Figure 1.
Representative knee angle of a patellar tendon reflex test.
Time 0 is the time the reflex hammer struck the patellar tendon. Reflex amplitude is measured as the offset of knee angle from the original position.
Figure 2.
Representative relationship between the tapping angle and the experimental maximum tapping velocity.
Table 1.
Comparison of mean values of experimental and theoretical maximum tapping velocities (±SD).
Figure 3.
Mean values of patellar tendon reflex amplitudes according to tapping angle (± standard error).
The reflex amplitude increased gradually with the increment of tapping angle. * denotes statistical significance difference compared to tapping angle of 15°. # denotes statistical significance difference compared to tapping angle of 30°. $ denotes statistical significance difference compared to tapping angle of 45°. ¤ denotes statistical significance difference compared to tapping angle of 60°. ¢ denotes statistical significance difference compared to tapping angle of 75°. ¥ denotes statistical significance difference compared to tapping angle of 90°. Symbols (¤, ¥) in bold indicates statistical significance difference at P<0.01, symbols not in bold indicates statistical significance difference at P<0.001.
Figure 4.
Reflex amplitude of random groups in mean (± standard error) according to tapping angle.