Causes: Strain:
A strain is caused by twisting or pulling a muscle or
tendon. Strains can be acute or chronic. An acute strain is caused by
trauma or an injury such as a blow to the body; it can also be caused by
improperly lifting heavy objects or overstressing the muscles. Chronic
strains are usually the result of overuse--prolonged, repetitive
movement of the muscles and tendons. (Source: excerpt from Questions and Answers Sprains and Strains: NIAMS)
The following conditions are listed as possible triggers for Strain:
As with all medical conditions, there may be many causal factors. Further relevant information on causes of Strain may be found in:
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Sprains and strains may result from accidental injury, various sports-related injuries, or from simple household or work-related tasks. More than 4 of 10 injuries resulting in time absent from work are due to sprains and strains, mostly affecting the back.
Source: Professional Guide to Diseases (Eighth Edition), 2005
Sprains occur when there is trauma to the joint, causing the joint to move in a position it wasn’t intended to move. Strains may be caused by excessive physical effort or activity, improper warming up before an activity, or poor flexibility.
Source: Handbook of Diseases, 2003
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