Effect of prior neuromuscular electrical stimulation of vastus lateralis on the fatigue induced by a sustained voluntary knee extension in men.
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| Názov: | Effect of prior neuromuscular electrical stimulation of vastus lateralis on the fatigue induced by a sustained voluntary knee extension in men. |
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| Autori: | Lanfranchi, C., Matkowski, B., Rayroud, S., Martin, A., Maffiuletti, N.A., Lepers, R., Place, N. |
| Zdroj: | Journal of electromyography and kinesiology, vol. 79, pp. 102942 |
| Rok vydania: | 2024 |
| Zbierka: | Université de Lausanne (UNIL): Serval - Serveur académique lausannois |
| Predmety: | Humans, Male, Muscle Fatigue/physiology, Adult, Quadriceps Muscle/physiology, Isometric Contraction/physiology, Electric Stimulation/methods, Electromyography/methods, Knee Joint/physiology, Torque, Central fatigue, Compensatory activity, Electromyography, Maximal voluntary contraction, Peripheral fatigue |
| Popis: | The purpose of this study was to investigate the effect of vastus lateralis (VL) selective fatigue induced by neuromuscular electrical stimulation (NMES) on knee extensor electromyographic (EMG) activity during a sustained submaximal isometric contraction. Thirteen healthy men (28 ± 5 years) completed two experimental sessions in which either the VL was pre-fatigued for 17 min (NMES session) or no intervention was performed (control session, CTRL). Subsequently, participants were asked to sustain an isometric knee extension at 20 % of maximal voluntary contraction (MVC) torque until task failure. VL M-wave amplitude was reduced (-34 ± 26 %, P = 0.008) following the NMES intervention, while MVC torque was reduced by 26 ± 10 %. The time to task failure was 23 ± 10 % shorter (P = 0.002) in NMES (186 ± 75 s) than in CTRL (251 ± 128 s). EMG activity measured during the sustained contraction was higher for vastus medialis and rectus femoris muscles in NMES compared to CTRL (P < 0.001), but was comparable for VL (P > 0.05). The extent and origin of neuromuscular fatigue at task failure measured through MVCs combined with electrically-evoked contractions did not differ between NMES and CTRL. Compensatory activity from synergist muscles occurred in response to a pre-fatigue intervention, which reduced the time to task failure of a sustained submaximal contraction but did not affect the extent and origin of neuromuscular fatigue. |
| Druh dokumentu: | article in journal/newspaper |
| Popis súboru: | application/pdf |
| Jazyk: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/pmid/39546871; info:eu-repo/semantics/altIdentifier/eissn/1873-5711; info:eu-repo/semantics/altIdentifier/urn/urn:nbn:ch:serval-BIB_FE9F81CCC56F9; https://serval.unil.ch/notice/serval:BIB_FE9F81CCC56F; https://serval.unil.ch/resource/serval:BIB_FE9F81CCC56F.P001/REF.pdf |
| DOI: | 10.1016/j.jelekin.2024.102942 |
| Dostupnosť: | https://serval.unil.ch/notice/serval:BIB_FE9F81CCC56F https://doi.org/10.1016/j.jelekin.2024.102942 https://serval.unil.ch/resource/serval:BIB_FE9F81CCC56F.P001/REF.pdf http://nbn-resolving.org/urn/resolver.pl?urn=urn:nbn:ch:serval-BIB_FE9F81CCC56F9 |
| Rights: | info:eu-repo/semantics/openAccess ; CC BY 4.0 ; https://creativecommons.org/licenses/by/4.0/ |
| Prístupové číslo: | edsbas.B3AFBDFD |
| Databáza: | BASE |
Nájsť tento článok vo Web of Science | Abstrakt: | The purpose of this study was to investigate the effect of vastus lateralis (VL) selective fatigue induced by neuromuscular electrical stimulation (NMES) on knee extensor electromyographic (EMG) activity during a sustained submaximal isometric contraction. Thirteen healthy men (28 ± 5 years) completed two experimental sessions in which either the VL was pre-fatigued for 17 min (NMES session) or no intervention was performed (control session, CTRL). Subsequently, participants were asked to sustain an isometric knee extension at 20 % of maximal voluntary contraction (MVC) torque until task failure. VL M-wave amplitude was reduced (-34 ± 26 %, P = 0.008) following the NMES intervention, while MVC torque was reduced by 26 ± 10 %. The time to task failure was 23 ± 10 % shorter (P = 0.002) in NMES (186 ± 75 s) than in CTRL (251 ± 128 s). EMG activity measured during the sustained contraction was higher for vastus medialis and rectus femoris muscles in NMES compared to CTRL (P < 0.001), but was comparable for VL (P > 0.05). The extent and origin of neuromuscular fatigue at task failure measured through MVCs combined with electrically-evoked contractions did not differ between NMES and CTRL. Compensatory activity from synergist muscles occurred in response to a pre-fatigue intervention, which reduced the time to task failure of a sustained submaximal contraction but did not affect the extent and origin of neuromuscular fatigue. |
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| DOI: | 10.1016/j.jelekin.2024.102942 |