The gain in muscle weight is the same whether you are simultaneously losing fat or not. There is actually quite a bit of controversy regarding exactly how muscle gains take place. Water can be a factor for a number of reasons – for example, when you train your muscles they begin to hold more glycogen, which is stored carbohydrate – this enters the cell in a ratio of about 1 gram of carbohydrate to 2 – 4 grams of water, so there is substantial water involved. Creatine can also drive water into the cell.
Because this is not “water retention” i.e. water under the surface of the skin or external to the cells, but is in fact intracellular water, it is not necessarily a bad thing … a volumized muscle cell (one expanded due to water content) may actually create an environment that caters to muscle growth and can provide more leverage which translates to strength.
You will gain strength and not necessarily muscle as well. This is because your muscles are made of motor units. These are bundles of muscle cells that are triggered by a single nerve, so they can either completely contract or not at all – there is no partial contraction. So lifting a heavier weight is simply a function of “recruiting” or causing more motor units to contract at once. Your muscle never utilizes all motor units and never coordinates them 100% efficiently. Therefore, as you train, your central nervous system (CNS) can become more effective at coordinating and recruiting these existing motor units, which means you can gain strength without necessarily gaining size.
Diffusion is the process of particles (particularly cells) moving from one area of lesser concentration to an area of higher concentration. A good example of diffusion would be dropping a drop of blood into water, the effect would result with the water all turning a reddish color and therefore the blood cells moved to an area of lesser concentration until equilibrium was reached. Another good ...
Size often DOES come as the result of training, especially for someone who just begins. There is definitely an increased volume of muscle fibers – in other words, they increase in cross-section which creates overall size and improves the amount of leverage and force that the muscle can generate. So while strength and muscle aren’t directly correlated, there IS a relationship. There is also a predominant belief that you have what are known as satellite cells – essentially muscle fibers that don’t serve a specific function, but when you invoke the appropriate training, can fuse and turn into more force-generating muscle cells (there are various types of muscle fibers, and some can handle low force output but high volume, i.e. endurance, while others can generate massive force but are easily damaged and therefore won’t last long).
The controversial aspect which is still being debated is whether (a) muscle fibers can split and then grow, and (b) whether entirely new fibers can be grown. Some believe you actually increase your count of muscle fibers, while others believe the only change in fibers is due to the fusion of satellite cells and beyond that, you simply increase the cross-sectional diameter of your muscle fibers.
Fat loss is a completely different mechanism and not related to muscle growth. In fact, under normal conditions, your body is either in an anabolic/growth state or catabolic/loss state and this cycles over a 24-hour period. The goal is of course to take the catabolic state and have that loss come from fat cells, then make sure the anabolic phase does not replenish fat stores but in fact synthesizes muscle tissue for a net gain of muscle and loss of fat. Most find it practical to simply lose fat and then gain muscle in cycles, or they may zig-zag calories over days or weeks to create a net gain/loss over time.
Abstract There are several types of stem cells being used in stem cell research and therapy today. They are embryonic, adult and induced pluripotent stem cells. Each will be discussed further. This topic has stirred much moral, ethical and political debate as whether cells from fetuses should be used in this research. This impacts governmental policies on laws and funding. Another issue that must ...
Also remember that you never, ever lose a fat cell. While gaining weight rapidly can result in producing NEW fat cells, you never lose a single fat cell short of some invasive procedure like liposuction. Fat cells are simply sacks or bags. When they are “full” they contain a droplet of oil, when you “burn fat” that droplet is released and utilized for energy, so the sack “deflates.”
While this may result in excess material for some people who were obese or gained quite a bit of weight in their adolescence, there is a common myth that is a psychological crutch for people dropping weight that they have “loose skin.” Skin, even with depleted fat calls combined with it, is only 1/8″ of an inch stick. Therefore, when you pinch a fold of skin, it would be less than a quarter inch or several millimeters thick. Any thickness beyond that is due to inflated subcutaneous (beneath the skin) fat cells. Therefore, most people who claim “loose skin” and pinch a huge fold of skin that is thick, haven’t really got a problem with loose skin – they still have fat to lose!
You have three types of fat – fat in the muscle/marbled fat, fat around your organs/visceral fat, and fat beneath the skin/subcutaneous fat. The fat beneath the skin is what most people target because it is the saddlebags, love handles, etc and it also obscures the view to the muscle underneath.
Science has demonstrated time and time again that depleting your calories helps lose mainly VISCERAL fat, while exercising (whether weight training or cardio) results in a net loss of subcutaneous fat. Therefore, someone who simply diets without exercising may become smaller and still have flab because of this – it is important to do a combination of cutting back on calories consumed AND increasing energy expenditure (exercise) to account for losing all forms of fat.