A Pilot Study to Examine the Activity of Primary Plantar Flexor Muscles using an Electric Motorized Treadmill in Comparison to Overground Walking

2017 ◽  
Author(s):  
Katja Orlowski ◽  
Dennis Wagner ◽  
Annett l'Orteye ◽  
Heike Ringk ◽  
Verena Kohl ◽  
...  
Keyword(s):  
Pilot Study ◽  
Plantar Flexor ◽  
Overground Walking ◽  
Flexor Muscles ◽  
Plantar Flexor Muscles

Twitch contraction properties of plantar flexor muscles in pre- and post-pubertal boys and men

2000 ◽  
Vol 82 (5-6) ◽  
pp. 459-464 ◽  
Author(s):  
Mati Pääsuke ◽  
Jaan Ereline ◽  
Helena Gapeyeva
Keyword(s):  
Plantar Flexor ◽  
Twitch Contraction ◽  
Flexor Muscles ◽  
Pubertal Boys ◽  
Plantar Flexor Muscles

scholarly journals Ultrasound-derived changes in thickness of human ankle plantar flexor muscles during walking and running are not homogeneous along the muscle mid-belly region

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
E. F. Hodson-Tole ◽  
A. K. M. Lai
Keyword(s):  
Statistical Parametric Mapping ◽  
Muscle Thickness ◽  
Ultrasound Images ◽  
Plantar Flexor ◽  
Image Region ◽  
Thickness Change ◽  
Musculoskeletal Models ◽  
Flexor Muscles ◽  
Anatomical Space ◽  
Plantar Flexor Muscles

Abstract Skeletal muscle thickness is a valuable indicator of several aspects of a muscle’s functional capabilities. We used computational analysis of ultrasound images, recorded from 10 humans walking and running at a range of speeds (0.7–5.0 m s−1), to quantify interactions in thickness change between three ankle plantar flexor muscles (soleus, medial and lateral gastrocnemius) and quantify thickness changes at multiple muscle sites within each image. Statistical analysis of thickness change as a function of stride cycle (1d statistical parametric mapping) revealed significant differences between soleus and both gastrocnemii across the whole stride cycle as they bulged within the shared anatomical space. Within each muscle, changes in thickness differed between measurement sites but not locomotor condition. For some of the stride, thickness measures taken from the distal-mid image region represented the mean muscle thickness, which may therefore be a reliable region for these measures. Assumptions that muscle thickness is constant during a task, often made in musculoskeletal models, do not hold for the muscles and locomotor conditions studied here and researchers should not assume that a single thickness measure, from one point of the stride cycle or a static image, represents muscle thickness during dynamic movements.

Characterization of torque generating properties of ankle plantar flexor muscles in ambulant adults with cerebral palsy

2019 ◽  
Vol 119 (5) ◽  
pp. 1127-1136 ◽  
Author(s):  
Rasmus Feld Frisk ◽  
Jakob Lorentzen ◽  
Lee Barber ◽  
Jens Bo Nielsen
Keyword(s):  
Cerebral Palsy ◽  
Plantar Flexor ◽  
Flexor Muscles ◽  
Plantar Flexor Muscles

Chronic effects of muscle and nerve-directed stretching on tissue mechanics

2020 ◽  
Vol 129 (5) ◽  
pp. 1011-1023 ◽  
Author(s):  
Ricardo J. Andrade ◽  
Sandro R. Freitas ◽  
François Hug ◽  
Guillaume Le Sant ◽  
Lilian Lacourpaille ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Sciatic Nerve ◽  
Peripheral Nerves ◽  
Tissue Mechanics ◽  
Plantar Flexor ◽  
Chronic Effects ◽  
Flexor Muscles ◽  
Plantar Flexor Muscles

This study demonstrates that the mechanical properties of plantar flexor muscles and sciatic nerve can adapt mechanically to long-term stretching programs. Although interventions targeting muscular or nonmuscular structures are both effective at increasing maximal range of motion, the changes in tissue mechanical properties (stiffness) are specific to the structure being preferentially stretched by each program. We provide the first in vivo evidence that stiffness of peripheral nerves adapts to long-term loading stimuli using appropriate nerve-directed stretching.

scholarly journals Cortical motor output decreases after neuromuscular fatigue induced by electrical stimulation of the plantar flexor muscles

2015 ◽  
Vol 214 (1) ◽  
pp. 124-134 ◽  
Author(s):  
F. Alexandre ◽  
G. Derosiere ◽  
M. Papaiordanidou ◽  
M. Billot ◽  
A. Varray
Keyword(s):  
Electrical Stimulation ◽  
Neuromuscular Fatigue ◽  
Motor Output ◽  
Plantar Flexor ◽  
Cortical Motor ◽  
Flexor Muscles ◽  
Plantar Flexor Muscles ◽  
Stimulation Of
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