When a runner uses her leg muscles to run which of the three typesof muscle is she using?

When a runner uses her leg muscles to run, she is primarily using skeletal muscles. Skeletal muscles are under voluntary control and are responsible for movement by contracting and relaxing. These muscles work in coordination to provide the strength and agility needed for running. In addition to skeletal muscles, some smooth muscles may be involved in regulating blood flow and digestion during exercise.