Continued from page 1
Let us now sidestep over to
weight room where
dumbbells are kept, and once again get in
start position for a standing bicep curl with
dumbbells. Notice
term "standing". You know, like you DIDN'T do all day at work, and hopefully also did not do in your car on
way to
gym. So before we even start
exercise, we are using more muscles than we did on
machine - namely
leg muscles.
Now let's pick up a 10 lb dumbbell in each hand. We've just added 20 lbs to our body weight. What is keeping us from losing our center of balance and falling clean over? The abdominal muscles and
muscles of
lower back and spine. Now we are using our legs, our abs, and our back. Flex those elbows and start to raise
dumbbells. Now our center of gravity has become a fluid state, and our legs, back, and abs all have to constantly compensate to maintain posture. Oh, and
biceps are also in on
action by this point, as are
forearms,
fingers, and
shoulder girdle.
We now have
dumbbells all
way up and it's time to start lowering them again, via an eccentric contraction of
biceps (also know as extending
elbow). What muscle group controls
extension of
elbow? The triceps on
back of
arm.
Did you lose track yet? It's okay if you did because you have illustrated
point:
Machine Bicep Curl: Uses
biceps, forearms, and fingers Cost: Thousands of dollars
Standing Dumbbell Bicep Curl: Uses
biceps, forearms, fingers, legs, abs, back, triceps, and shoulders. Cost: $40 for a good set of dumbbells that can be used for dozens of other exercises
In a nutshell, free weight exercises simply USE MORE MUSCLES than machines do, which make them more effective. Does that mean that
machines are a complete waste? Absolutely not! In some circumstances it is BETTER to stabilize
muscles being used in any given movement. However, those circumstances are
exception, rather than
rule.
So what do you do? Change up your routine, and incorporate free weights as well as machine exercises. However, keep
machine work to a minimum - say 20% of your total time spent working with weights. Spend
other 80% developing your stabilizer muscles, your sense of balance and coordination, and if nothing else - just standing up!
After all, you can go home and sit down on
couch to enjoy your post-workout snack. The bicep machine already brought
kids home from soccer practice, remember?

Aaron Potts is the owner and creator of Fitness Destinations. Aaron's experience in the health and fitness industry includes one on one personal training in many different environments, maintenance of several health-related websites, and authoring of many fitness-related products for consumers and fitness professionals. http://www.fitnessdestinations.com