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. 2021 Jun 14;3:646369. doi: 10.3389/fspor.2021.646369

Table 2.

Changes in measured local muscle variables before and after a 2-weeks ischemic preconditioning intervention.

Pre Post P-value Power (β) Effect size (d) 95% confidence interval
Quadriceps femoris CSA, cm2 71.9 ± 10.3 71.6 ± 11.9 0.730 0.05 −0.02 −0.90, 0.86
Knee extensor MVC, Nm 241.7 ± 48.0 247.6 ± 46.5 0.217 0.07 0.13 −0.75, 1.00
Knee extensor endurance test
Time to task failure, sec 220.1 ± 65.9 221.1 ± 66.1 0.923 0.05 0.02 −0.86, 0.89
Mean torque output, Nm 46.8 ± 9.2 48.5 ± 9.1 0.139 0.08 0.18 −0.69, 1.06
Peak EMG of VL,% of MVC 33.2 ± 9.6 35.4 ± 14.3 0.642 0.08 0.18 −0.69, 1.06
Peak EMG of VM,% of MVC 29.7 ± 15.5 31.8 ± 10.9 0.623 0.07 0.16 −0.72, 1.03
Peak EMG of RF,% of MVC 25.2 ± 12.5 24.6 ± 6.3 0.857 0.05 −0.05 −0.93, 0.82

Values are presented as mean ± standard deviation. CSA, cross-sectional area; MVC, maximum voluntary contraction; EMG, electromyography; VL, vastus lateralis; VM, vastus medialis; RF, rectus femoris.