<p>(A) Pooled spectral distributions of force intermittency profile during static and dynamic force-tracking, (B) population means of mean frequency and spectral dispersion for force intermittency profiles (Post-hoc test: <sup>***</sup>: Dynamic > Static, <i>P</i><.001).</p
1<p>Values were presented as mean ± se.</p>2<p>Post-hoc for pre-fatigue vs. post-fatigue (<sup>***</...
<p>Representative force-time-series showing a typical perturbation profile. The criterion for the pe...
Body position: knees 15° flexed. Orange columns = peak force Fpeak during walking. Green/blue column...
<p>(A) Pooled spectral profiles of un-rectified and rectified EMG, (B) The means and standard errors...
1<p>Values were presented as mean ± se.</p>2<p>Post-hoc for static force-tracking vs. dynamic force-...
<p>(A) Feature extraction of force intermittency profile and primary movements from force outputs of...
<p>(A) Sample entropy (SampEn) versus time scales, (B) Multi-scale entropy area (MSE area) for the l...
<p>Spectral profiles of force pulse trace for two typical subjects are shown in the left plots. Fati...
<p>(a) Temporal features of force fluctuations, including RMS and sample entropy (SampEn). (b) Spect...
Force intermittency is one of the major causes of motor variability. Focusing on the dynamics of for...
<p>The most probable unbinding forces f* (large points) were determined from the fit of <a href="htt...
Force intermittency is one of the major causes of motor variability. Focusing on the dynamics of for...
<p>A: Mean force, standard deviation, signal-to-noise ratio, and SampEn as a function of force level...
<p>Measured force data were highly repeatable. (A) Example raw and filtered lateral force (<i>F</i><...
<p>For plot A, mean force values were subtracted from the force signals and force data were low pass...
1<p>Values were presented as mean ± se.</p>2<p>Post-hoc for pre-fatigue vs. post-fatigue (<sup>***</...
<p>Representative force-time-series showing a typical perturbation profile. The criterion for the pe...
Body position: knees 15° flexed. Orange columns = peak force Fpeak during walking. Green/blue column...
<p>(A) Pooled spectral profiles of un-rectified and rectified EMG, (B) The means and standard errors...
1<p>Values were presented as mean ± se.</p>2<p>Post-hoc for static force-tracking vs. dynamic force-...
<p>(A) Feature extraction of force intermittency profile and primary movements from force outputs of...
<p>(A) Sample entropy (SampEn) versus time scales, (B) Multi-scale entropy area (MSE area) for the l...
<p>Spectral profiles of force pulse trace for two typical subjects are shown in the left plots. Fati...
<p>(a) Temporal features of force fluctuations, including RMS and sample entropy (SampEn). (b) Spect...
Force intermittency is one of the major causes of motor variability. Focusing on the dynamics of for...
<p>The most probable unbinding forces f* (large points) were determined from the fit of <a href="htt...
Force intermittency is one of the major causes of motor variability. Focusing on the dynamics of for...
<p>A: Mean force, standard deviation, signal-to-noise ratio, and SampEn as a function of force level...
<p>Measured force data were highly repeatable. (A) Example raw and filtered lateral force (<i>F</i><...
<p>For plot A, mean force values were subtracted from the force signals and force data were low pass...
1<p>Values were presented as mean ± se.</p>2<p>Post-hoc for pre-fatigue vs. post-fatigue (<sup>***</...
<p>Representative force-time-series showing a typical perturbation profile. The criterion for the pe...
Body position: knees 15° flexed. Orange columns = peak force Fpeak during walking. Green/blue column...