Characteristics of Postural Muscle Activation Patterns Induced by Unexpected Surface Perturbations in Elite Ski Jumpers

• Mani Hiroki

  Graduate School of Health Sciences, Hokkaido University, Japan

• Izumi Tatsuya

  Graduate School of Health Sciences, Hokkaido University, Japan

• Konishi Tomoya

  Graduate School of Health Sciences, Hokkaido University, Japan

• Samukawa Mina

  Faculty of Health Sciences, Hokkaido University: N12-W5, Kita-ku, Sapporo 060-0826, Japan

• Yamamoto Keizo

  Department of Sport Education, Hokusho University, Japan

• Watanabe Kazuhiko

  Center for Collaborative Research and Community Cooperation, Hiroshima University, Japan

• Asaka Tadayoshi

  Faculty of Health Sciences, Hokkaido University: N12-W5, Kita-ku, Sapporo 060-0826, Japan

Abstract

[Purpose] This study investigated the characteristics of postural control following postural disturbance in elite athletes. [Subjects] Ten elite ski jumpers and ten control subjects participated in this study. [Methods] Subjects were required to maintain balance without stepping following unexpected horizontal surface perturbation in a forward or backward direction. [Results] A lower and reproducible peak magnitude of the center of mass velocity was shown in the athlete group compared to the control group. Cross-correlation analyses showed longer time lags at the moment of peak correlation coefficient between trunk flexor and extensor muscle activities, and shorter time lags and higher correlations between ankle flexor and extensor muscle activities were shown in the athlete group than in the control group. [Conclusion] The elite ski jumpers showed superior balance performance following surface perturbations, more reciprocal patterns in agonist-antagonist pairs of proximal postural muscles, and more co-contraction patterns in distal postural muscles during automatic postural responses than control individuals. This strategy may be useful in sports requiring effective balance recovery in environments with a dynamically changing surface, as well as in rehabilitation.

Journal

• Journal of Physical Therapy Science

  Journal of Physical Therapy Science 26 (6), 833-839, 2014

  The Society of Physical Therapy Science

Keywords

• Postural reactions
• Ski jumpers
• Muscle activation pattern

Details

• CRID: 1390001204330575360
• NII Article ID: 130004432136
• NII Article ID: 120005472206
• NII Book ID: AA10798949
• DOI: 10.1589/jpts.26.833
• COI: 1:STN:280:DC%2BC2cbhsVelsw%3D%3D
• ISSN: 21875626
• ISSN: 09155287
• HANDLE: 2115/56939
• PubMed: 25013278
• Web Site: https://www.jstage.jst.go.jp/article/jpts/26/6/26_jpts-2013-524/_pdf
• Web Site: https://search.jamas.or.jp/link/ui/2015175845
• Text Lang: en
• Data Source:
  • JaLC
  • IRDB
  • Crossref
  • PubMed
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed