Final answer:
Strains refer to the tearing of muscle fibers or tendons, commonly resulting from overstretching. Symptoms include pain and stiffness, and treatment involves rest, cold compresses, and stretching. Strains are distinct from sprains, which affect ligaments, not muscles.
Step-by-step explanation:
When we talk about strains, we are typically referring to the tearing of muscle fibers or tendons. A strain, also known as a pulled or torn muscle, occurs when muscle fibers rip due to excessive stretching. This can result in symptoms like pain, stiffness, bruising, and limited mobility. For instance, if a sprinter does not adequately warm up before a race, they are at risk of experiencing a hamstring muscle strain, one of the more common injuries in track and field sports. While strains primarily affect muscles, it's important not to confuse them with sprains, which instead impact ligaments.
Proper treatment for strains generally includes rest, applying cold compresses, and engaging in custom stretching exercises often designed by a physical therapist. Understanding how muscle tissue responds to injury and implementing appropriate measures is vital for repair and recovery, especially for athletes who have sustained previous injuries and may therefore be at a higher risk of recurring issues.