Tennis

摘要: The study investigated differences in the one- (SH) and two-handed (DH) backhands when hit flat, across-court (AC) down-the-line (DL), with heavy topspin DL (TDL). ability to disguise each of these hitting above strokes was also assessed. Eighteen college-level male tennis players, identified as having a high performance SH (n = 6) or DH 12) backhand drive, participated study. Players were required three AC, TDL from baseline their preferred technique, while being filmed two high-speed video cameras operating at 200 Hz. highest horizontal velocity for stroke analysed. Results indicated that sequential coordination five body segments (hips, shoulder, upper arm, forearm, hand/racquet rotations) execution stroke. same number generally coordinated shoulders, varying degrees arm forearm rotations followed by movement). Mature players produced comparable racquet velocities 0.005 s prior impact using either technique. characterised more rotated shoulder alignment than (SH: 119.1 degrees; DH: 83.4 degrees) completion backswing. At ball impacted further front 0.59 m: 0.40 m) similar distance side 0.75 0.70 m). technique delayed acceleration towards 0.13 s: 0.08 impact) thus capable displaying motion closer