This study aimed to quantify rectus femoris muscle-tendon unit length and excitation during different types of rugby kick. Seven male rugby players completed a series of kicks during which kinematic and muscle excitation data were collected. Between 0.2 and 0.1 s prior to ball contact in all kick types, the rectus femoris lengthened rapidly whilst muscle excitation also rapidly increased, identifying eccentric action as a possible mechanism for muscle strain injury. Peak rectus femoris muscle excitations occurred later in the kicks with a primary height demand, and differences in the timing of peak muscle excitation existed between different regions of the rectus femoris muscle. This study provides information which can be used to inform the specificity of physical preparation and rehabilitation protocols for rugby kickers.
Bezodis, Neil E.; Lazarczuk, Stephanie; Mendiguchia, Jurdan; and Love, Thomas
"RECTUS FEMORIS MECHANICS IN RUGBY KICKING,"
ISBS Proceedings Archive: Vol. 36
, Article 191.
Available at: https://commons.nmu.edu/isbs/vol36/iss1/191