Which of the following describes a grade 1 muscle strain?

A grade 1 muscle strain is characterized by a partial tearing of muscle fibers; however, it is important to note that despite this injury, the muscle's functionality remains largely intact. Individuals typically experience some discomfort or tenderness, but they are still capable of achieving a full range of motion. This distinguishes it from more severe grades of strains, such as grade 2 or grade 3, where partial or complete ruptures lead to significant loss of function and reduced range of motion due to swelling or severe pain. Thus, recognizing that a grade 1 strain allows for functional movement is crucial in understanding its impact on athletic performance and rehabilitation.