Scapulohumeral rhythm in young tennis players

42ème congrès de la Société de Biomécanique, REIMS, FRANCE, 02-/11/2017 - 03/11/2017; Intensive tennis practice, with its unilateral solicitation, leads to sport-specific adaptations particularly in shoulder range of motion and muscular strength at the dominant shoulder (Gillet et al., 2017). However, excessive or imbalance changes are known to increase the risk of shoulder injuries (Chorley et al., 2017). Shoulder injuries can be evaluated and prevented by monitoring the scapulohumeral rhythm (SHR). The SHR assess the contribution of the humerus and the scapula during the arm elevation. Commonly, a 2:1 ratio is observed and its alterations are related to shoulder injuries (Hosseinimehr et al., 2015). However, asymptomatic overhead adult athlete presents a lower SHR ratio in the dominant side compared with the nondominant one (Hosseinimehr et al., 2015). To our knowledge, the SHR in young competitive tennis players has not been characterized yet. A better description of the SHR in such a population may help to improve the shoulder injury prevention. This study aimed to describe the SHR of young competitive tennis players. We hypothesized that the SHR in the dominant side should be lower than the nondominant one.