Well, I must admit that I'm very pleased with how things have been going, thus far. Since I started working with Brian Wiefering on nutrition and supplmementing in March, I've put on over 14 lbs. of muscle and lost over 4% bodyfat =] So, I know I'm doing something right!!

My current struggle is that it appears I'm putting on plenty of muscle in my arms, chest, and shoulders, but my lower body is lacking. I don't know why but it seems I'm struggling putting on mass there. And when I say legs I'm not referring to calves because I have huge calves, always have, but my quads don't seem to be getting as big as fast as my upper body does. Any suggestions?! I'm currently training my legs only once per week alternating one week of heavy squatting and deadlifts with another week of leg presses, hack squats, leg extensions, and leg curls.

What type of sets and rep ranges are you using?

Let's see..

Week #1
Squats
1 set of 20 repetitions
1 set of 15 repetitions
1 set of 10 repetitions
1 set of 8 repetitions
1 set of 6 repetitions
1 set of 4 repetitions

Stiff Legged Dead Lifts
1 set of 15 repetitions
1 set of 12 repetitions
1 set of 10 repetitions
1 set of 8 repetitions
1 set of 6 repetitions
1 set of 4 repetitions

Week #2
Leg Press
1 set of 20 repetitions
1 set of 15 repetitions
1 set of 12 repetitions
1 set of 10 repetitions
1 set of 8 repetitions

Hack Squat
1 set of 15 repetitions
1 set of 12 repetitions
1 set of 10 repetitions
1 set of 8 repetitions

Leg Extension
1 set of 15 repetitions
1 set of 12 repetitions
1 set of 10 repetitions
1 set of 8 repetitions

Leg Curl
1 set of 12 repetitions
1 set of 10 repetitions
1 set of 8 repetitions
1 set of 6 repetitions

Hi Maria. Now you are gonna get a mixed bag of answers on this one, but I've found that although a higher rep range with moderate weight can induce size gains in the quads/hamstrings, NOTHING beats HEAVY HEAVY HEAVY SQUATS and FRONT SQUATS for pure size and strength.

I am talking your absolute maximum weight that you can handle for SQUATS and FRONT SQUATS:
1 set of 15 reps
1 set of 15 reps
1 set of 15 reps
1 set of 4 reps
1 set of 3 reps
1 set of 2 reps

The reps range is set so that you reach absolute FAILURE at the alocated rep number. If you are supposed to do 4 reps and you can do 5-6 reps with the given weight, then you darn well better increase the poundage on that bar!!

All together, if something doesn't seem to be working, common says that you change it. Correct? Do what you want for rep ranges on everything else because they are all ancillary to the TRUE size builders: Squats and Front Squats.... ENJOY THAT PAINFUL JOURNEY!

Chunky is right nothing beats heavy squats. Make sure they are at least parallel too. Also try adding in the leg press and leg extensions on the same day, this might shock your muscles pretty good. Have fun trying to walk out of the gym lol.