A strain can be categorized by severity, Grade 1-3 (mild, moderate, severe). A grade 1 strain occurs when some of the muscle fibers are torn in a small capacity. A grade 2 strain involves more of the muscle fibers being torn to a greater extent. Last, a grade 3 occurs when the fibers are fully torn across the muscle belly. In all 3 cases, the effects that ensue include tenderness to the touch, swelling, decreased range of motion, loss of strength, compensated gait, decreased ability to participate in any functional/recreational activity, and decreased stability. Muscle pain can also present as tendinitis because the tendon is directly correlated to the muscle. Tendinitis occurs when the tendon is performing the workload the muscle is designed to perform.
Muscle pain can also be caused by using muscle. During a workout, the muscles are being stressed under load which causes micro-tearing in the muscles which is normal. As a result, delayed onset muscle soreness (DOMS) occurs which is also normal as long as it occurs within a 48-hour period.
In most cases, stretching is required to elongate the muscle fibers that are too tight and to help with muscle soreness as a result of workload. Manual interventions such as soft tissue mobilization, manual stretching, dry needling, cupping, and any other manual treatments are involved in releasing accumulated tension through the muscle and tendons. The other mode of treatment involves corrective/strengthening exercises to ensure the muscles are supporting the body. These treatments are of the utmost importance when restoring mobility, stability, and strength.