From: Lower trunk kinematics and muscle activity during different types of tennis serves
Serve type | Flat | Top-spin | Slice | |||
---|---|---|---|---|---|---|
Motion* | AV | AI | AV | AI | AV | AI |
Extension# | 19.3 (11.9) | 27.5 (10.9) | 19.3 (10.6) | 31.9 (17.2) | 20.0 (10.1) | 26.9 (7.6) |
Left lateral Flexion# | 16.0 (4.1) | 12.3 (5.2) | 15.5 (5.4) | 10.9 (4.8) | 15.4 (5.3) | 12.4 (8.4) |
Left Twisting | 7.9 (4.3) | 6.8 (3.8) | 6.8 (4.1) | 5.4 (0.96 | 5.5 (3.8) | 4.3 (3.1) |
Right Twisting | 5.6 (4.6) | 4.2 (1.8) | 6.1 (6.9) | 4.1 (0.6) | 11.2 (12.7) | 4.1 (3.1) |