Material use in free weights
Published: January 23, 2008, 2:07 am
Updated: January 23, 2008, 2:07 am
This article has been reviewed by the following Topic Editor:
Cutler J. Cleveland Whether you are training for Olympic weightlifting or interested in physical fitness, you have probably seen and used free weights. Barbells and dumbbells are well known free weights used for strength training.
Modeled after the athletic activity of ancient Egypt and Greece, the first worldwide competition of the modern sport of weightlifting was in London in 1891, 5 years before the first modern Olympic Games took place.
Modern barbells are made of a steel bar with rubber-coated disks of different weights, which are secured with the help of collars. Dumbbells are usually of a preset weight, but adjustable weight dumbbells are becoming more commonplace. They are usually made of cast iron or steel, although they are coated with vinyl or other materials to protect surfaces.
Iron ore, pig iron, and steel are produced in the United States. Iron ore for the most part is mined in Michigan and Minnesota. Raw steel and pig iron are mainly produced in Indiana, Ohio, Michigan, and Pennsylvania. The leading producers of iron ore in the world are Australia, Brazil, and China. The leading producers of steel and pig iron in the world are China, the European Union, Japan, and the United States.
Further Reading:
|
Disclaimer: The U.S. Geological Survey is the original source for some content in the Encyclopedia of Earth. The U.S. Geological Survey is listed as a content source on each article that uses such content. Topic editors and authors for the Encyclopedia of Earth may have edited this content or added new information. The use of information from the U.S. Geological Survey should not be construed as support for or endorsement by that organization for any new information added by Encyclopedia of Earth personnel, or for any editing of the original content.
|
Are you absolutely sure you want to delete this article? This process cannot be undone and is permanent.
Yes, Delete This Article
Are you absolutely sure you want to remove this article? This process cannot be undone and is permanent.
Yes, Remove This Article
Citation
USGS (minerals information) (Lead Author);Cutler J. Cleveland (Topic Editor) "Material use in free weights". In: Encyclopedia of Earth. Eds. Cutler J. Cleveland (Washington, D.C.: Environmental Information Coalition, National Council for Science and the Environment). [First published in the Encyclopedia of Earth January 23, 2008; Last revised Date January 23, 2008; Retrieved May 25, 2013 <http://www.eoearth.org/article/Material_use_in_free_weights>
The Author
The USGS Minerals Information Team’s mission is to collect, analyze, and disseminate information on the domestic and international supply of and demand for minerals and mineral materials essential to the U.S. economy and national security. Examples of mineral materials are cement and steel.The Team’s goal is to provide decision makers with the information required to ensure that the Nation has an adequate and dependable supply of minerals and materials to meet its defense and economi ... (Full Bio)
Whether you are training for Olympic weightlifting or interested in physical fitness, you have probably seen and used free weights. Barbells and dumbbells are well known free weights used for strength training.
Modeled after the athletic activity of ancient Egypt and Greece, the first worldwide competition of the modern sport of weightlifting was in London in 1891, 5 years before the first modern Olympic Games took place.
Modern barbells are made of a steel bar with rubber-coated disks of different weights, which are secured with the help of collars. Dumbbells are usually of a preset weight, but adjustable weight dumbbells are becoming more commonplace. They are usually made of cast iron or steel, although they are coated with vinyl or other materials to protect surfaces.
Iron ore, pig iron, and steel are produced in the United States. Iron ore for the most part is mined in Michigan and Minnesota. Raw steel and pig iron are mainly produced in Indiana, Ohio, Michigan, and Pennsylvania. The leading producers of iron ore in the world are Australia, Brazil, and China. The leading producers of steel and pig iron in the world are China, the European Union, Japan, and the United States.
Further Reading:
|
Disclaimer: The U.S. Geological Survey is the original source for some content in the Encyclopedia of Earth. The U.S. Geological Survey is listed as a content source on each article that uses such content. Topic editors and authors for the Encyclopedia of Earth may have edited this content or added new information. The use of information from the U.S. Geological Survey should not be construed as support for or endorsement by that organization for any new information added by Encyclopedia of Earth personnel, or for any editing of the original content.
|
Are you absolutely sure you want to delete this article? This process cannot be undone and is permanent.
Yes, Delete This Article
Are you absolutely sure you want to remove this article? This process cannot be undone and is permanent.
Yes, Remove This Article
Site Options
Free weights (Source: Oklahoma City University)
0 Comments
Add Comment