| Term | Definition |
| Agonist | Muscle directly responsible for the movement |
| Antagonist | Muscle acts in opposition to the agonist, often lengthening to do so |
| Isometric Contraction | Muscle contracts but there is no movement, muscle stays the same length |
| Isotonic Contraction | Involves movement of the muscle contracting |
| Concentric Contraction | Muscle contracts isotonically by shortening |
| Eccentric Contraction | Muscle contracts isotonically by lengthening |
| Biceps Brachii | Upper arm muscle that causes elbow flexion |
| Triceps Brachii | Upper arm muscle that causes elbow extension |
| Iliopsoas | Anterior muscle that causes hip flexion |
| Adductors | Muscles that cause adduction |
| Abductors | Muscles that cause abduction |
| Gastrocnemius | Calf muscle that causes plantaflexion e.g. jumping |
| Tibialis Anterior | Shin muscle that causes dorsiflexion e.g bringing toes towards the shin |
| Quadriceps | Anterior thigh muscle that causes extension at the knee |
| Hamstrings | Posterior thigh muscle that causes knee flexion |
| Gluteus Maximus | Posterior muscle that causes hip extension |
| Deltoid | Shoulder muscle that causes shoulder abduction |
| Anterior Deltoid | Front part of shoulder muscle that causes shoulder flexion and horizontal adduction |
| Posterior Deltoid | Rear part of shoulder muscle that causes shoulder extension and horizntal abduction |
| Pectoralis Major | Chest muscle that causes shoulder flexion, adduction and horizontal adduction |
| Latissimus Dorsi | Back muscle that causes shoulder extension, adduction, horizontal abduction and horizontal abduction |