scholarly journals The Effect of Difference of Weight Training Set Pattern on Isokinetic Lower Limb Joint Muscular Function in The Modern Dancers.

2012 ◽  
Vol null (28) ◽  
pp. 111-125
Author(s):  
오경모
Keyword(s):  
Lower Limb ◽  
Weight Training ◽  
Training Set ◽  
Muscular Function ◽  
Modern Dancers

Lower Limb POWER Training to Enhance Locomotor and Muscular Function Poststroke

2017 ◽  
Vol 49 (5S) ◽  
pp. 839
Author(s):  
Jennifer L. Hunnicutt ◽  
Stacey E. Aaron ◽  
Aaron E. Embry ◽  
Chris M. Gregory
Keyword(s):  
Lower Limb ◽  
Power Training ◽  
Muscular Function

The Effect of the Adjustment of Bicycle Seat-height on Muscular Function of the Lower Limb Joints

2010 ◽  
Vol 41 ◽  
pp. 883-892
Author(s):  
Yo Han Kim ◽  
Woon Yong Lee ◽  
Dae Taek Lee
Keyword(s):  
Lower Limb ◽  
Seat Height ◽  
Muscular Function

scholarly journals The Impact of Load Style Variation on Gait Recognition Based on sEMG Images Using a Convolutional Neural Network

Sensors ◽  
2021 ◽  
Vol 21 (24) ◽  
pp. 8365
Author(s):  
Xianfu Zhang ◽  
Yuping Hu ◽  
Ruimin Luo ◽  
Chao Li ◽  
Zhichuan Tang
Keyword(s):  
Neural Network ◽  
Control System ◽  
Convolutional Neural Network ◽  
Real Time ◽  
Lower Limb ◽  
Gait Recognition ◽  
Training Set ◽  
Lower Limb Exoskeleton ◽  
The Impact ◽  
Semg Signals

Surface electromyogram (sEMG) signals are widely employed as a neural control source for lower-limb exoskeletons, in which gait recognition based on sEMG is particularly important. Many scholars have taken measures to improve the accuracy of gait recognition, but several real-time limitations affect its applicability, of which variation in the load styles is obvious. The purposes of this study are to (1) investigate the impact of different load styles on gait recognition; (2) study whether good gait recognition performance can be obtained when a convolutional neural network (CNN) is used to deal with the sEMG image from sparse multichannel sEMG (SMC-sEMG); and (3) explore whether the control system of the lower-limb exoskeleton trained by sEMG from part of the load styles still works efficiently in a real-time environment where multiload styles are required. In addition, we discuss an effective method to improve gait recognition at the levels of the load styles. In our experiment, fifteen able-bodied male graduate students with load (20% of body weight) and using three load styles (SBP = backpack, SCS = cross shoulder, SSS = straight shoulder) were asked to walk uniformly on a treadmill. Each subject performed 50 continuous gait cycles under three speeds (V3 = 3 km/h, V5 = 5 km/h, and V7 = 7 km/h). A CNN was employed to deal with sEMG images from sEMG signals for gait recognition, and back propagation neural networks (BPNNs) and support vector machines (SVMs) were used for comparison by dealing with the same sEMG signal. The results indicated that (1) different load styles had remarkable impact on the gait recognition at three speeds under three load styles (p < 0.001); (2) the performance of gait recognition from the CNN was better than that from the SVM and BPNN at each speed (84.83%, 81.63%, and 83.76% at V3; 93.40%, 88.48%, and 92.36% at V5; and 90.1%, 86.32%, and 85.42% at V7, respectively); and (3) when all the data from three load styles were pooled as testing sets at each speed, more load styles were included in the training set, better performance was obtained, and the statistical analysis suggested that the kinds of load styles included in training set had a significant effect on gait recognition (p = 0.002), from which it can be concluded that the control system of a lower-limb exoskeleton trained by sEMG using only some load styles is not sufficient in a real-time environment.

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