Journal of Sports Science and Physical Education 5(2): 9-14, 2016 - Jump squat tests can be used to investigate the differences in the force - velocity (f-v) profile in movement that is more a sport-specific than isolated exercises such as open chain leg extension. However, squat jumps involve multi-joint movement, making it questionable which muscle is the main contributor for the movement. The main aim of this study is to develop a test of isolated knee extension that encompasses the entire range of human f-v relationship and to investigate the correlation between linear encoder and kinematic measurement of angular velocity using a camera system during unloaded kicking. One healthy male subject volunteered to participate in the study and performed 10 unloaded kicks (knee extension). A cuff was strapped around the lower leg, approximately 2 cm above the medial malleoli and connected to a linear velocity encoder (MuscleLab Ergotest version 4010, Norway). During the test sessions, three.....

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Substantial research compared between specializing and diversifying in a particular sport but few scrutinised across multiple sports. This study examined the developmental pathways taken by individual sport (IS) and team sport (TS) athletes from two Malaysian national sports schools. Student athletes (N=117) aged 16 and above completed the Participation History Questionnaire. Information pertaining to the participant’s main sport and other sports he/she was engaged in was obtained. In comparison with TS athletes,the IS athletes were found to have a significant later start for most of their sport-relatedmilestones (p < 0.05). However, the IS athletes (M = 14.3 y, SD = 1.7) started competing ininternational competitions significantly earlier than the TS athletes (M = 15.3 y, SD = 1.1; p = 0.004, d = -0.72) and only the IS athletes reported competing in the Commonwealth, World and Olympic championships. Interestingly, the IS athletes (M = 2.5 sports, SD = 1.3) participated in significan.....

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