Preparing to Land: Hamstring Preactivation Is Higher in Females and Is Inhibited by Fatigue
J Appl Biomech. 2023 Jul 25:1-7. doi: 10.1123/jab.2022-0287. Online ahead of print.ABSTRACTThe hamstring plays an important role in reducing loads born by the anterior cruciate ligament. As anterior cruciate ligament injuries occur rapidly after ground contact, how the hamstring is activated prior to landing can influence injury risk. The purpose was to determine sex-related differences in hamstring activation immediately before landing and the effect of fatigue on "preactivation." Twenty-four participants (13 males and 11 females, age = 24.3 [6.5] y, mass = 72.2 [19.3] kg, height = 169 [9.7] cm) participated in this study...
Source: Journal of Applied Biomechanics - July 25, 2023 Category: Sports Medicine Authors: David Alan Phillips Bridgette Rae Buckalew Bridget Keough Jacklyn Stephanie Alencewicz Source Type: research
Influence of Surface Geometry on Palm and Fist Contact Pressure Distribution During Strikes With the Hand in Automotive Assembly
This study investigates the risk of overload injuries in soft tissue structures of the hand by analyzing the pressure distribution and location of peak pressure in the hand during snap-fit connection assembly in the automotive industry. The influence of the surface geometry of automotive trim components the pressure distribution and force imparted during strikes with the palm and the fist are investigated in a cohort of 30 subjects with extensive experience installing trim parts with snap-fit connections. Using the palm or fist (ulnar hand side) of the dominant hand, the subjects struck a simulation device with a flat, rou...
Source: Journal of Applied Biomechanics - July 24, 2023 Category: Sports Medicine Authors: Lukas Hausmanninger Igor Komnik Mario Fleiter Wolfgang Potthast Source Type: research
Effects of Resistance Training of Upper Limb and Trunk Muscles on Soccer Instep Kick Kinematics
This study aimed to investigate the effect of resistance training of the arm and anterior trunk muscles on instep kicking kinematics. Twenty-six male participants were randomly allocated into a training group or control group. The training group underwent resistance training of arm and trunk muscles and practiced the instep kick for 8 weeks. The control group only practiced kicking during the same period. The trunk, hip, and knee kinematics were assessed during the instep kick before and after the intervention. Kinematics were analyzed according to their data distribution with statistical parametric or nonparametric mappin...
Source: Journal of Applied Biomechanics - July 24, 2023 Category: Sports Medicine Authors: Miguel Arcanjo de Assis Thiago Ribeiro Teles Santos Sergio Teixeira Fonseca Andr é Gustavo Pereira de Andrade Priscila Albuquerque Ara újo Thales Rezende de Souza Renan Alves Resende Juliana Melo Ocarino Source Type: research
