Contraction of this type of skeletal muscle, categorized as muscles, increases the angle between their attached bones.

The type of skeletal muscle contraction that increases the angle between the attached bones is known as "extensor contraction." Extensor muscles are responsible for straightening joints; when they contract, they pull the bones away from each other, resulting in an increased angle between them. This action is opposed to flexor muscles, which decrease the angle between bones at a joint.

In human anatomy, common examples of extensor muscles include the triceps brachii, which extends the elbow joint, and the quadriceps femoris, which extends the knee joint. Understanding the specific roles of these muscles is crucial in fields such as physiotherapy and sports science, as targeting the appropriate muscle groups can enhance performance and recovery.