Table 4. Kinetic Energy before contact and magnitude of impact (energy distributed between ball-carrier and tackler upon contact). Data reported as mean (±SD).
n Ball-carrier
Kinetic Energy
(Joules)		 Tackler
Kinetic Energy
(Joules)		 Energy
(magnitude of impact)
(Joules)
Front-on
Contact dominated by Ball-carrier 13 1417
(628)		 1519
(1077)		 2754
(1075)
Contact dominated by Tackler 17 1464
(1815)		 1911
(1395)		 3063
(1911)
Side-on
Contact dominated by Ball-carrier 27 1463
(1030)		 1389
(1055)		 2705
(1462)
Contact dominated by Tackler 3 1058
(862)		 435
(283)		 1431
(1078)