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. 2012 Sep 7;20:29. doi: 10.1186/2045-709X-20-29

Figure 1.

Figure 1

Participant position and experimental apparatus.A) Custom-built pneumatic device that delivered the patellar tendon taps. B) Mercury switch mounted to the tapper. C) Microswitch mounted behind the participant’s heel. D) Surface electromyography sensor.