14 research outputs found
EUROVISCO Recommendations for Optimizing the Clinical Results of Viscosupplementation in Osteoarthritis.
LOMBER DISC HERNIATION AT 13 YEARS OF AGE
Concerning the development of spine we have to realize the importance of back pain in children. Sex related factors may play a role in spinal deformities and injuries. Lomber disc herniation (LDH) at childhood is observed in dumbbell sport or after lifting heavy loads where forces in direction of flexion are experienced. LDH at childhood may not present with symptoms. In treatment bed rest, bracing, exercise with physical agents and in unresponsive cases use of epidural corticosteroid injections are preferred. Cases with neurologic deficit and cauda equina syndromes should be treated surgically
SYMPATHETIC DYSFUNCTION IN PATIENTS WITH DIFFERENT SEVERITY OF CARPAL TUNNEL SYNDROME
Objective: Carpal tunnel syndrome (CTS) is an entrapment mononeuropathy of the median nerve at the wrist. Recently, it was reported that in the entrapment neuropathies, which involved motor and sensorial fibers, autonomic impression might occur. The aim of this study was to investigate the relationship between electrophysiological severity of CTS and sympathetic dysfunction, using the sympathetic skin response (SSR)
A Randomized Trial on the Effect of Bone Tissue on Vibration-induced Muscle Strength Gain and Vibration-induced Reflex Muscle Activity
Background:Whole-body vibration (WBV) induces reflex muscle activity and leads to increased muscle strength. However, little is known about the physiological mechanisms underlying the effects of whole-body vibration on muscular performance. Tonic vibration reflex is the most commonly cited mechanism to explain the effects of whole-body vibration on muscular performance, although there is no conclusive evidence that tonic vibration reflex occurs. The bone myoregulation reflex is another neurological mechanism used to ex-plain the effects of vibration on muscular performance. Bone myor-egulation reflex is defined as a reflex mechanism in which osteocytes exposed to cyclic mechanical loading induce muscle activity. Aims:The aim of this study was to assess whether bone tissue affect-ed vibration-induced reflex muscle activity and vibration-induced muscle strength gain. Study Design:A prospective, randomised, controlled, double-blind, parallel-group clinical trial.Methods:Thirty-four participants were randomised into two groups. High-magnitude whole-body vibration was applied in the exercise group, whereas low-magnitude whole-body vibration exercises were applied in the control group throughout 20 sessions. Hip bone min-eral density, isokinetic muscle strength, and plasma sclerostin levels were measured. The surface electromyography data were processed to obtain the Root Mean Squares, which were normalised by maxi-mal voluntarily contraction. Results:In the exercise group, muscle strength increased in the right and left knee flexors (23.9%, p=0.004 and 27.5%, p<0.0001, respective-ly). However, no significant change was observed in the knee extensormuscle strength. There was no significant change in the knee musclestrength in the control group. The vibration-induced corrected Root Mean Squares of the semitendinosus muscle was decreased by 2.8 times (p=0.005) in the exercise group, whereas there was no change in the control group. Sclerostin index was decreased by 15.2% (p=0.031) in the exercise group and increased by 20.8% (p=0.028) in the control group.A change in the sclerostin index was an important predictor of a changein the vibration-induced normalised Root Mean Square of the semiten-dinosus muscle (R2=0.7, p=0.0001). Femoral neck bone mineral densitywas an important predictor of muscle strength gain (R2=0.26, p=0.035).Conclusion:This study indicates that bone tissue may have an ef-fect on vibration-induced muscle strength gain and vibration-induced reflex muscle activity. Trial registration: ClinicalTrials.gov: NCT01310348
A Randomized Trial on the Effect of Bone Tissue on Vibration-induced Muscle Strength Gain and Vibration-induced Reflex Muscle Activity
Background: Whole-body vibration (WBV) induces reflex muscle activity and leads to increased muscle strength. However, little is known about the physiological mechanisms underlying the effects of whole-body vibration on muscular performance. Tonic vibration reflex is the most commonly cited mechanism to explain the effects of whole-body vibration on muscular performance, although there is no conclusive evidence that tonic vibration reflex occurs. The bone myoregulation reflex is another neurological mechanism used to explain the effects of vibration on muscular performance. Bone myoregulation reflex is defined as a reflex mechanism in which osteocytes exposed to cyclic mechanical loading induce muscle activity.
Aims: The aim of this study was to assess whether bone tissue affected vibration-induced reflex muscle activity and vibration-induced muscle strength gain.
Study Design: A prospective, randomised, controlled, double-blind, parallel-group clinical trial.
Methods: Thirty-four participants were randomised into two groups. High-magnitude whole-body vibration was applied in the exercise group, whereas low-magnitude whole-body vibration exercises were applied in the control group throughout 20 sessions. Hip bone mineral density, isokinetic muscle strength, and plasma sclerostin levels were measured. The surface electromyography data were processed to obtain the Root Mean Squares, which were normalised by maximal voluntarily contraction.
Results: In the exercise group, muscle strength increased in the right and left knee flexors (23.9%, p=0.004 and 27.5%, p<0.0001, respectively). However, no significant change was observed in the knee extensor muscle strength. There was no significant change in the knee muscle strength in the control group. The vibration-induced corrected Root Mean Squares of the semitendinosus muscle was decreased by 2.8 times (p=0.005) in the exercise group, whereas there was no change in the control group. Sclerostin index was decreased by 15.2% (p=0.031) in the exercise group and increased by 20.8% (p=0.028) in the control group. A change in the sclerostin index was an important predictor of a change in the vibration-induced normalised Root Mean Square of the semitendinosus muscle (R2=0.7, p=0.0001). Femoral neck bone mineral density was an important predictor of muscle strength gain (R2=0.26, p=0.035).
Conclusion: This study indicates that bone tissue may have an effect on vibration-induced muscle strength gain and vibration-induced reflex muscle activity