Broad stance conditions change postural ...
Document type :
Article dans une revue scientifique
PMID :
Permalink :
Title :
Broad stance conditions change postural control and postural sway.
Author(s) :
Journal title :
Journal of motor behavior
Abbreviated title :
J Mot Behav
Volume number :
44
Pages :
125-31
Publication date :
2012
ISSN :
1940-1027
English keyword(s) :
Adult
Biomechanical Phenomena
Female
Head
Humans
Male
Postural Balance
Posture
Torso
Biomechanical Phenomena
Female
Head
Humans
Male
Postural Balance
Posture
Torso
HAL domain(s) :
Sciences cognitives
English abstract : [en]
Intuitively, a broad stance (i.e., standing with the feet farther apart than usual) should significantly improve postural stability. However, this intuition was not confirmed in quiet stance. Hence, a motion analysis system ...
Show more >Intuitively, a broad stance (i.e., standing with the feet farther apart than usual) should significantly improve postural stability. However, this intuition was not confirmed in quiet stance. Hence, a motion analysis system (markers attached to the trunk and head) and a force platform were used to investigate 13 healthy, young adults who performed 8 trials in standard and broad stances. In broad stance, the medialateral center of pressure (COP) sway mean power frequency was expected to be greater, whereas the variability (standard deviation) of COP, head, and trunk sway and the mean velocity of head and trunk sway was expected to be significantly lower. Accordingly, adoption of a broad stance significantly increased the medialateral mean power frequency of COP sway; decreased the standard deviation of medialateral COP, trunk, and head sway; and decreased the medialateral mean velocity of head sway. A broad stance was also associated with lower variability for head and COP sways in the anteroposterior axis. Unexpectedly, an effect of trial repetition was found for the variability of medialateral trunk sway. This was probably due to the break halfway through the study. In practical terms, broad stance conditions can improve postural control in the medialateral and anteroposterior axes.Show less >
Show more >Intuitively, a broad stance (i.e., standing with the feet farther apart than usual) should significantly improve postural stability. However, this intuition was not confirmed in quiet stance. Hence, a motion analysis system (markers attached to the trunk and head) and a force platform were used to investigate 13 healthy, young adults who performed 8 trials in standard and broad stances. In broad stance, the medialateral center of pressure (COP) sway mean power frequency was expected to be greater, whereas the variability (standard deviation) of COP, head, and trunk sway and the mean velocity of head and trunk sway was expected to be significantly lower. Accordingly, adoption of a broad stance significantly increased the medialateral mean power frequency of COP sway; decreased the standard deviation of medialateral COP, trunk, and head sway; and decreased the medialateral mean velocity of head sway. A broad stance was also associated with lower variability for head and COP sways in the anteroposterior axis. Unexpectedly, an effect of trial repetition was found for the variability of medialateral trunk sway. This was probably due to the break halfway through the study. In practical terms, broad stance conditions can improve postural control in the medialateral and anteroposterior axes.Show less >
Language :
Anglais
Audience :
Non spécifiée
Collections :
Submission date :
2019-06-05T18:20:40Z
2019-06-18T13:40:41Z
2019-06-18T14:37:01Z
2021-08-08T05:56:51Z
2021-08-12T06:14:35Z
2021-09-24T07:58:55Z
2019-06-18T13:40:41Z
2019-06-18T14:37:01Z
2021-08-08T05:56:51Z
2021-08-12T06:14:35Z
2021-09-24T07:58:55Z
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