine in its molecule. Arginine is also a substrate for nitric oxide synthesis and can increase the production of nitric oxide which has higher vasodilatation properties, and acts as a free radical that modulates metabolism, contractibility and glucose uptake in skeletal muscle. Other amino acids contained in the creatine molecule such as glycine and methinine may be especially susceptible to free radical oxidation because of sulfhydryl groups . A more recent in vitro study showed that creatine exerts direct antioxidant activity via a scavenging mechanism in oxidatively injured cultured mammalian cells . In a recent in vivo study Rhaini et al  showed a positive effect of 7 days of creatine supplementation (4 x 5 g CM 20 g total) on 27 recreational resistance trained males to attenuate the oxidation of DNA and lipid peroxidation after a strenuous resistance training protocol.
Testosterone is available in different forms including patches, injections, and a topical gel which the body absorbs through your skin. The skin patch is applied once every 24 hours, usually in the evening, and it releases some amount of the hormone into the skin. The oral forms are usually attached to the gum or inner cheek twice daily from where it is absorbed into the bloodstream. After applying the topical gel over the body, it is important to wash your hands thoroughly to avoid exposing others to testosterone. The injections are usually administered every seven to 14 days depending on the formulation and the degree of deficiency of testosterone.
Creatine is mostly synthesized in the liver via AGAT and GAMT (the other locations are neurons, the pancreas, and kidneys) despite it not being stored in high levels in the liver like glycogen or adipose would be. Supplemental creatine is known to suppress AGAT by downregulating transcription, which probably occurs in humans (since the products of AGAT are reduced with creatine supplementation).
In addition to adequate protein, you need more calories (your protein intake contributes to your total caloric intake, so these two go hand in hand). Use the following formula to calculate the number you need to take in daily to gain one pound a week, and break down your diet using the macro guidelines listed above. (Give yourself two weeks for results to show up on the scale. If you haven't gained by then, increase your calories by 500 a day.)
Glutes have been enjoying a moment for awhile now, as #BootyGoals and #BootyGains are a coveted asset, so to speak, in the fitness world. Popular aesthetics aside, the quest for strong, powerful glutes is a good thing, as your large posterior muscles not only help you stand, sit, lift, and climb, but they also stabilize your pelvis and can help prevent back pain. Although you use your glutes to sit on your bike, cycling—depending on where and how you ride—doesn’t always build these important muscles.
Bodybuilders also understand how to diet. This is perhaps the most important aspect other athletes can learn from. I can’t think of any athlete that comes close to bodybuilders who know how to build massive amounts of muscle and then can diet with the type of precision that gets them absolutely shredded on a specific date. Most resistance training sports use weight classes to compete. It doesn’t take a rocket scientist to see that shedding body fat without losing muscle can be a major advantage. Competing at a lower weight class because you are leaner while maintaining strength and performance is a very valuable and effective strategy. Diet to build LEAN muscle to keep weight low for a competitive advantage.
Some anti-aging physicians also use sublingual ( taken under the tongue) forms of non-bioidentical testosterone like oxandrolone. I took oxandrolone with a physician’s guidance for about two weeks, and I got pimples and hair loss. I quit and was bummed that it didn’t generate enough impact to write a blog post about it. I have continued to recommend bioidentical testosterone since.
Aging (senescence, specifically) is characterized by deterioration in many biological processes, including energy supply and regulation of oxidative stress. Therefore, there are good reasons to believe that creatine may improve numerous variables that often worsen with age, including physical function and quality of life in people with osteoarthritis, blood lipids, blood sugar regulation in type 2 diabetes, and cognition. Speaking of which…
Ancient Greek sculptures also depict lifting feats. The weights were generally stones, but later gave way to dumbbells. The dumbbell was joined by the barbell in the later half of the 19th century. Early barbells had hollow globes that could be filled with sand or lead shot, but by the end of the century these were replaced by the plate-loading barbell commonly used today.