fa International Journal of Kinesiology & Sports Science ISSN 2202-946X Vol. 4 No. 1; January 2016 Australian International Academic Centre, Australia Effect of Kinetic Resistance Training and Technique on Special Strength Level and Effective Kinematic Variables in Instep Kick for Soccer Juniors Amr Ali Shady Sport Training Department, Faculty of Sport Education, Mansoura University, Mansoura, Egypt E-mail: dr_ashady2004@yahoo.com Received: 11-11- 2015 Accepted: 19-12- 2015 Published: 31-01- 2016 doi:10.7575/aiac.ijkss.v.4n.1p.33 URL: http://dx.doi.org/10.7575/aiac.ijkss.v.4n.1p.33 Abstract Background: Training with resistance is considered the essential and complementary part of players' preparation period during training season through developing different aspects. Objective: This study aims to investigate the Effect of Kinetic resistance training and technique on special power level and effective kinematic variables in instep kick for soccer juniors. Methodology: 20 junior soccer players (age: 17.54 ±0.5 years, body mass: 69.05 kg, height: 170 cm, training age=7.7 years( participated in this study were randomly assigned into two groups experimental (n=10( trained with kinetic resistance training program and technique and control (n=10( trained with traditional soccer training program only where, the experimental approach was used. Results: The kinetic resistance trainings and technique positively affected the special power level, kicking accuracy and time and effective kinematic variables in instep kick. Conclusion: The researcher recommended that coaches should give attention to special strength developing and to be an essential part of the training program through kinetic resistance trainings and technique. Also coaches should depend on the kinematic variables affecting performance for detecting the improvement level in performance as a result of kinetic resistance trainings and technique. Keywords: kinetic resistance, technique, special strength, kinematic, Instep Kick 1. Introduction Soccer has been affected by the scientific development in sports and physical education to develop players' abilities and achievements through taking care of special physical preparation devoted to increasing functional efficiency of vital organs and developing physical and skillful characteristics discriminating soccer player. Training with resistance is considered the essential and complementary part of players preparation period during training season through developing different aspects. The scientific researches and studies indicated the improvement in young players physical fitness level following the resistance training programs right instruction and steps (Roberts & Weider, 1994(. Muscular strength in its different shapes including explosive strength, maximum strength and rate of force development plays a major role in enhancing such skills performance (Cabri et al., 1988(. And hence for soccer player to perform different shapes of skill performances during the game, some physical abilities should be available. Where these physical abilities type, quantity and timing differentiate based on each skill singularity and type (Keshek & Elbosaty , 2000(. The success in kinetic skill performance depends on player ability in employing physical components especially the muscular strength during skill performance. Different players have high levels of muscular strength that appears in muscular strength tests but couldn't be applied in skill performance as it requires the ability of good kinetic correlation and movement right transmission. The good co-operation of the kinetic transmission process of the exerted strength from the trunk to the thigh then leg then ankle works in an open reaction chain starting from trunk to ankle (Noguchi et, al., 2012(. The muscular strength in the upper and lower part of the body moves through a set of muscles groups participating in soccer kicking skill. Thus during the design of soccer players special strength developing training programs especially juniors, central muscles strength working in physical activity should be developed and the exercises should be similar to the performance nature not only the shape but also the speed of each part of the body and in the same muscular working direction(Schmitz,2003(. Through this study the researcher defined the Kinetic Resistance as a resistance based on rubber bands (as shown in Figure 1( where the player exerts muscular contractions with shape and kinetic path similar to the soccer kinetic performances type. The instep kick is one of the most needed skills in soccer, constituting a basic element of the game when a faster and more powerful ball needs to be generated (Inoue et.al., 2012(. So the existence of information about the needed characteristics through different skills performance became an essential for coaches where the technological Flourishing Creativity & Literacy