BACKGROUND Football players with groin injury refrain from maximal kicking. Previous groin injury is related to decreased hip range of motion (ROM). Information on ROM differences between maximal and submaximal kicking within players is lacking. The first aim of this study is to quantify ROM of body segments during the maximal (MaxK) and submaximal (SubK) instep kick at four key points. The sec...

Dynamics and Impact Control of a Flying Soccer Ball Jae Yeon Choi and Byung-Ju Yi School of Electrical Engineering and Computer Science, Hanyang University, Ansan 426-791 (Received 12 August 2008, in nal form 31 October 2008) This paper deals with the dynamics and the impact control of a soccer ball driven by a kicking robot. The trajectory of the ball is a function of its initial velocity, lau...

The fixed duration of a team-handball game and its continuously changing situations incorporate an inherent temporal pressure. Also, the target's position is not foreknown but online determined by the player's interceptive processing of visual information. These ecological limitations do not favour throwing performance, particularly in novice players, and are not reflected in previous experimen...

OBJECTIVE To investigate the risk between throwing workload and upper limb injury in elite cricketers. DESIGN Prospective cohort study. SETTING Elite Australian cricket. PARTICIPANTS 28 adult male cricketers aged 18-32 years. ASSESSMENT OF RISK FACTORS Daily throwing workload and injury were prospectively monitored over the 2007-2008 cricket season. Risk ratios (RRs) were calculated to ...

PURPOSE The main purpose of this study was to compare the effect of a specific resistance training program (throwing movement with a pulley device) with the effect of regular training (throwing with regular balls) on overarm throwing velocity under various conditions. METHODS The training forms were matched for total training load, ie, impulse generated on the ball or pulley device. Both trai...

The purpose of this study was to investigate joint kinematics of the kicking leg in Taekwondo and to examine the role of inter-joint coordination of the leg in producing the kicking velocity. A new inter-joint coordination index that encompasses three- dimensional hip and knee motions, was defined and applied to the joint kinematic results. Twelve elite Taekwondo athletes participated in this s...