Adaptation effects in static postural control by providing simultaneous visual feedback of center of pressure and center of gravity
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 health...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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BMC
2017-07-01
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| Series: | Journal of Physiological Anthropology |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s40101-017-0147-5 |
| _version_ | 1828837995237605376 |
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| author | Kenta Takeda Hiroki Mani Naoya Hasegawa Yuki Sato Shintaro Tanaka Hiroshi Maejima Tadayoshi Asaka |
| author_facet | Kenta Takeda Hiroki Mani Naoya Hasegawa Yuki Sato Shintaro Tanaka Hiroshi Maejima Tadayoshi Asaka |
| author_sort | Kenta Takeda |
| collection | DOAJ |
| description | 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 (COGAP) 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 COGAP moved forward and vice versa. The COP + COG group received the real-time COPAP and COGAP 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 COGAP and reduce the COGAP 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–COGAP interaction reduces postural sway better than the training using the COPAP alone during quiet standing. That is, even COPAP fluctuation around the COGAP would be effective in reducing the COMAP velocity. |
| first_indexed | 2024-12-12T18:53:38Z |
| format | Article |
| id | doaj.art-ba00b91bb74d4b6298cf0572c67b77cb |
| institution | Directory Open Access Journal |
| issn | 1880-6805 |
| language | English |
| last_indexed | 2024-12-12T18:53:38Z |
| publishDate | 2017-07-01 |
| publisher | BMC |
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| series | Journal of Physiological Anthropology |
| spelling | doaj.art-ba00b91bb74d4b6298cf0572c67b77cb2022-12-22T00:15:18ZengBMCJournal of Physiological Anthropology1880-68052017-07-013611810.1186/s40101-017-0147-5Adaptation effects in static postural control by providing simultaneous visual feedback of center of pressure and center of gravityKenta Takeda0Hiroki Mani1Naoya Hasegawa2Yuki Sato3Shintaro Tanaka4Hiroshi Maejima5Tadayoshi Asaka6Graduate School of Health Sciences, Hokkaido UniversityDepartment of Rehabilitation Science, Faculty of Health Sciences, Hokkaido UniversityGraduate School of Health Sciences, Hokkaido UniversityGraduate School of Health Sciences, Hokkaido UniversityGraduate School of Health Sciences, Hokkaido UniversityDepartment of Rehabilitation Science, Faculty of Health Sciences, Hokkaido UniversityDepartment of Rehabilitation Science, Faculty of Health Sciences, Hokkaido UniversityAbstract 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 (COGAP) 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 COGAP moved forward and vice versa. The COP + COG group received the real-time COPAP and COGAP 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 COGAP and reduce the COGAP 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–COGAP interaction reduces postural sway better than the training using the COPAP alone during quiet standing. That is, even COPAP fluctuation around the COGAP would be effective in reducing the COMAP velocity.http://link.springer.com/article/10.1186/s40101-017-0147-5Center of gravityCenter of massCenter of pressureStatic postureVisual feedback training |
| spellingShingle | Kenta Takeda Hiroki Mani Naoya Hasegawa Yuki Sato Shintaro Tanaka Hiroshi Maejima Tadayoshi Asaka Adaptation effects in static postural control by providing simultaneous visual feedback of center of pressure and center of gravity Journal of Physiological Anthropology Center of gravity Center of mass Center of pressure Static posture Visual feedback training |
| title | Adaptation effects in static postural control by providing simultaneous visual feedback of center of pressure and center of gravity |
| title_full | Adaptation effects in static postural control by providing simultaneous visual feedback of center of pressure and center of gravity |
| title_fullStr | Adaptation effects in static postural control by providing simultaneous visual feedback of center of pressure and center of gravity |
| title_full_unstemmed | Adaptation effects in static postural control by providing simultaneous visual feedback of center of pressure and center of gravity |
| title_short | Adaptation effects in static postural control by providing simultaneous visual feedback of center of pressure and center of gravity |
| title_sort | adaptation effects in static postural control by providing simultaneous visual feedback of center of pressure and center of gravity |
| topic | Center of gravity Center of mass Center of pressure Static posture Visual feedback training |
| url | http://link.springer.com/article/10.1186/s40101-017-0147-5 |
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