Altered reflex sensitivity after repeated and prolonged passive muscle stretching.

@article{Avela1999AlteredRS,
  title={Altered reflex sensitivity after repeated and prolonged passive muscle stretching.},
  author={Janne Avela and Heikki Kyr{\"o}l{\"a}inen and Paavo V. Komi},
  journal={Journal of applied physiology},
  year={1999},
  volume={86 4},
  pages={
          1283-91
        }
}
Experiments were carried out to test the effect of prolonged and repeated passive stretching (RPS) of the triceps surae muscle on reflex sensitivity. The results demonstrated a clear deterioration of muscle function immediately after RPS. Maximal voluntary contraction, average electromyographic activity of the gastrocnemius and soleus muscles, and zero crossing rate of the soleus muscle (recorded from 50% maximal voluntary contraction) decreased on average by 23.2, 19.9, 16.5, and 12.2… Expand
Neural and mechanical responses of the triceps surae muscle group after 1 h of repeated fast passive stretches.
TLDR
Evidence is presented that repeated and prolonged passive muscle stretching can lead to some modification of material behavior of the aponeurosis-tendon system, such as stress relaxation and/or plastic deformation, which seems to affect proprioceptive feedback and, therefore, the motor unit activation in proportion to the contractile failure. Expand
Reduced reflex sensitivity persists several days after long-lasting stretch-shortening cycle exercise.
TLDR
It is suggested that the acute reduction in reflex sensitivity is of reflex origin and due to two active mechanisms, disfacilitation and presynaptic inhibition, and the delayed second decline in the sensitivity of some reflex parameters may be attributable to the secondary injury, because of some inflammatory response to the muscle damage. Expand
Transient Increase in Cortical Excitability Following Static Stretching of Plantar Flexor Muscles
TLDR
It is confirmed that static stretching reduces muscle spindle sensitivity and suggested that post-activation depression of Ia afferents, which is commonly considered the cause of H-reflex depression during both dorsiflexion and static stretching, vanished immediately following stretching or is counteracted by an increased corticospinal excitability. Expand
Acute effect of muscle stretching on the steadiness of sustained submaximal contractions of the plantar flexor muscles.
TLDR
It is indicated that repeated stretches can decrease torque steadiness by increasing muscle compliance and EMG activity of muscles around the joint by depending on the torque level during the torque-matching task. Expand
Neuromuscular Correlates of the Contralateral Stretch-induced Strength Loss
TLDR
It is suggested that only supraspinal mechanisms might be involved in the contralateral decrease in the maximum force-generating capacity of thecontralateral muscle. Expand
The effects of muscle history on short latency stretch reflex response of soleus muscle.
  • J. Kallio, V. Linnamo, P. Komi
  • Chemistry, Medicine
  • Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology
  • 2004
TLDR
The mechanism behind the smaller amplitude in passive LEN and the lack of velocity dependence in active LEN may be related to changes in motoneuron pool excitability or changes in the spindle sensitivity to stretch. Expand
No effect of passive stretching on neuromuscular function and maximum force-generating capacity in the antagonist muscle
TLDR
No change in the force-generating capacity and neuromuscular function of the antagonist muscle after passive stretching was observed and the effectiveness of stretching protocol was observed. Expand
Prolonged passive static stretching-induced innervation zone shift in biceps brachii.
  • X. Ye, T. Beck, N. Wages
  • Medicine
  • Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme
  • 2015
TLDR
It is believed that the IZ shift was caused by the elongation of the entire muscle-tendon unit in the proximal direction, and caution should be taken when using surface EMG technique to examine possible changes in the EMG variables after a stretching protocol, as these variables can be contaminated by the shift of the Iz. Expand
The Recovery of Muscle Spindle Sensitivity Following Stretching Is Promoted by Isometric but Not by Dynamic Muscle Contractions
TLDR
It is suggested that not every type of muscle contraction promotes a prompt recovery of a stretch-induced inhibition of muscle spindle sensitivity following static stretching, which indicates that muscle stretching can be detrimental to muscle performance. Expand
Acute passive stretching alters the mechanical properties of human plantar flexors and the optimal angle for maximal voluntary contraction
TLDR
Investigating whether acute passive stretching reduced maximal isometric voluntary contraction (MVC) of the plantar flexors (PF) and if so, by what mechanisms was attributed to changes in the mechanical properties of PF and not to reduced muscle activation. Expand
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