Rugby Union as a sport has seen continual evolution over the years, and never more so than since the game officially became professional in 1995. While on the pitch tactics have seen more formalized approaches to skill acquisition, it is off the pitch where the biggest changes have occurred and no area has developed more than strength and conditioning. Players have gone from traditionally training for ''fitness'' as an add-on to their rugby training to seeking out structured athletic training interventions. Furthermore, with modern rugby players being physically bigger and faster, the need to ensure that they are more robust and free from injury has led to the demand for a more scientific approach to the prescription of strength and conditioning. In Strength and Conditioning for Rugby Union, ex-international player Joel Brannigan presents the underpinning science of strength and conditioning in rugby. Using the fundamental principles of training, he details a structure of assessing rugby players that in turn will allow appropriate training inverventions to be planned out and, most importantly, coached to a wide range of rugby playing levels.