Originally posted by: ja1484
Originally posted by: TheNinja
Originally posted by: ja1484
Originally posted by: TheNinja
Originally posted by: purbeast0
to build muscle you need a calorie excess.
to lose fat you need a calorie defecit.
I do not totally agree with that. If you are just starting out lifting you can lose fat and gain muscle at the same time. Granted it takes a little longer but it is easily possible for a newbie.
I don't care if you agree with it or not, the physiological science on this is crystal clear: When you have an energy (caloric) deficit, your body goes into catabolic processes, and in order to go into anabolic processes, you MUST have a caloric excess.
People who are unfit and begin a weight training regimen appear to gain muscle primarily because bodyfat being lost is no longer concealing definition.
Well I don't know the science behind it but I can guarentee you that people are able to build muscle and burn fat at the same time...especially people new to lifting. I have witnessed it first hand and even can do it myself. So you can try and come in with a cut and dried answer but then explain how I was able to get stronger and look bigger while losing weight in my gut?
I *do* know the science behind it, and I can assure you things are not what they seem initially...
The look bigger portion is already answered in my post you quoted. Less fat leads to the appearance of more definition, which gives the illusion of looking bigger. Furthermore, if it was coming off your torso, that helps even more to provide the appearance of gaining size as a smaller waist (the focal point of the body) causes the shoulder girdle to look broader and give a more muscular impression overall.
This is a very common pattern most people go through when they begin an exercise regimen. They lose a significant amount of adipose mass in their bodies due to two primary reasons:
1) Increased caloric burn from the activity itself and
2) Higher BMR. Active individuals have been shown to have a higher base metabolic rate than non-active, again resulting in greater caloric expenditure even at rest.
As for strength:
Initial strength gains (first 4- 8 weeks after beginning a strength training routine) are not from growth of muscle tissue - they are from increased neurological recruitment of existing muscle fibers. It's still heavily debated among exercise scientists whether or not the number of muscle cells actually changes at all due to training (hyperplasia) or simply get larger due to the increased demand on the tissues (hypertrophy). Evidence is starting to shift mostly to support of the latter.
So to give you a boiled-down basic answer: You were more able to see what muscle was already in place, and your body learned to better utilize it. A lot of people confuse this for building muscle and losing fat at the same time. Not entirely so.
AFTER that period, you may have started to actually gain muscle size, depending on your dietary regimen and exercise activities.
We're on the very cusp of a much much much more complicated discussion regarding metabolic pathways, fuels for different types of activity, and how the body physiologically adjusts to exercise. I'm not entirely sure I feel like typing half of an exercise physiology textbook up on an internet forum, so I will link you to an excellent text on the subject at Amazon:
Exercise Physiology: Theory and Application by Powers
And suggest you do your own research. It's easier on me that way.