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. 2015 May 13;6:145. doi: 10.3389/fphys.2015.00145

Table 2.

Peak twitch torques, evoked potentials, maximum and explosive voluntary strength, normalized muscle activity (RMS-EMG/Mmax) during iMVC and the initial phase of contraction for the intervention (INT) and control group (CON) at baseline.

Parameter Pre
INT CON Diff.
PEAK TWITCH TORQUE (N·m)
Supramaximal single 13.1 ± 2.5 14.9 ± 1.7 −1.8
Supramaximal doublet 25.4 ± 5.1 26.7 ± 2.5 −1.3
H-reflex intensity 10.1 ± 2.3 10.9 ± 1.9 −0.8
EVOKED POTENTIALS
Hmax SOL (mV) 3.68 ± 1.96 2.70 ± 0.92 0.98
Mmax SOL (mV) 6.50 ± 2.23 5.00 ± 1.60 1.50
Hmax/Mmax SOL 0.58 ± 0.19 0.57 ± 0.20 0.01
MHmax/Mmax SOL 0.16 ± 0.13 0.17 ± 0.14 −0.01
Hsup SOL (mV) 3.92 ± 1.83 3.24 ± 1.43 0.68
Msup SOL (mV) 6.50 ± 1.94 5.98 ± 1.87 0.52
Hsup/Msup SOL 0.62 ± 0.12 0.52 ± 0.20 0.10
MHsup/Msup SOL 0.20 ± 0.10 0.17 ± 0.05 0.03
V-wave SOL (mV) 2.42 ± 1.07 2.15 ± 0.78 0.27
V/Msup SOL 0.38 ± 0.13 0.38 ± 0.14 0.00
Mmax MG (mV) 4.39 ± 1.97 5.01 ± 2.06 −0.62
Mmax LG (mV) 5.83 ± 1.96 6.84 ± 2.34 −1.01
Mmax TA (mV) 4.45 ± 1.54 4.28 ± 1.03 0.17
Isometric maximum voluntary torque (N·m) 93.2 ± 19.9 102.0 ± 16.2 −8.8
RMS-EMGiMVT/Mmax
TS 0.038 ± 0.009 0.043 ± 0.007 −0.005
TA 0.022 ± 0.017 0.021 ± 0.009 0.001
RATE OF TORQUE DEVELOPMENT (N·m·s−1)
0–100 ms 273.0 ± 71.6 293.9 ± 76.8 −20.9
100–200 ms 328.0 ± 64.9 355.8 ± 77.2 −27.8
RMS-EMGRTD/Mmax
TS 0–100 ms 0.043 ± 0.015 0.044 ± 0.010 −0.001
TS 100–200 ms 0.047 ± 0.016 0.045 ± 0.008 0.002
TA 0–100 ms 0.021 ± 0.013 0.019 ± 0.007 0.002
TA 100–200 ms 0.026 ± 0.020 0.021 ± 0.010 0.005

Diff., difference between means; Hmax, maximal H-reflex; Mmax, maximal M-wave; MHmax, submaximal M-wave evoked at Hmax intensity; Hsup, H-reflex during iMVC; Msup, maximal M-wave during iMVC; MHsup, submaximal M-wave evoked at Hsup intensity during iMVC; SOL, soleus; MG, medial gastrocnemius; LG, lateral gastrocnemius; TS, triceps surae; TA, tibialis anterior. Data are means ± standard deviations.