Do you use exercise rubberbands for bicep curls?

hashman · 10-18-2009, 07:28 PM

Hey guys, I've seen several videos where lifters are using some kind of rubberbands with weight attached to it, plus the normal weight on a barbell. What is the exact benefit of doing this? Also, I can't find these exercise rubberbands anywhere online. I wanted to try it. Thanks...

**Built** · 10-18-2009, 07:36 PM

Elite Fitness Systems

Lots of information there on how to use bands.

**CowPimp** · 10-20-2009, 01:38 PM

It's called accommodating resistance. Basically, bands have the potential to linearize, to some extent, the force curve for a given lift.

Bicep curls make for an easy example. At the bottom of the lift your arms are straight. The force of gravity on the object you are moving is acting directly downward, but it goes through the axis of rotation (Elbow). The equation to calculate torque is force*distance. In this case, distance from the line of action of the force and the axis of rotation is 0. Therefore, there is no torque required to move the weight that first instant. As you move throughout the range of motion the weight gets further away from the axis of rotation. Once your elbow is at 90 degrees, the lever arm distance is as big as it can possibly get for this particular movement. It then begins to shrink again until you flex your elbow as far as it can go.

So, although the weight never changes, the amount of torque necessary to move it changes constantly throughout the lift. Therefore, the amount of tension you have to generate is also constantly changing. It starts at 0, gradually increases to the max required when the elbow is at 90 degrees, and then decreases until the elbow is fully flexed. A band makes it so that although the lever arm distance shrinks past 90 degrees, the amount of force goes up (The force in the force*distance equation) in an effort to somewhat equalize the necessary muscle tension throughout the remaining range of motion.

In addition to the site Built provided, try www.ironwoody.com for a distributor of this product.

10-18-2009, 07:28 PM	#1
hashman Registered User Join Date: Sep 2009 Location: MD Posts: 8	Do you use exercise rubberbands for bicep curls? Hey guys, I've seen several videos where lifters are using some kind of rubberbands with weight attached to it, plus the normal weight on a barbell. What is the exact benefit of doing this? Also, I can't find these exercise rubberbands anywhere online. I wanted to try it. Thanks...

10-18-2009, 07:36 PM	#2
Built Bioidentical Bodybuilder Super Moderator Join Date: Mar 2008 Location: . Posts: 6,113	Elite Fitness Systems Lots of information there on how to use bands. Wondering where to start? Confused? This will get you started. Daredevils are Shredded Find out why... (Now you can find out why... in Hebrew!) UD2.Built - My UD2.0 setup.

10-20-2009, 01:38 PM	#3
CowPimp Fueled by Testosterone Moderator Join Date: Jan 2004 Location: Silver Spring, MD Posts: 15,615	It's called accommodating resistance. Basically, bands have the potential to linearize, to some extent, the force curve for a given lift. Bicep curls make for an easy example. At the bottom of the lift your arms are straight. The force of gravity on the object you are moving is acting directly downward, but it goes through the axis of rotation (Elbow). The equation to calculate torque is forcedistance. In this case, distance from the line of action of the force and the axis of rotation is 0. Therefore, there is no torque required to move the weight that first instant. As you move throughout the range of motion the weight gets further away from the axis of rotation. Once your elbow is at 90 degrees, the lever arm distance is as big as it can possibly get for this particular movement. It then begins to shrink again until you flex your elbow as far as it can go. So, although the weight never changes, the amount of torque necessary to move it changes constantly throughout the lift. Therefore, the amount of tension you have to generate is also constantly changing. It starts at 0, gradually increases to the max required when the elbow is at 90 degrees, and then decreases until the elbow is fully flexed. A band makes it so that although the lever arm distance shrinks past 90 degrees, the amount of force goes up (The force in the forcedistance equation) in an effort to somewhat equalize the necessary muscle tension throughout the remaining range of motion. In addition to the site Built provided, try www.ironwoody.com for a distributor of this product. The only time it's bad to feel the burn is when you're peeing... Belligerent Bovine badass YouTube Videos

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