Table 2 Change in jump height and relative peak power between time points and conditions.

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

 

Baseline (Jump Height and Peak Power)

3 min (Jump Height and Peak Power)

6 min (Jump Height and Peak Power)

9 min (Jump Height and Peak Power)

12 min (Jump Height and Peak Power)

CTRL

36.1 ± 4.2 cm, 50.2 ± 5.7 [W/kg]

36 ± 4.7 cm, 50.2 ± 5 [W/kg]

35.4 ± 4.5 cm, 49.8 ± 4.7 [W/kg]

35.8 ± 4.9 cm, 49.7 ± 5.1 [W/kg]

36.1 ± 4.7 cm, 50.6 ± 5.6 [W/kg]

RAPID

37.3 ± 6.5 cm, 52 ± 5.7 [W/kg]

36.5 ± 5.3 cm, 51.1 ± 4.1 [W/kg]

35.3 ± 5 cm, 49.4 ± 4.3 [W/kg]#

35.8 ± 6.7 cm, 50.1 ± 5.2 [W/kg]

33.6 ± 5 cm*, 48.8 ± 4.8 [W/kg]#

SUST

36.4 ± 6.2 cm, 50.2 ± 5.6 [W/kg]

35.9 ± 5.4 cm, 50.3 ± 5.5 [W/kg]

36.6 ± 6 cm, 49.9 ± 5.3 [W/kg]

35.9 ± 6.5 cm, 49.2 ± 5 [W/kg]

35.5 ± 5.7 cm, 49.1 ± 4.7 [W/kg]

  1. CTRL—control condition (without ICA); RAPID – isometric muscle action condition with 1 s per 9 repetitions; SUST – isometric muscle action condition with 3 s per 3 repetitions; 3 min – 3rd-minute post-ICA, 6 min – 6th-minute post-ICA, 9 min – 9th-minute post-ICA, 12 min – 12th-minute post-ICA, * — significant difference compared to baseline value and the 3rd-minute post-ICA within the same condition p < 0.05; # — significant difference compared to baseline value within the same condition p < 0.05.
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