Strength and conditioning coaches (SCC) have strived to find exercises that transfer to aid the development of specific sports skills. These exercises come in many forms, from resistance to body weight or from more technical based Olympic style weightlifting exercises, such as the clean and jerk, with the aim being to benefit the athlete with transferable capabilities that improve the sport specific skill (Hori et al., 2008; Behm, 1985). For the coach to design an effective training plan, how an exercise dynamically corresponds with a skill helps to pick the most effective exercise for the desired response. The term dynamic correspondence can be defined as the ability to use exercises for specific sports to enhance required motor patterns (Siff
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As discussed, both the HC and VJ start with hips, knees flexed and ankles dorsi-flexed, with muscles going from an eccentric state to a concentric state very quickly to produce a rapid movement, ending up with a triple extension of those joints (Astorino et al., 2013). As these are the main joints involved in both the HC and VJ, the major muscle groups activated are the quadriceps, hamstrings, gluteal, gastrocnemius, soleus and tibialis anterior (McBride, McCaulley, & Cormie, 2008). This type of movement is a result of the SSC, which is the ability of the muscle to generate force concentrically by being stretched prior to movement (Kopper et al., 2014). The significance of the SSC during the HC and VJ in football is different due to the stationary nature of the HC and numerous variations in the jump within a football game (Jezdimirović, Joksimović, Stanković, & Bubanj, 2013). The number of steps prior to the jump will affect the take-off, therefore the longer the take-off time, the SSC becomes less important and a greater emphasis is placed on the concentric strength of the muscles in this movement (Bobbert, 2001). In summary, the HC does demonstrate dynamic correspondence towards a VJ as similar muscle recruitment patterns are achieved but the use of SSC and concentric strength of the athlete can be used to assess which area would need to be improved to aid the development of the VJ in
As discussed, both the HC and VJ start with hips, knees flexed and ankles dorsi-flexed, with muscles going from an eccentric state to a concentric state very quickly to produce a rapid movement, ending up with a triple extension of those joints (Astorino et al., 2013). As these are the main joints involved in both the HC and VJ, the major muscle groups activated are the quadriceps, hamstrings, gluteal, gastrocnemius, soleus and tibialis anterior (McBride, McCaulley, & Cormie, 2008). This type of movement is a result of the SSC, which is the ability of the muscle to generate force concentrically by being stretched prior to movement (Kopper et al., 2014). The significance of the SSC during the HC and VJ in football is different due to the stationary nature of the HC and numerous variations in the jump within a football game (Jezdimirović, Joksimović, Stanković, & Bubanj, 2013). The number of steps prior to the jump will affect the take-off, therefore the longer the take-off time, the SSC becomes less important and a greater emphasis is placed on the concentric strength of the muscles in this movement (Bobbert, 2001). In summary, the HC does demonstrate dynamic correspondence towards a VJ as similar muscle recruitment patterns are achieved but the use of SSC and concentric strength of the athlete can be used to assess which area would need to be improved to aid the development of the VJ in