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Length-force characteristics of in vivo human muscle reflected by supersonic shear imaging
2014
Journal of applied physiology
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From nine healthy participants, ankle joint torque and shear modulus of the tibialis anterior muscle were measured at five different ankle joint angles during tetanic contractions and during maximal voluntary ...
changes over the range of joint angles. ...
AUTHOR CONTRIBUTIONS Author contributions: K.S. and N.I. conception and design of research; K.S. and S.T. performed experiments; K.S. and S.T. analyzed data; K.S., S.T., and N.I. interpreted results of ...
doi:10.1152/japplphysiol.01058.2013
pmid:24876360
fatcat:2maidngeffbpvmzezb3c4cmhia
The effects of functional electrical stimulation on muscle tone and stiffness of stroke patients
2017
Journal of Physical Therapy Science
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The intervention was functional electrical stimulation on ankle dorsiflexor muscle (tibialis anterior). The duration of functional electrical stimulation was 30 minutes, 5 times a week for 6 weeks. ...
The changes were greater in stiffness scores than muscle tone. ...
ACKNOWLEDGEMENT This research was conducted by the research grant of Sehan University in 2017. ...
doi:10.1589/jpts.29.238
pmid:28265148
pmcid:PMC5332979
fatcat:vyefvuklureuzimluvdpoychue
Brain Regulation of Muscle Tone in Healthy and Functionally Unstable Ankles
2013
Journal of sport rehabilitation
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Active motor threshold, slope, and intensity at 50% of peak slope of TMS-derived recruitment curves were used to quantify cortical excitability from lower leg muscles, while the cortical silent period ...
CON demonstrated a significant relationship between laxity and tibialis anterior excitability, as well as laxity and silent period, while UNS ankles demonstrated significant relationships between peroneal ...
loss of cortical regulation of joint stiffness through the tibialis anterior. ...
doi:10.1123/jsr.22.3.202
pmid:23579401
fatcat:burl6mxbwbeg3esbe454elfpbi
Effect of Peripheral Afferent Alteration of the Lateral Ankle Ligaments on Dynamic Stability
2003
American Journal of Sports Medicine
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Results: The protective response of the anterior tibialis and peroneal muscles during inversion perturbation and mean muscle activation amplitude decreased during running after both injections. ...
The sensorimotor influence of the lateral ankle ligaments in muscle activation is unclear. Hypothesis: The lateral ankle ligaments have significant sensorimotor influence on muscle activation. ...
During running trials, the mean amplitude of peroneal muscles decreased during the stance phase of running and the anterior tibialis muscle mean amplitude was depressed during the swing phase (Fig. 6) ...
doi:10.1177/03635465030310040401
pmid:12860535
fatcat:bpfaveqvyzdfvhag4mae2dcdtm
Passive material properties of stroke-impaired plantarflexor and dorsiflexor muscles
2017
Clinical Biomechanics
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Additionally, muscle stiffness estimates of stroke-impaired tibialis anterior from joint torque and angle measurements were significantly greater by 23.1% (P=0.033) than the unimpaired contralateral side ...
However, no significant difference was found in the tibialis anterior between the two sides. ...
Funding for this study was provided by the National Institutes of Health. S.S.M. Lee, A. Terman, and R. ...
doi:10.1016/j.clinbiomech.2017.08.009
pmid:28866442
pmcid:PMC5681874
fatcat:f7drd7hklva6pko6so4peltsyu
Effects of a neuromuscular controller on a powered ankle exoskeleton during human walking
2016
2016 6th IEEE International Conference on Biomedical Robotics and Biomechatronics (BioRob)
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Reductions in tibialis anterior and soleus activity were observed, suggesting the controller could be suitable, in future work, for augmenting or replacing normal walking functions. ...
mass of the device only, and allow for walking at different speeds without explicit control. ...
The SYMBITRON project is coordinated by University of Twente. The authors thank Annerieke Nijman and Gijs van Oort of University of Twente for their help in conducting this study. ...
doi:10.1109/biorob.2016.7523694
dblp:conf/biorob/DzeladiniWRABAK16
fatcat:vayo3tyyzfhzxnfo3jfud4bcmm
Plyometric Training Favors Optimizing Muscle–Tendon Behavior during Depth Jumping
2017
Frontiers in Physiology
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Before and after the period, we observed reaction forces at foot, muscle-tendon behavior of the gastrocnemius, and electromyographic activities of the triceps surae and tibialis anterior during DJ. ...
Subjects in the training group performed depth jumps (DJ) using only the ankle joint for 12 weeks. ...
Muscle-Tendon Behavior during DJ EMG Activities during DJ Figure 5 shows mEMGs of the triceps surae and tibialis anterior during DJ for the training group. ...
doi:10.3389/fphys.2017.00016
pmid:28179885
pmcid:PMC5263151
fatcat:f52a5hw6vbhglepdgmdcxt3xli
Kinematic, kinetic and EMG patterns during downward squatting
2008
Journal of Electromyography & Kinesiology
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In the upright position there were small changes in the COP and in the knee and ankle joint torques. The tibialis anterior provoked the disruption of this upright position initiating the squat. ...
During the acceleration phase of the squat the COP moved posteriorly, the knee joint torque remained in flexion and there was no measurable muscle activation. ...
We also thank Mukul Mukherjee for review of the manuscript. ...
doi:10.1016/j.jelekin.2006.07.010
pmid:17029862
fatcat:yakzard3svatfnadievt2oecbu
Postural activity of constrained subject in response to disturbance in sagittal plane
2000
Gait & Posture
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This caused a nonlinear scaling of ankle responses, thereby increasing variability of ankle stiffness. Distinctions in the ankle responses were also observed for different initial standing postures. ...
This study examines the postural activity of partially constrained subjects for three different initial standing postures in response to disturbances in the sagittal plane. ...
In this way, postural coordination changes in order to minimize muscle activation during different biomechanical conditions [9] . ...
doi:10.1016/s0966-6362(00)00065-5
pmid:10998605
fatcat:yvmkep4zjndg5nvisztg76aim4
Measurement of impaired muscle function of the gastrocnemius, soleus, and tibialis anterior muscles in spastic hemiplegia: a preliminary study
1998
Journal of rehabilitation research and development
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Surface EMGs of tibialis anterior, gastrocnemius, and soleus muscle are recorded during active (FFRM) and passive (TAD) ankle movements. ...
, e.g., spasticity, and deficit symptoms, e.g., paresis); changes in muscle stiffness; and changes in muscle length. ...
The ankle dynamometer with surface EMG registration of the tibialis anterior, soleus, and gastrocnemius muscles. ...
pmid:9704315
fatcat:bri2nekdozdr7pfydrwyasxxza
Examining Ankle-Joint Laxity Using 2 Knee Positions and With Simulated Muscle Guarding
2016
Journal of athletic training
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The ankle dorsiflexors, including the tibialis anterior, are primarily active in muscle guarding of the ankle joint to prevent stressing the ATFL in plantar flexion. ...
Specific Aim 2: To quantify the difference in ankle laxity measurement during 30% MVC of the tibialis anterior compared to no contraction. ...
doi:10.4085/1062-6050-51.3.06
pmid:26881870
pmcid:PMC4852316
fatcat:rnb2mudgazehrlnyc7olfxypci
30 Achilles Tendinopathy Alters Stretch Shortening Cycle Behaviour During A Sub-maximal Hopping Task: Abstract 30 Table 1
2014
British Journal of Sports Medicine
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A delay in muscle activity was also observed; soleus onset (p<.001), tibialis anterior peak (p=0.026) and tibialis anterior offset (p<.001) were all delayed in AT compared with CON. ...
Patients with AT hop with greater lower limb stiffness, in a greater degree of ankle dorsiflexion and have a greater stretch amplitude. Likewise, delayed muscle activity is evident. ...
The authors would like to thank Paul Davey and Dr Tiffany Grisbrook (Curtin University), Prue Butler and Professor Max Bulsara (University of Notre Dame Australia) for their assistance with data collection ...
doi:10.1136/bjsports-2014-094114.30
fatcat:aotxslbufzf7van4po54hwa2km
Achilles tendinopathy alters stretch shortening cycle behaviour during a sub-maximal hopping task
2016
Journal of Science and Medicine in Sport
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A delay in muscle activity was also observed; soleus onset (p<.001), tibialis anterior peak (p=0.026) and tibialis anterior offset (p<.001) were all delayed in AT compared with CON. ...
Patients with AT hop with greater lower limb stiffness, in a greater degree of ankle dorsiflexion and have a greater stretch amplitude. Likewise, delayed muscle activity is evident. ...
The authors would like to thank Paul Davey and Dr Tiffany Grisbrook (Curtin University), Prue Butler and Professor Max Bulsara (University of Notre Dame Australia) for their assistance with data collection ...
doi:10.1016/j.jsams.2014.11.391
pmid:25496733
fatcat:psmjurz3p5a25mnjmfce7r7taa
Changes in the muscle reaction time of ankle periarticular muscles by balance training
2013
The Journal of Physical Fitness and Sports Medicine
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Muscle reaction times during ankle varus simulation with Trapdoor were measured. The main effect was seen between the peroneus muscle group and anterior tibialis muscle in the Con and NTr groups. ...
However, the absence of a significant difference between the peroneus muscle group and anterior tibialis muscle in the FI group after balance training indicates that the muscle chain reaction did not recover ...
Furthermore, there is a possibility that FI subjects attempted to increase joint stiffness due to the cocontraction of the peroneal muscle group and the anterior tibialis muscle. ...
doi:10.7600/jpfsm.2.493
fatcat:ecxz7o223ngyvee54kqqxv5tue
Caution needed when interpreting muscle activity patterns during extremely low pedaling cadence
2020
Journal of Sport and Health Science
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aspects of the pedaling motion, including altered crank torque patterns within the crank cycle, decreased pelvis stability, and the need for increased knee and ankle stiffness during the upstroke. ...
Load and cadence interactions were observed for the offset of BF, the active duration of RF, and the peak magnitudes of VL and the tibialis anterior. ...
within the crank cycle, decreased pelvis stability, and the need for increased knee and ankle stiffness during the upstroke. ...
doi:10.1016/j.jshs.2020.06.001
pmid:32504810
pmcid:PMC7856555
fatcat:bxtytrsolzcpvdovkd7mf55qba
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