THE Blue Square UK Open saw the effects of competing on the biggest stages monitored for the first time with leading players.
Many of the top players in the sport wore heart rate monitors during their matches at the Reebok Stadium.
The heart rate monitors, supplied by Cat and Mouse, gave a unique insight for Sky Sports viewers and the players themselves into how they react under pressure.
Punch Taverns qualifier Mark Hylton saw his heart rate surge beyond 160 during his win over top American Ray Carver on Thursday.
Phil Taylor also wore the heart rate monitor throughout his participation in the event on Saturday.
With a resting heart rate of 93 before going on stage, he had a peak of 147 in winning leg nine of his opening game, against Peter Manley in round four as he went 7-2 up - meaning that he was calmer when landing his nine-dart leg against Wes Newton.
Taylor had an average heart rate during his three games on Saturday of 130.