Version 1.10 Page 134 of 203
5.1.2 JUMP AND REACTION TEST
TCont. [s]: Contact times
TFlight [s]: Flight times
Height [cm or in]: Height of jumps calculated with the following formula
Power [W/kg]: Expressed power calculated with the following formula
𝑃 = 𝑔
2
∙ 𝑇
𝑓
∙
(𝑇
𝑓
+ 𝑇
𝑐
)
4 ∙ 𝑇
𝑐
g=gravity acceleration, T
f
= Flight Time, T
c
= Contact Time
Rhythm [p/sec]: Rhythm expressed in jumps (or steps) per second
RSI[m/s]: Reactive Strength Index, defined as Height (in m) / Contact T.
Jumping Point [cm]: This is the distance between the beginning of the bar (drum) and
the middle support point. In the case of jumps with both feet perpendicular to the bars,
it will show where the center of gravity is.
Jumping Point Gap [cm]: Distance between the current Jumping Point and the previous,
i.e. how much the centroid is displaced with respect to the previous jump. A value = 0
indicates the perfect repeatability of a jump (useful mainly for one-leg jumps), negative
values indicate a displacement towards the drum (to the left for example), positive
values indicate displacements in the opposite direction (to the right in this figure); in
jumps with feet parallel to the bars indicate forward/back displacements.
Used area[cm]: Difference in cm between the first and the last activated LED; indicates
how much the legs are apart.
Figure 104 -Jumping Point Example (C), Jumping Point Gap (D), and Used Area (A)
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