A Guide to Barbells
Broadly speaking there are two types of barbells you can buy...
As the name suggests these cannot be adjusted hence you need buy more than one if you need different weights. They are only really applicable to gyms because of the cost and space involved. Experienced weight lifters rarely use fixed weight bars.
Used in gyms and the home these require you to add and remove plates to adjust the resistance. The obvious advantages for the home gym are savings in cost and space. Adjustable types also tend to be the choice of more experienced lifters because weight can be increased and decreased in smaller increments.
More specifically speaking, different types have been designed for different muscle groups and exercises. Below is a description of the most common...
Just a straight, plain bar about 5 feet long and 14lbs in weight.
Designed to take up to 350lbs and around 7 feet long and weighs about 30lbs.
Used to isolate the biceps during curls.
Used to isolate the triceps during a french press.