Steroid rankings
Substances like growth hormone and insulin may also be familiar to many people, especially if they are in tune with the bodybuilding / weight lifting culture. steroid rankings Legal steroids. What many people are not aware of is that there are several other classes of compounds that are used and abused by athletes to improve performance. Like steroids and amphetamines, these substances are for the most part banned by athletic organizations. This banning doesn't necessarily mean that some athletes do not use these substances, since the doping testing for these are not always foolproof. steroid rankings Steroid rankings. Lets examine some of these lesser-known pharmacological ergogens, including one hypothetical one that is yet to really be tried in humans:Erythropoietin (EPO)Erythropoietin (EPO) is a protein hormone secreted by the kidneys and liver that stimulates red blood cell production - a process known as erythropoiesis. Red blood cells carry oxygen to the tissues of the body and so obviously are vital to maximal health and athletic performance - especially in endurance athletes such as long distance cyclists, swimmers, and runners. Before the commercial production of EPO by recombinant DNA technology, athletes attempted to increase the red blood cell proportion of their blood -called the hematocrit - by a process known as blood doping. steroid rankings Bodybuilding photos. Blood doping involves an athlete first removing a substantial volume (a liter or so) of his or her own blood a few months prior to competition and freezing it. Shortly before competition, this whole blood or enriched red blood cells is thawed and re-infused into the athlete, resulting in an increase of hematocrit. Blood doping was obviously a very inconvenient and dangerous procedure (i. e. infection, blood clots), so the introduction of commercially available EPO basically ended the practice for good. EPO only requires that a water based injection be taken a few times a week. EPO is sold in recombinant form (rhEPO) for injection. It usually is packaged as a lyophilized (freeze dried) powder that is reconstituted with sterile water before injection. One popular form is called Epogen(r), and it is made for subcutaneous usage. A starting dosage is typically 20 i. u. per kilogram bodyweight, 3 times/week. After two to four weeks, a maintenance dose of 20 i. u. /kg BW can be taken once a week. EPO use can be very dangerous if the user allows their hematocrit to creep too high. The ideal hematocrit for athletic performance is thought to be 55 (expressed in percent). Levels above this can result in "sludging" of the blood, which reduces microcirculation. This is counterproductive to oxygen transport.
Steroid rankings
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