a kinematic analysis 0 the front set and bac set in volleyball

TABLE 2JOINT RANGE OF ~lOTIONSUMMARYJoint Front Seta Rank Back Set RankHead 2 8 24 5Trunk 11 7 21 7.';houlder 62 I 83 I1':1 bow 59 2 51 2Wrist 13 6 13 8Hip 27 5 29 4K01';' 37 3 41 3Ankl~ 31 4 23 6Ball KinematicsBMean range values in degrees.Ball kinematic data are included in Table 3. The total time of ballcontact was slightly longer in the BS than in the FS. In studying theabsorption and propulsion phases it may be noted that more time was spentin the propulsion phase than in the absorption phase. Time for ballpropulsion was slightly longer for the BS (BS-P=.061s) than for the FS(fS-P=.49s). Both kinds of sets resulted in similar projection velocities(FS-8.96 m/s; BS-9.09 m/s). Projection angles differed as expected whenconsidering the difference in set destination. A mean projection angleof 62.01 deg for the FS and 108.73 deg for the BS resulted. Distance ofthe center of the ball to the forehead at contact was 33.77 cm (FS) and34.47 cm.'Ji\BLE JBALL KINU1ATICSVARIABLE SET klSOAbsorpti.onTime (scc)FS .024 2.26E-05BS .025 5.00E- 03PropulsionTime (sec)FS .049 9.45E- 03BS .061 .01Total time (sec)FS .072 .01BS .086 .01Release Velocity(m/s)FS 8.96 2.18BS 9.09 I. 79Angle of Projection(d g)FS 62.01 5.04IlS 108.7J 9.07Distance of Ballto Forehead (cm)FS 33.77 4.38BS 34 .47 6 .59243