Effects of prolonged patellar tendon vibration on force steadiness in quadriceps femoris during force-matching task

Saito, Akira; Ando, Ryosuke; Akima, Hiroshi

doi:10.1007/s00221-015-4447-x

Cited by 14 publications

(17 citation statements)

References 46 publications

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“…Second, vibration-induced decrement in RMS-EMG of VL and BF might be due to changes in peripheral factors rather than regulation of the neural command. However, prolonged patellar tendon vibration did not affect M-wave amplitudes of VL and/or VM (Fry and Folland 2014 ; Saito et al 2016 ), suggesting that the above possibility was unlikely in the present study. Finally, the smaller RMS-EMG of RF compared with the vasti during squat might be related to the inter-muscle difference in the muscle shortening during the exercise.…”

Section: Discussionmentioning

confidence: 49%

Effect of prolonged vibration to synergistic and antagonistic muscles on the rectus femoris activation during multi-joint exercises

et al. 2017

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PurposeUnique neuromuscular activation of the quadriceps femoris is observed during multi-joint leg extensions: lower activation of the biarticular rectus femoris (RF) than monoarticular vasti muscles. As one of the potential mechanisms for the lower RF activation, Ia afferent-mediated inhibitory connections between synergistic muscles and/or between agonist and antagonist muscles have been proposed. If this is the major factor, it is hypothesized that RF activation during multi-joint leg extensions increases after prolonged vibration to synergistic and/or antagonist muscles. This study tested the hypothesis.MethodsFourteen men exerted maximal voluntary isometric knee extension and flexion and performed submaximal parallel squat before and after one of the following three interventions on different days: prolonged vibration to the vastus lateralis (VL, synergist) or biceps femoris (BF, antagonist), or quiet sitting for 30 min. Muscle activations of the quadriceps femoris and hamstrings were determined using surface electromyography.ResultsAfter prolonged VL or BF vibration, VL (21%) or BF (30%) activation during isometric contractions significantly decreased, which was significantly correlated with the reduction of the maximal isometric knee extension or flexion strength. The magnitude of RF activation during squat was significantly lower than those of VL and the vastus medialis. No significant increase in RF activation during squat was observed after vibrations.ConclusionThe findings suggest that lower biarticular RF activation compared with the monoarticular vasti muscles during multi-joint exercises does not result from the modulation by peripheral inhibitory input from Ia afferents originating from synergist and/or antagonist muscles.

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Section: Discussionmentioning

confidence: 49%

Effect of prolonged vibration to synergistic and antagonistic muscles on the rectus femoris activation during multi-joint exercises

et al. 2017

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“…However, in our study, we were also expecting that the depression in the Ia afferent activity would have decreased muscle tremor but this did not occur. Several explanations are possible: a) the Ia afferent inhibition achieved was not sufficient to be mirrored into actual tremor or steadiness, possibly due, as already suggested by others (Saito et al, 2016;Shinohara et al, 2005), to specificity in muscle spindle density, sensitivity and responses to vibration. b) There is no direct correlation between H reflex amplitude and tremor.…”

Section: ) Discussionmentioning

confidence: 90%

“…Opposite results were obtained during isometric elbow flexions at 15% MVC following five seconds of vibration (+40% in CoV (Harwood, Cornett, Edwards, Brown, & Jakobi, 2014)), and during isometric contraction of the first dorsal interosseous at ~5% MVC following 30 minutes of tendon vibration (+21% SD of force signal (Shinohara, Moritz, Pascoe, & Enoka, 2005)). Specificity of the muscle group tested, in terms of muscle spindle density and sensitivity, was proposed as one possible explanation for the diverse findings (Saito et al, 2016;Shinohara et al, 2005). This justification is legitimate and further supported by the evidence that muscle spindle afferents inputs are unevenly distributed among motor units (MUs) of synergistic muscles and even among MUs of the homonymous muscle (Hamm, Koehler, Stuart, & Vanden Noven, 1985;Lucas, Cope, & Binder, 1984).…”

Section: ) Introductionmentioning

confidence: 94%

“…Indeed, prolonged muscle vibration was demonstrated to reduce the normal increase in tremor during sustained fatiguing isometric plantar flexions at 30% of maximal voluntary contraction (MVC) (Cresswell & Löscher, 2000) and a decrease in the standard deviation (SD) of force during isometric plantar flexions performed at 2.5 and 10% MVC (Yoshitake, Shinohara, Kouzaki, & Fukunaga, 2004). By applying the same vibration though, Saito et al ( 2016) reported neither changes in coefficient of variation (CoV) of the force nor changes in the power spectra analysis within any frequency band, during isometric knee extensions at 2.5, 10 and 30% MVC. Opposite results were obtained during isometric elbow flexions at 15% MVC following five seconds of vibration (+40% in CoV (Harwood, Cornett, Edwards, Brown, & Jakobi, 2014)), and during isometric contraction of the first dorsal interosseous at ~5% MVC following 30 minutes of tendon vibration (+21% SD of force signal (Shinohara, Moritz, Pascoe, & Enoka, 2005)).…”

Section: ) Introductionmentioning

confidence: 99%

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Local vibration inhibits H-reflex but does not compromise manual dexterity and does not increase tremor

Budini

Laudani

Bernardini

et al. 2017

Human Movement Science

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The present work aimed at investigating the effects of local vibration on upper limb postural and kinetic tremor, on manual dexterity and on spinal reflex excitability. Previous studies have demonstrated a decrease in spinal reflex excitability and in force fluctuations in the lower limb but an increase in force fluctuation in the upper limbs. As hand steadiness is of vital importance in many daily-based tasks, and local vibration may also be applied in movement disorders, we decided to further explore this phenomenon. Ten healthy volunteers (26±3years) were tested for H reflex, postural and kinetic tremor and manual dexterity through a Purdue test. EMG was recorded from flexor carpi radialis (FCR) and extensor digitorum communis (EDC). Measurements were repeated at baseline, after a control period during which no vibration was delivered and after vibration. Intervention consisted in holding for two minutes a vibrating handle (frequency 75Hz, displacement∼7mm), control consisted in holding for two minutes the same handle powered off. Reflex excitability decreased after vibration whilst postural tremor and manual dexterity were not affected. Peak kinetic tremor frequency increased from baseline to control measurements (P=0.002). Co-activation EDC/FCR increased from control to vibration (P=0.021). These results show that two minutes local vibration lead to a decrease in spinal excitability, did not compromise manual dexterity and did not increase tremor; however, in contrast with expectations, tremor did not decrease. It is suggested that vibration activated several mechanisms with opposite effects, which resulted in a neutral outcome on postural and kinetic tremor.

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“…In contrast with these results, most authors observed a decrease in maximal force production after 1 session of prolonged tendon vibration. 1,3,5,10 For instance, Ushiyama et al 3 reported a greater decrease (~17%) for PF MVC strength after 30 minutes of Achilles tendon vibration.…”

Section: Discussionmentioning

confidence: 99%

No Alteration of the Neuromuscular Performance of Plantar-Flexor Muscles After Achilles Tendon Vibration

Cattagni

Billet

Cornu

et al. 2017

Journal of Sport Rehabilitation

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Context: Prolonged tendon vibration may induce muscle fatigue, as assessed by a decrease in maximal force production. It remains unknown, however, whether the decrease in muscle strength after prolonged Achilles tendon vibration is related to the vibration frequency. Objective: To assess the maximal capacity of plantarflexor (PF) neuromuscular function before and after prolonged Achilles tendon vibration at low and high frequencies generated using a portable device. Design: Pre-and posttest intervention with control. Setting: University laboratory. Participants: 10 healthy men age 22.6 ± 4.0 y. Intervention: Each subject participated in 3 experimental sessions that were randomly distributed and separated by 1 wk. During each experimental session, 1 of the following vibration protocols was applied for 30 min: 40-Hz vibration, 100-Hz vibration, or no vibration (control protocol). Main Outcome Measures: Maximal-voluntary-contraction torque, voluntary activation level, twitch torque, maximal electromyographic activity, and maximal M-wave of PF muscles (measured before and after each vibration or control protocol). Results: Statistical analysis exhibited no significant effect of vibration protocol on the measured variables. Conclusions: The current study demonstrates that 30 min of Achilles tendon vibration at a low or high frequency using a portable stimulator did not affect the neuromuscular performance of the PF muscles. These results emphasize the limits of tendon vibration, whatever the frequency applied, for inducing neuromuscular fatigue. Prolonged muscle or tendon vibration may induce fatigue, as assessed by a decrease in maximal-voluntary-contraction (MVC) strength, 1-6 even though some investigations reported no fatigue effect. 7,8 Ushiyama et al 3 found a significant decrease in plantar-flexor (PF) MVC strength (-16.6%) after 30 minutes of Achilles tendon vibration at 100 Hz, using a fixed mechanical stimulator. Those authors observed that the reduction in MVC strength was due to an attenuation of Ia afferent activity leading to a decrease in muscle activity that was more pronounced for the gastrocnemii than for the soleus muscle. 3 Nevertheless, some questions related to this finding remain to be clarified. First, when vibration is applied to the quadriceps muscle for 30 minutes, the reduction in MVC strength is greater at low frequency (30 Hz) than at high frequency (120 Hz). 2 Roll et al 9 observed that muscle-spindle primary afferents are stimulated, with a 1-to-1 discharge rate, by vibration frequencies up to 100 Hz, but frequencies above 100 Hz impaired the relationship. They showed that vibration frequency is optimal between 80 and 100 Hz, that is, high-frequency vibration, to activate the primary endings of the muscle spindle, while secondary endings can be recruited in the 20-to 60-Hz vibration range, that is, low-frequency vibration. Consequently, it remains unknown whether the decrease in muscle strength after prolonged Achilles tendon vibration is related to high (ie, involving Ia afferent acti...

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Effects of prolonged patellar tendon vibration on force steadiness in quadriceps femoris during force-matching task

Cited by 14 publications

References 46 publications

Effect of prolonged vibration to synergistic and antagonistic muscles on the rectus femoris activation during multi-joint exercises

Effect of prolonged vibration to synergistic and antagonistic muscles on the rectus femoris activation during multi-joint exercises

Local vibration inhibits H-reflex but does not compromise manual dexterity and does not increase tremor

No Alteration of the Neuromuscular Performance of Plantar-Flexor Muscles After Achilles Tendon Vibration

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