Muscle pre-activation strategies play a role in modulating K-vert for change of direction manoeuvres: An observational study

Benjamin Serpell, Nick Ball, Jennie Scarvell, Alec Buttfield, Paul Smith

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The aim of the study presented in this paper was to establish if a relationship existed between lower limb muscle pre-activation strategies and vertical stiffness (Kvert). Participants from a professional rugby union club all performed a multidirectional hopping task on a force platform which measured Kvert. Muscle activity was concurrently measured for the gluteus maximus, vastus lateralis, vastus medialis, biceps femoris, semimembranosus, and medial gastrocnemius using electromyography and the activity of those muscles in the 100 ms prior to foot contact (pre-activation) was analysed. Moderate to strong positive relationships were typically seen for Kvert and muscle pre-activation for each muscle when normalized to maximum voluntary contraction. Pre-activation cocontraction of the muscles surrounding the knee joint also showed a typically moderate relationship with Kvert and peak muscle activation of antagonist muscles at the knee joint were typically similar. Results suggest that muscle pre-activation strategies play a role in modulating Kvert for change of direction manoeuvre.
Original languageEnglish
Pages (from-to)704-710
Number of pages7
JournalJournal of Electromyography and Kinesiology
Volume24
Issue number5
DOIs
Publication statusPublished - 2014

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Observational Studies
Muscles
Quadriceps Muscle
Knee Joint
Direction compound
Football
Electromyography
Foot
Lower Extremity

Cite this

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title = "Muscle pre-activation strategies play a role in modulating K-vert for change of direction manoeuvres: An observational study",
abstract = "The aim of the study presented in this paper was to establish if a relationship existed between lower limb muscle pre-activation strategies and vertical stiffness (Kvert). Participants from a professional rugby union club all performed a multidirectional hopping task on a force platform which measured Kvert. Muscle activity was concurrently measured for the gluteus maximus, vastus lateralis, vastus medialis, biceps femoris, semimembranosus, and medial gastrocnemius using electromyography and the activity of those muscles in the 100 ms prior to foot contact (pre-activation) was analysed. Moderate to strong positive relationships were typically seen for Kvert and muscle pre-activation for each muscle when normalized to maximum voluntary contraction. Pre-activation cocontraction of the muscles surrounding the knee joint also showed a typically moderate relationship with Kvert and peak muscle activation of antagonist muscles at the knee joint were typically similar. Results suggest that muscle pre-activation strategies play a role in modulating Kvert for change of direction manoeuvre.",
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Muscle pre-activation strategies play a role in modulating K-vert for change of direction manoeuvres: An observational study. / Serpell, Benjamin; Ball, Nick; Scarvell, Jennie; Buttfield, Alec; Smith, Paul.

In: Journal of Electromyography and Kinesiology, Vol. 24, No. 5, 2014, p. 704-710.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Muscle pre-activation strategies play a role in modulating K-vert for change of direction manoeuvres: An observational study

AU - Serpell, Benjamin

AU - Ball, Nick

AU - Scarvell, Jennie

AU - Buttfield, Alec

AU - Smith, Paul

PY - 2014

Y1 - 2014

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AB - The aim of the study presented in this paper was to establish if a relationship existed between lower limb muscle pre-activation strategies and vertical stiffness (Kvert). Participants from a professional rugby union club all performed a multidirectional hopping task on a force platform which measured Kvert. Muscle activity was concurrently measured for the gluteus maximus, vastus lateralis, vastus medialis, biceps femoris, semimembranosus, and medial gastrocnemius using electromyography and the activity of those muscles in the 100 ms prior to foot contact (pre-activation) was analysed. Moderate to strong positive relationships were typically seen for Kvert and muscle pre-activation for each muscle when normalized to maximum voluntary contraction. Pre-activation cocontraction of the muscles surrounding the knee joint also showed a typically moderate relationship with Kvert and peak muscle activation of antagonist muscles at the knee joint were typically similar. Results suggest that muscle pre-activation strategies play a role in modulating Kvert for change of direction manoeuvre.

KW - knee

KW - kinematics

KW - biomechanics

KW - co-contraction

KW - pre-activation

KW - vertical stiffness

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