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- W798973206 abstract "A 3D subject-specific computer simulation model of a ball-racket system linked to anupper-limb and torso was developed to investigate factors which may result in adverseloading at the elbow during one-handed backhand groundstrokes. Rigid hand,forearm, upper-arm and torso segments were driven by joint angle time historiesobtained from backhand performances. Wobbling mass segments were incorporatedto represent soft tissue motion. The upper-limb model was attached to a forwarddynamics model of the racket-ball system using spring-dampers at the thenar andhypothenar eminences of the hand. The racket frame was represented using two rigidbodies with two torsional spring-dampers to allow motion in and out of the racketplane. The stringbed was represented by nine point masses connected using elasticsprings. A point mass representation of the tennis ball allowed normal and obliqueimpacts at the nine locations on the stringbed. Inertia parameters for the elite tennisplayer and the rackets and visco-elastic parameters for the rackets and ball weredetermined from independent experimental tests. Visco-elastic parameters for thehand and wobbling masses were determined within the matching process of sixbackhand trials. Excellent agreement between performance and matching simulationswas obtained with a mean RMS difference of 1.3% based on racket kinematics,outbound ball velocity and time of ball contact. Simulation results suggest that theinertia and stiffness parameters of the racket frame and the stringbed tension have arelatively small influence on elbow loading within current design ranges. In contrast,the off-centre ball impact simulations resulted in an 11% increase in peak internalelbow joint force, a 22% increase in peak pronation-supination net torque and a 19%increase in peak elbow-flexion extension net torque around the elbow joint. Thisresearch suggests that racket frame vibration is an unlikely mechanism for tenniselbow and that an accumulation of peak loads from off-centre hits is a more likelycause." @default.
- W798973206 created "2016-06-24" @default.
- W798973206 creator A5031891063 @default.
- W798973206 date "2007-01-01" @default.
- W798973206 modified "2023-09-24" @default.
- W798973206 title "An investigation of elbow loading in one-handed tennis backhand groundstrokes using computer simulation" @default.
- W798973206 hasPublicationYear "2007" @default.
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