Shoulder Kinematics and Symmetry at Different Load Intensities during Bench Press Exercise
Metadatos
Mostrar el registro completo del ítemEditorial
MDPI
Materia
Acceleration Biomechanics Full ROM Shoulder Velocity
Fecha
2021Referencia bibliográfica
Franco-García, J.M.; Rodal, M.; Gutiérrez-Horrillo, R.; Carlos-Vivas, J.; Pérez-Gómez, J.; Nobari, H.; Ardigò, L.P.; Gianikellis, K. Shoulder Kinematics and Symmetry at Different Load Intensities during Bench Press Exercise. Symmetry 2021, 13, 1859. https://doi.org/10.3390/sym13101859
Resumen
This study aimed to analyze between-shoulder kinematics symmetry at different load
intensities considering full range of movement (ROM), mean and maximum velocities (VMEAN,
VMAX), and accelerations (AMEAN, AMAX) of shoulders during phases 2 (characterized by positive
acceleration and negative velocity, eccentric) and 3 (characterized by positive acceleration and
velocity, concentric) of bench press exercise (BP); as well as to compare unilateral kinematics variables
between the different load intensity intervals. Twenty-seven participants were evaluated during
phases 2 and 3 of BP at different load intervals: interval 1 (55–75% 1-repetition maximum: 1RM),
interval 2 (75–85% 1RM) and interval 3 (85–100% 1RM). Kinematics variables were determined
using the Xsens MVN Link System. Results showed that full ROM was higher in left than right
shoulder at all intensities (p = 0.008–0.035). VMEAN, VMAX, AMEAN, and AMAX were different
in both shoulders for interval 3 during phase 2 and were lower as load intensity increased in
both shoulders (p = 0.001–0.029). During phase 3, only VMAX on interval 2 was different between
shoulders. Moreover, VMEAN, VMAX, AMEAN, and AMAX were greater during interval 1 compared
with the others in both shoulders (p = 0.001–0.029). Therefore, there exists a kinematics asymmetry
between both shoulders during phases 2 and 3 of bench press, although the acceleration was similar
during both phases at all load intensities. Moreover, kinematic parameters differ between loads of
55–75% RM compared to 75–100% RM loads.