On the Psychology of Lifting Weights Edward W. L. Smith ... Barbells, too, can have permanently affixed collars, thereby creating a safer piece of equipment, while having the advantage of a rotating ... Many gyms have racks of such barbells in progressive weights. More and more, though, the best gyms provide Olympic or power bars with a large assortment of various sized plates and heavy duty collars.
|Title||:||Not Just Pumping Iron|
|Author||:||Edward W. L. Smith|
|Publisher||:||Charles C Thomas Pub Limited - 1989-01-01|