I assume by 20-30 pounds, you are talking barbell and not dumbells? If not, 20/30 pound dumbbells are pretty heavy for a woman!
There are several ways to increase bicep strength, but most important is to just go for it and not be afraid of heavier weights.
Also, if you don't use dumbbells for biceps, start adding some biceps exercises in, as they will help strengthen the weaker side (that often just "goes along for the ride" when you use a barbell), and work the muscles in a variety of ways due to the different grips you can use. Be aware that if you are not used to using dumbbells, the total weight you will be lifting will be less than the total on the barbell you use, due to necessity of your body to stabilize more than it is used to doing with a bar.
You can do drop sets, starting a set with a heavier weight than you usually use, then dropping down in weight to do a few more reps after you reach failure.
When using dumbbells, you can do forced reps and negative reps as well. Do a concentration curl with a heavyier weight than you normally use, then when you reach failure (inability to do another rep with good form), use your free hand to help the weight up, and lower it slowly using just the active arm.
Platemates, or another mean of adding a smaller amount of weight to what you are using, are a good idea. It's easier to creep up to a higher weight than to jump up to one. Ideally, you should try to add 5% of the weight you are using for smaller muscle groups like biceps, and 10% for larger muscles groups, every few workouts (at least that's what many weightlifters try for).
Another way of working on a muscle group that seems to be lagging is to prioritize your training of it, working it first (after a warm-up) in your routine. Then you can devote all your energy to it. You can also set aside one day a week to just work that muscle group.
What weight workouts do you use now? I found it was hard to increase weights in Cathe's workouts, but could do so pretty quckly with P90X.
P.S.: If you really are lifting 20# and 30# dumbbells, I'd be happy with that! Maybe you have reached your strength plateau?
__________________
Kathryn
^. .^
> ^ <
2010 season speed-walking 5K PR: 35:47
2011 season race-walking 5K PR: 34:42
|