Abstract：
:This study explored transient characteristics of body sway during single-leg quiet stance in young ballet dancers (n = 41) and young healthy adults (n = 58). We compared the groups in terms of center of pressure (CoP) parameters (CoP velocity and amplitude, averaged across the duration of the 30-s trial), and the transient characteristics of the corresponding parameters, which were expressed as relative differences between the 1st and 2nd, and the 1st and 3rd 10-second interval within the trial (DIF_21 and DIF_31, respectively). Ballet dancers exhibited superior quiet stance postural control (2/5 parameters), as well as different transient behavior (3/5 parameters for DIF_21, and none for DIF_31). Specifically, the ballet dancers reduced body sway more during the 2nd interval, resulting in lower DIF_21 for CoP velocity (total and anterior-posterior) and CoP amplitude (medial-lateral) (effect size = 0.42-0.54). The correlations between individual CoP parameters and the corresponding DIF_21 and DIF_31 were very small or trivial (r < 0.15), suggesting that the outcomes pertaining to transient characteristic of body sway within the trial (specifically DIF_21) could represent additional information regarding the postural control during quiet stance. Future studies or even re-analyses of existing data are desired to reveal whether the measures of transient characteristics of body sway have any additional clinical utility compared to traditional whole-trial analyses.
journal_name
J Biomechjournal_title
Journal of biomechanicsauthors
Kozinc Ž,Šarabon Ndoi
10.1016/j.jbiomech.2020.110195subject
Has Abstractpub_date
2021-01-22 00:00:00pages
110195eissn
0021-9290issn
1873-2380pii
S0021-9290(20)30619-9journal_volume
115pub_type
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