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Adaptation effects in static postural control by providing simultaneous visual feedback of center of pressure and center of gravity

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Title: Adaptation effects in static postural control by providing simultaneous visual feedback of center of pressure and center of gravity
Authors: Takeda, Kenta Browse this author
Mani, Hiroki Browse this author
Hasegawa, Naoya Browse this author
Sato, Yuki Browse this author
Tanaka, Shintaro Browse this author
Maejima, Hiroshi Browse this author →KAKEN DB
Asaka, Tadayoshi Browse this author →KAKEN DB
Keywords: Center of gravity
Center of mass
Center of pressure
Static posture
Visual feedback training
Issue Date: 19-Jul-2017
Publisher: BioMed Central
Journal Title: Journal of physiological anthropology
Volume: 36
Start Page: 31
Publisher DOI: 10.1186/s40101-017-0147-5
PMID: 28724444
Abstract: Background: The benefit of visual feedback of the center of pressure (COP) on quiet standing is still debatable. This study aimed to investigate the adaptation effects of visual feedback training using both the COP and center of gravity (COG) during quiet standing. Methods: Thirty-four healthy young adults were divided into three groups randomly (COP + COG, COP, and control groups). A force plate was used to calculate the coordinates of the COP in the anteroposterior (COPAP) and mediolateral (COPML) directions. A motion analysis system was used to calculate the coordinates of the center of mass (COM) in both directions (COMAP and COMML). The coordinates of the COG in the AP direction (COG(AP)) were obtained from the force plate signals. Augmented visual feedback was presented on a screen in the form of fluctuation circles in the vertical direction that moved upward as the COPAP and/or COG(AP) moved forward and vice versa. The COP + COG group received the real-time COPAP and COG(AP) feedback simultaneously, whereas the COP group received the real-time COPAP feedback only. The control group received no visual feedback. In the training session, the COP + COG group was required to maintain an even distance between the COPAP and COG(AP) and reduce the COG(AP) fluctuation, whereas the COP group was required to reduce the COPAP fluctuation while standing on a foam pad. In test sessions, participants were instructed to keep their standing posture as quiet as possible on the foam pad before (pre-session) and after (post-session) the training sessions. Results: In the post-session, the velocity and root mean square of COMAP in the COP + COG group were lower than those in the control group. In addition, the absolute value of the sum of the COP - COM distances in the COP + COG group was lower than that in the COP group. Furthermore, positive correlations were found between the COMAP velocity and COP - COM parameters. Conclusions: The results suggest that the novel visual feedback training that incorporates the COPAP-COG(AP) interaction reduces postural sway better than the training using the COPAP alone during quiet standing. That is, even COPAP fluctuation around the COG(AP) would be effective in reducing the COMAP velocity.
Rights: https://creativecommons.org/licenses/by/4.0/
Type: article
URI: http://hdl.handle.net/2115/67106
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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