RT Journal Article T1 Free-Throw Accuracy Relates to Muscle Symmetry Activation of Masseter and Temporalis Muscles in Amateur Female Basketball Players A1 Delgado Delgado, Raquel A1 Conde Vázquez, Orlando A1 Aguilera Rubio, Ángela A1 Benito de Pedro, Ana Isabel A1 Jiménez Herranz, Maura A1 Jiménez Herranz, María Elena A1 Benito de Pedro, María AB The symmetry of masticatory muscles activation may influence postural control and, consequently, sports performance. In basketball, where shooting accuracy is crucial, masticatory muscles symmetrical contraction remains unexplored despite its potential impact on performance. This cross-sectional study was conducted to evaluate whether symmetrical activation of the masseter and temporalis muscles impacts free-throw accuracy in non-elite female basketball players. The study included 25 players who performed 18 free-throws in each of three randomized mandibular positions: mandibular rest, maximum intercuspation, and interdental cotton rolls. Electromyographic activity of the masticatory muscles was recorded before the trials and during each free-throw. We observed that symmetrical (SYM) activation performance of the temporalis muscle in maximum voluntary contraction (MVC) negatively correlated with free-throw accuracy in the resting mandibular position (r(23) = −0.442, p = 0.027, r2 = 0.195). In maximum intercuspation, SYMactivation correlated with accuracy (r(23) = 0.582, p = 0.002, r2 = 0.339). Participants with higher SYM activation values (≥ 80%) performed better (t(23) = −2.79, p = 0.010, g = −1.08). Thus, masticatory muscle symmetry relates to free-throw accuracy. Higher masseter SYM values in maximum intercuspation lead to better performance. Intraoral devices may help enhance masticatory SYM activation, potentially improving basketball free-throw performance. PB Termedia YR 2026 FD 2026-03-16 LK https://hdl.handle.net/20.500.14352/134127 UL https://hdl.handle.net/20.500.14352/134127 LA eng NO Delgado Delgado, Raquel, et al. «Free-Throw Accuracy Relates to Muscle Symmetry Activation of Masseter and Temporalis Muscles in Amateur Female Basketball Players». Journal of Human Kinetics, marzo de 2026. DOI.org (Crossref), https://doi.org/10.5114/jhk/207026 NO Online first DS Docta Complutense RD 10 abr 2026