A5074502487- Muscle activation and electromyography studies
- Transcranial Magnetic Stimulation Studies
- Heart Rate Variability and Autonomic Control
- Vestibular and auditory disorders
- Ion channel regulation and function
- Neuroscience of respiration and sleep
- Sports Performance and Training
- Sports injuries and prevention
Nantes Université
2023-2025
Eccentric exercise training is believed to induce an increase in muscle fascicle length. However, the mechanisms underlying this adaptation are not fully understood. This study aimed determine if gastrocnemius medialis length following 8-week eccentric linked changes tissue and joint mechanical properties. Thirty-three physically active young adults were assigned one of two protocols targeting plantar flexors: at 1) long-muscle or 2) short-muscle Fascicle shear modulus assessed using...
Original results are that in response to passive muscle lengthening and increased length, inhibition of the effectiveness activated Ia afferents discharge α-motoneurons increases, with primary afferent depolarization homosynaptic postactivation depression mechanisms playing central roles this regulatory process. Our findings highlight for first time a cumulative inhibitory effect length on α-motoneurons.
ABSTRACT It is well documented that, in soleus, motoneuron output and the effectiveness of activated Ia afferents to discharge α-motoneurons both decrease during eccentric contractions. Evidence suggests that these regulations can be explained by (1) recurrent inhibition (2) greater post-activation depression primary afferent depolarization. However, influence muscle length on regulation observed contractions remains unclear. We conducted a study 16 healthy young individuals. used simple...