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. 2018 Nov 20;3(4):56. doi: 10.3390/jfmk3040056

Figure 2.

Figure 2

(A) Mean and standard deviation of the endurance index for the hamstrings muscle at three frequencies (2 Hz, 4 Hz, and 6 Hz) for each leg. (B) Mean and standard deviation of the endurance index of the quadriceps muscle at three frequencies (2 Hz, 4 Hz, and 6 Hz) for each leg. * represents significant difference (p < 0.05).