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Table 1 The parameters of interest and their calculation formulas are summarized in the table

From: The speed-gene study: methods, study design and preliminary results

 

Variables

Formulas

Outcomes

References

Angular

Relative Torque

\(RT = \displaystyle{\frac{{Segemental\,mass\,(kg)\, \times \,Angular\,accelerations\,(\deg \,{s^{ - 2}})}}{{Total\,body\,mass\,(kg)\,}}}\)

Torque and power production

Knudson [15]

Power

\(P\, = \,\operatorname{Re} lative\,Torque\,(Nm)\, \times \,Angular\,velocity\,(\deg \,{s^{ - 1}})\)

Sayers et al., [17]

Dynamic

Peak Power

\(P\, = \,\operatorname{Re} lative\,Torque\,(Nm)\, \times \,Angular\,velocity\,(\deg \,{s^{ - 1}})\)

Explosiveness, and force production

Turner et al., [18]

Rate of Force Development

\( \displaystyle{RFD\, = \,\frac{{Peak\,Force\,(N)}}{{Time\,to\,peak\,Force\,(s)}}}\)

Comfort et al., [19]

Reactive

Reactive Strength Index

\(\displaystyle{RSI\, = \,\frac{{DJ\,Height\,(m)}}{{Ground\,Count\,Time\,(s)}}}\)

Eccentric force utilization during SSC

Riggs & Sheppard, [20]

Index of Reactive Force

\(\displaystyle{I\operatorname{Re} aF\, = \,\frac{{DJ\,Height\,(m)\, - \,SJ\,Height\,(m)}}{{SJ\,Height\,(m)}}}\)

Papadopoulos et al., [14]

  1. The angular variables are quantifying hip and knee angular acceleration and velocity during jumps and sprints while the dynamic variables quantifying various force-time curve characteristics. The reactive variables demonstrate the elastic utilization when eccentric muscle contractions are followed immediately by explosive concentric contractions in vertical jumps during SSC