title: Instructions emphasizing velocity, accuracy, or both in performance and kinematics of overarm throwing by experienced team handball players.
abstract: On motor tasks like the overarm throw, velocity and accuracy are two important parameters of performance that may be incompatible and require different strategies in the execution of the motor task. The purpose was to investigate the effects of instruction (emphasizing velocity, accuracy, or both) on performance and kinematics of overarm throwing. Results for 9 experienced male team handball players (M age = 24 +/- 2.2 yr.) showed type of instruction affected the maximal ball velocity. The difference in ball velocity reflected the significant difference in maximal linear velocity of the wrist, elbow, and hip segments together with their absolute timing before ball release. The subjects did not seem to change their throwing technique, i.e., the relative timing of movement initiation of the different body segments.
authors.affiliation: Department for Physical Education, Faculty of Teacher Training, Sogn and Fjordane University College, Sogndal, Norway. rolandv@svt.ntnu.no
authors.forename: Roland
authors.initials: R
authors.lastname: van den Tillaar
authors.forename: Gertjan
authors.initials: G
authors.lastname: Ettema
mesh_terms: D000328:Adult; D001132:Arm / Q000502:physiology*; D001696:Biomechanical Phenomena; D006801:Humans; D009068:Movement / Q000502:physiology*; D011597:Psychomotor Performance; D013177:Sports; D013663:Teaching / Q000379:methods*; D014743:Videotape Recording