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. 2020 Dec 3;15(12):e0243090. doi: 10.1371/journal.pone.0243090

Table 2. The minimum number of consecutive averaged repetitions to meet the trustworthy criteria (ICC2.k > 0.95).

Load (kg·m2) EMGRMS Concentric Eccentric
sol l.gas bf semi vm vl rf glut sol l.gas bf semi vm vl rf glut
0.05 Peak 3 4 7 2 6 7 3 14 12 6 7 3 11 8 2 19
Mean 2 2 2 2 3 5 3 16 4 4 2 2 2 2 2 7
1./3mean 13 9 2 10 6 8 4 16 9 9 9 2 8 4 9 6
2./3mean 10 4 11 5 8 8 7 17 17 8 13 7 7 4 3 22
3./3mean 6 6 9 5 11 13 5 12 25 13 2 13 2 8 25 20
0.125 Peak 8 9 8 3 4 5 2 2 6 11 7 3 2 6 4 3
Mean 7 2 2 3 4 5 4 2 3 7 3 3 2 3 4 2
1./3mean 7 8 3 3 5 7 4 2 6 14 3 4 4 2 25 2
2./3mean 12 9 2 2 8 10 4 2 15 19 3 7 4 4 8 7
3./3mean 11 11 2 5 6 6 5 4 9 12 17 5 3 6 4 22
0.225 Peak 7 5 4 6 3 4 3 2 4 4 4 9 7 3 5 2
Mean 5 2 2 5 2 3 3 2 4 4 3 3 4 3 8 2
1./3mean 12 5 3 5 5 6 4 2 3 14 3 3 18 22 24 9
2./3mean 11 6 2 2 4 7 6 2 8 7 7 2 9 17 12 12
3./3mean 7 5 2 9 2 3 3 2 11 7 9 3 4 4 7 2

Note: Load, Flywheel load; sol, m. soleus; l.gas, m. gastrochnemius lateralis; bf, m. biceps femoris; semi, m. semimembranosus; vm, m. vastus medialis; vl, m. vastus lateralis; rf, m. ractus femoris; glut; m. gluteus maximus; EMGRMS, root-mean-square of the EMG signal, ICC2.k, Two-way random, average measures, absolute agreement Intra-class correlation coefficient model; concentric, propulsive part of the squat; eccentric, braking part of the squat; 1./3mean, 2./3mean, 3./3mean, mean EMG activity in the first (1./3mean), second (2./3mean) and third (3./3mean) part of vertical displacement length during the squat derived from the position-time data.