Table 3 Distribution of responders (RS) and non-responders (NRS) across performance metrics.

From: Acute effects of rapid versus sustained isometric contraction durations on countermovement jump performance in national level young male soccer players

Variable

CTRL

RAPID

SUST

Jump height [cm]

RS

1

RS

1

RS

3

NRS

14

NRS

14

NRS

12

Peak power [W/kg]

RS

5

RS

0

RS

1

NRS

10

NRS

15

NRS

14

RSImod

RS

7

RS

3

RS

7

NRS

8

NRS

12

NRS

8

Contraction time [ms]

RS

4

RS

4

RS

3

NRS

11

NRS

11

NRS

12

Countermovement depth [cm]

RS

7

RS

2

RS

7

NRS

8

NRS

13

NRS

8

  1. CTRL—control condition (without ICA); RAPID – isometric muscle action condition with 1 s per 9 repetitions; SUST– sustained of isometric muscle action condition with 3 s per 3 repetitions.
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