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Alternate muscle activity patterns among synergists of the quadriceps femoris including the vastus intermedius during low-level sustained contraction in men.
Muscle Nerve. 2012 Jul; 46(1):86-95.MN

Abstract

INTRODUCTION

We quantified the alternate muscle activity among four synergists of the quadriceps femoris (QF), including the vastus intermedius (VI), during low-level sustained contraction.

METHODS

Surface electromyograms (EMGs) were recorded from the VI, vastus lateralis (VL), vastus medialis (VM), and rectus femoris (RF) in 11 healthy men during isometric knee extension at 2.5% maximum voluntary contraction for 60 min to determine alternate muscle activity among the four synergists of the QF.

RESULTS

Alternate activity was primarily found between the RF and VI, VL, or VM, and rarely found among the vasti muscles. Multiple muscle comparison revealed the duration of alternate activity in the RF/VI+VL+VM combination remained high throughout the experiment, although the frequency of that combination did not.

CONCLUSIONS

These results suggested that there is a fixed muscle combination, i.e., RF and the 3 vasti muscles, to perform low-intensity sustained contraction in the human QF.

Authors+Show Affiliations

Research Center of Health, Physical Fitness and Sports, Nagoya University, Nagoya, Japan. akima@nagoya-u.jpNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22692997

Citation

Akima, Hiroshi, et al. "Alternate Muscle Activity Patterns Among Synergists of the Quadriceps Femoris Including the Vastus Intermedius During Low-level Sustained Contraction in Men." Muscle & Nerve, vol. 46, no. 1, 2012, pp. 86-95.
Akima H, Saito A, Watanabe K, et al. Alternate muscle activity patterns among synergists of the quadriceps femoris including the vastus intermedius during low-level sustained contraction in men. Muscle Nerve. 2012;46(1):86-95.
Akima, H., Saito, A., Watanabe, K., & Kouzaki, M. (2012). Alternate muscle activity patterns among synergists of the quadriceps femoris including the vastus intermedius during low-level sustained contraction in men. Muscle & Nerve, 46(1), 86-95. https://doi.org/10.1002/mus.23268
Akima H, et al. Alternate Muscle Activity Patterns Among Synergists of the Quadriceps Femoris Including the Vastus Intermedius During Low-level Sustained Contraction in Men. Muscle Nerve. 2012;46(1):86-95. PubMed PMID: 22692997.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Alternate muscle activity patterns among synergists of the quadriceps femoris including the vastus intermedius during low-level sustained contraction in men. AU - Akima,Hiroshi, AU - Saito,Akira, AU - Watanabe,Kohei, AU - Kouzaki,Motoki, PY - 2012/6/14/entrez PY - 2012/6/14/pubmed PY - 2012/9/14/medline SP - 86 EP - 95 JF - Muscle & nerve JO - Muscle Nerve VL - 46 IS - 1 N2 - INTRODUCTION: We quantified the alternate muscle activity among four synergists of the quadriceps femoris (QF), including the vastus intermedius (VI), during low-level sustained contraction. METHODS: Surface electromyograms (EMGs) were recorded from the VI, vastus lateralis (VL), vastus medialis (VM), and rectus femoris (RF) in 11 healthy men during isometric knee extension at 2.5% maximum voluntary contraction for 60 min to determine alternate muscle activity among the four synergists of the QF. RESULTS: Alternate activity was primarily found between the RF and VI, VL, or VM, and rarely found among the vasti muscles. Multiple muscle comparison revealed the duration of alternate activity in the RF/VI+VL+VM combination remained high throughout the experiment, although the frequency of that combination did not. CONCLUSIONS: These results suggested that there is a fixed muscle combination, i.e., RF and the 3 vasti muscles, to perform low-intensity sustained contraction in the human QF. SN - 1097-4598 UR - https://www.unboundmedicine.com/medline/citation/22692997/Alternate_muscle_activity_patterns_among_synergists_of_the_quadriceps_femoris_including_the_vastus_intermedius_during_low_level_sustained_contraction_in_men_ L2 - https://doi.org/10.1002/mus.23268 DB - PRIME DP - Unbound Medicine ER -