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

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Title: Characteristics of Postural Muscle Activation Patterns Induced by Unexpected Surface Perturbations in Elite Ski Jumpers
Authors: Mani, Hiroki Browse this author
Izumi, Tatsuya Browse this author
Konishi, Tomoya Browse this author
Samukawa, Mina Browse this author →KAKEN DB
Yamamoto, Keizo Browse this author
Watanabe, Kazuhiko Browse this author
Asaka, Tadayoshi Browse this author →KAKEN DB
Keywords: Postural reactions
Ski jumpers
Muscle activation pattern
Issue Date: Jun-2014
Publisher: Society of Physical Therapy Science
Journal Title: Journal of Physical Therapy Science
Volume: 26
Issue: 6
Start Page: 833
End Page: 839
Publisher DOI: 10.1589/jpts.26.833
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.
Rights: http://creativecommons.org/licenses/by-nc-nd/3.0/
Type: article
URI: http://hdl.handle.net/2115/56939
Appears in Collections:保健科学院・保健科学研究院 (Graduate School of Health Sciences / Faculty of Health Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 浅賀 忠義

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