Where Barbells Come From. (PDF) Mitchell M. & Rippetoe M. 2007 (Aug.) Flashcards
most important piece of gym equipment and why
Barbell, critical exercise more difficult to do, spin will be poor, can’t train with bent barbell, or when under load
What are the varieties and variables of a barbell
Olympic weightlifting bars are produced in
training and competition grades and are designed to comply with International Weightlifting Federation specifications regarding markings and dimensions.
Why IWF recommended
springier and more lively—“whippy” is the term usually used—than other types of bars, because of the dynamic nature of the snatch and the clean and jerk.
Powerlifting bars, again in either training or competition grade, are stiffer than weightlifting bars,?
since bar oscillation is not desirable in the squat, bench, or deadlift
Specialized thicker bars for
squats
Bars used for deadlift
Longer in some federations
The surface of the bar can be finished in a variety of ways
chrome, zinc, black oxide, or unfinished, or stainless steel can be used.
Thicknesses vary from
25mm for women’s weightlifting bars to 1 3/8 inches for squat bars, on up to 3 inches for specialized fat bars designed for grip training
common length for general-purpose bars is?
84 inches (7 feet) but they are available in lengths of 72, 60, and 48 inches for specific needs.
variety of weights,
5kg to 60 pounds, with varied knurling depth and marking options;
type of retainers
bolt, snap ring, or roller pin retainers;
sleeves barbell
with bushing or needle-bearing
bar strength is measured in at least three ways
in at least three ways: tensile strength, yield strength, and test ratings of 2000, 1800, 1500, 1200, 1000, 700, and 500 pounds.
Powerlfitng bars
. Eight-foot squat bars with larger diameter shafts are now available that deform very little under the heavy loads modern powerlifting equipment permits lifters to handle