• powerful contractions
  • In large order airways (carina) of the human, several isoprostanes evoked powerful contractions, with 8-iso-prostaglandin (PG) E 2 , 8-iso-PGF 1 α , and 8-iso-PGF 2 α being the most efficacious (and with logEC 50 values of 7.0, 5.9, and 6.2 μM, respectively). (aspetjournals.org)
  • Creatine phosphate stores energy so ATP can be rapidly regenerated within the muscle cells from adenosine diphosphate (ADP) and inorganic phosphate ions, allowing for sustained powerful contractions that last between 5-7 seconds. (wikipedia.org)
  • Stimulation
  • High-load isometric exercise is considered an effective countermeasure against muscle atrophy, but therapeutic electrical stimulation for muscle atrophy is often performed without loading. (hindawi.com)
  • In the present study, we investigated the combined effectiveness of electrical stimulation and high-load isometric contraction in preventing muscle atrophy induced by hindlimb unloading. (hindawi.com)
  • Moreover, combining electrical stimulation with high-load isometric contraction enhanced this effect. (hindawi.com)
  • On the other hand, in electrical stimulation with high-load isometric contraction, inhibition of the overexpression of cathepsin L and atrogin-1 mRNA in addition to calpain 1, calpain 2, and MuRF-1 mRNA was confirmed. (hindawi.com)
  • These findings suggest that the combination of electrical stimulation and high-load isometric contraction is effective as a countermeasure against muscle atrophy. (hindawi.com)
  • en] In 7 normal subjects we compared the facilitatory effect of isometric contraction of the tibialis anterior on the size of electromyographic responses evoked in this muscle by electric stimuli applied over the cervical column and by electric and magnetic percutaneous stimulation of the motor cortex. (uliege.be)
  • torque
  • Normal subjects exerted isometric torque at a rapid rate of contraction with different amplitude targets, and at different rates with a constant target. (nii.ac.jp)
  • With a decreasing contraction rate, the agonist volley decreased in the area in correlation with the peak of the torque derivative, retaining a constant duration, while the antagonist volley disappeared. (nii.ac.jp)
  • increases
  • Sustained isometric contractions for as long as 20 to 30 seconds have been associated with increases in the synthesis of actin and myosin in the muscle, (4,12) probably mediated by these same pathways. (thefreedictionary.com)
  • While isometric training increases strength at the specific joint angles of the exercises performed and additional joint angles to a lesser extent, dynamic exercises increase strength throughout the full range of motion. (wikipedia.org)
  • physiological
  • It is this neural training that causes several weeks worth of rapid gains in strength, which level off once the nerve is generating maximum contractions and the muscle reaches its physiological limit. (wikipedia.org)
  • respectively
  • In carbachol-preconstricted tissues (pretreated with ICI 192,605 to block any potential contraction), several isoprostanes completely relaxed canine airways: 8-iso-PGE 1 , 8-iso-PGE 2 , and 8-iso-PGF 3 α were the most potent, with logIC 50 values of 6.9, 6.9, and 5.7, respectively. (aspetjournals.org)
  • indicate
  • Together, these preliminary observations indicate that the response to an isometric fatiguing contraction differs between the affected and less-affected side post-stroke, and may suggest that central mechanisms observed here as changes in firing rate are the dominant processes leading to task failure on the affected side. (frontiersin.org)
  • exercise
  • isometric exercise (syn static exercise) exercise in which this condition obtains. (thefreedictionary.com)
  • An isometric exercise tool is a device used to exercise most body parts including the wrist and is often used as part of physical therapy or in order to build muscle strength in a low impact manner. (wikipedia.org)
  • Isometric exercise tools perform exercises or strength test using static contraction of a muscle without any visible movement in the angle of the joint. (wikipedia.org)
  • New isometric exercise tools often used force gauges and a micro processor and then output the force onto an LCD screen or store the information later to be downloaded onto a computer. (wikipedia.org)
  • Substrates are depleted during exercise, resulting in a lack of intracellular energy sources to fuel contractions. (wikipedia.org)
  • responses
  • In cases where vibration and contraction had equal facilitatory effects, there was no further facilitation of the responses when both conditions were applied together. (uliege.be)
  • subjects
  • We performed a study on a group of asymptomatic subjects that showed a lack of correlation between isometric grip strength and thenar MUNE. (hindawi.com)
  • These results suggest that rapid isometric contractions are controlled by an amplitude-modulated pulse of agonist activation, which is associated with a pulse of antagonist activation, while the pulse of the antagonist activation is variably utilized among subjects. (nii.ac.jp)
  • interval
  • This produces a greater force than singular contractions by decreasing the interval between stimulations to produce a larger force with the same number of motor units. (wikipedia.org)
  • rate
  • During the sustained fatiguing contraction, the mean rate of change in firing rate across all detected MUs was greater on the affected side (-0.02 ± 0.03 Hz/s) than on the less-affected side (-0.004 ± 0.003 Hz/s, p = 0.045). (frontiersin.org)
  • Temporal motor unit recruitment, or rate coding, deals with the frequency of activation of muscle fiber contractions. (wikipedia.org)