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Acute effects of quadriceps muscle versus tendon prolonged local vibration on force production capacities and central nervous system excitability

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Abstract

Purpose

The present study aimed to directly compare the effects of 30 min muscle (VIBmuscle) vs. tendon (VIBtendon) local vibration (LV) to the quadriceps on maximal voluntary isometric contraction (MVIC) and rate of torque development (RTD) as well as on central nervous system excitability (i.e. motoneuron and cortical excitability).

Methods

Before (PRE) and immediately after (POST) LV applied to the quadriceps muscle or its tendon, we investigated MVIC and RTD (STUDY #1; n = 20) or vastus lateralis (VL), vastus medialis (VM) and rectus femoris (RF) electromyography responses to thoracic electrical stimulation (TMEPs; motoneuron excitability) and transcranial magnetic stimulation (MEPs; corticospinal excitability) (STUDY #2; n = 17). MEP/TMEP ratios were further calculated to quantify changes in cortical excitability.

Results

MVIC decreased at POST (P = 0.017) without any difference between VIBtendon and VIBmuscle, while RTD decreased for VIBtendon (P = 0.013) but not VIBmuscle. TMEP amplitudes were significantly decreased for all muscles (P = 0.014, P < 0.001 and P = 0.004 for VL, VM and RF, respectively) for both LV sites. While no changes were observed for MEP amplitude, MEP/TMEP ratios increased at POST for VM and RF muscles (P = 0.009 and P = 0.013, respectively) for both VIBtendon and VIBmuscle.

Conclusion

The present results suggest that prolonged muscle and tendon LV are similarly effective in modulating central nervous system excitability and decreasing maximal force. Yet, altered explosive performance after tendon but not muscle LV suggests greater neural alterations when tendons are vibrated.

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Abbreviations

EMG:

Electromyography

LV:

Local vibration

MEP:

Motor evoked potential

Mmax :

Resting maximal M-wave

MVIC:

Maximal voluntary isometric contraction

PNS:

Peripheral nerve stimulation

POST:

After

PRE:

Before

RF:

Rectus femoris

RTD:

Rate of torque development

TES:

Thoracic electrical stimulation

TMEP:

Thoracic MEP

TMS:

Transcranial magnetic stimulation

VIBmuscle :

Muscle local vibration

VIBtendon :

Tendon local vibration

VL:

Vastus lateralis

VM:

Vastus medialis

References

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Authors and Affiliations

Authors

Contributions

DK, RS, GYM and TL conceived and designed research. DK, GV and LE conducted experiments. DK, GV and TL analyzed data. DK, GV and TL wrote the manuscript. All authors read and approved the manuscript

Corresponding author

Correspondence to Thomas Lapole.

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Conflict of interest

None.

Additional information

Communicated by Toshio Moritani.

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Kennouche, D., Varesco, G., Espeit, L. et al. Acute effects of quadriceps muscle versus tendon prolonged local vibration on force production capacities and central nervous system excitability. Eur J Appl Physiol 122, 2451–2461 (2022). https://doi.org/10.1007/s00421-022-05028-9

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  • DOI: https://doi.org/10.1007/s00421-022-05028-9

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