Kinematic comparison between single and double-leg jump landings in sagittal plane for male hand ball players

Authors : Mariam A. AMEER

Pages : 108-115

View : 12 | Download : 4

Publication Date : 2016-12-31

Article Type : Other Papers

Abstract :Double and single leg jump insert ignore into journalissuearticles values(SL); landing activities are considered stressful tasks for handball players. Most of the previous researches focused on kinetic analysis of these activities rather than kinematic analysis. Also, there is a lack of comparative studies that were performed between the two types of activities. The main aim of this study is to perform lower extremity kinematic analysis to find the kinematic differences between si ngle and double-leg jump insert ignore into journalissuearticles values(DL); landings in the sagittal plane insert ignore into journalissuearticles values(SP);,in male handball players. The lower extremity kinematics were measured in 15elite male handball playersinsert ignore into journalissuearticles values(while performing SL and DL landings);, by using three-dimensional motion analysis system insert ignore into journalissuearticles values(VICON);. The results revealed statistically significant difference between the lower limb kinematics of SP SL and SP DL . During the SP DL, the hip and knee flexion angles increased more than those in SP SL , while there was more knee adduction with internal rotation stress in SP SL than in SP DL insert ignore into journalissuearticles values( P < .05);. The hip and knee flexion angles in the SP DL showed moderate association with those during the SP SL insert ignore into journalissuearticles values( R 2 , 0.49 and 0.44 respectively);. In addition, the hip abduction in the SP DL showed moderate association with those during the SP SL insert ignore into journalissuearticles values( R 2 , 0.37);. But, hip internal rotation, knee adduction, and knee internal rotation in the SP DL showed weak association with those during the SP SL insert ignore into journalissuearticles values(R 2 = 0.02-0.041; P ˃ .05);. The double-leg jump landing maybe considered as a less stressful task for the lower limb joints than the single-leg jump landing activity. As a clinical benefit, the double-leg jump landing activity may be used to screen the ACL injury risk in certain planes of joint motion.
Keywords : Handball players, high risk movements, leg jump landing