| Title: |
Neural adaptations in quadriceps muscle after 4 weeks of local vibration training in young versus older subjects |
| Authors: |
Souron, Robin; Besson, Thibault; Lapole, Thomas; Millet, Guillaume, Y |
| Contributors: |
Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM); Université Claude Bernard Lyon 1 (UCBL); Université de Lyon-Université de Lyon-Université Jean Monnet - Saint-Étienne (UJM)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry ); University of Calgary |
| Source: |
ISSN: 1715-5312. |
| Publisher Information: |
CCSD; NRC Research Press (Canadian Science Publishing) |
| Publication Year: |
2018 |
| Collection: |
Université Jean Monnet – Saint-Etienne: HAL |
| Subject Terms: |
older population entraînement par vibration locale; corticospinal excitability and inhibition; cortical voluntary activation; transcranial magnetic stimulation; local vibration training; stimulation magnétique transcrânienne; activation corticale volontaire; excitabilité et inhibition corticospinale; population âgée; [SDV]Life Sciences [q-bio] |
| Description: |
International audience ; This study investigated the effects of a 4-week local vibration training (LVT) on the function of the knee extensors and corticospinal properties in healthy young and older subjects. Seventeen subjects (9 young and 8 older) performed 3 testing sessions: before (PRE 1 ) and after (PRE 2 ) a 4-week resting period to control the repeatability of the data as well as after the LVT (POST). Jump performance, maximal voluntary contraction (MVC) and electromyographic (EMG) activity on vastus lateralis and rectus femoris muscles were assessed. Single-pulse transcranial magnetic stimulation (TMS) allowed evaluation of cortical voluntary activation (VA TMS ), motor evoked potential (MEP) area, and silent period (SP) duration. All training adaptations were similar between young and older subjects (p > 0.05) and the following results reflect the pooled sample of subjects. MVC (+11.9% ± 8.0%, p < 0.001) and VA TMS (+3.6% ± 5.2%, p=0.004) were significantly increased at POST compared with PRE 2 . Maximal vastus lateralis EMG was significantly increased at POST (+21.9% ± 33.7%, p=0.03). No changes were reported for MEPs on both muscles (p > 0.05). SPs recorded during maximal and submaximal contractions decreased in both muscles at POST (p < 0.05). Vertical jump performance was increased at POST (p < 0.05). LVT seems as effective in young as in older subjects to improve maximal functional capacities through neural modulations occurring at least partly at the supra-spinal level. Local vibration may be used as an efficient alternative training method to improve muscular performance in both healthy young and older subjects. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.1139/apnm-2017-0612 |
| Availability: |
https://hal.science/hal-03467132; https://hal.science/hal-03467132v1/document; https://hal.science/hal-03467132v1/file/Souron%202017%20App%20Physiol%20Nutr%20Metab%20%281%29.pdf; https://doi.org/10.1139/apnm-2017-0612 |
| Rights: |
info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.D7CA91F6 |
| Database: |
BASE |