Rezvan Azimi, Behrouz Abdoli, Mohammad Ali Sanjari, Reza Khosrowabadi
{"title":"双任务范式中姿势协调的可变性","authors":"Rezvan Azimi, Behrouz Abdoli, Mohammad Ali Sanjari, Reza Khosrowabadi","doi":"10.1080/00222895.2023.2226630","DOIUrl":null,"url":null,"abstract":"<p><p>Postural control is influenced by cognition. In most studies, variability of motor output has been considered regardless of variability in patterns of joint coordination. Uncontrolled manifold framework has been applied to decompose the joint's variance in two components. The first component leaves position of the center of mass in anterior-posterior direction (CoM<sub>AP</sub>) unchanged (V<sub>UCM</sub>) while the second component is in charge of variations of CoM (V<sub>ORT</sub>). In this study, 30 healthy young volunteers were recruited. The experimental protocol consisted of three random conditions: quiet standing on a narrow wooden block without a cognitive task (NB), quiet standing on a narrow wooden block with an easy cognitive task (NBE), and quiet standing on a narrow wooden block with a difficult cognitive task (NBD). Results showed that CoM<sub>AP</sub> sway in NB condition was higher than both NBE and NBD conditions (<i>p</i> = .001). V<sub>ORT</sub> in NB condition was higher than NBE and NBD conditions (<i>p</i> = .003). V<sub>ORT</sub> in NB condition was higher than NBE and NBD conditions (<i>p</i> = .003). V<sub>UCM</sub> was unchanged in all conditions (<i>p</i> = 1.00) and synergy index in NB condition was smaller than NBE and NBD conditions (<i>p</i> = .006). These results showed that postural synergies increased under dual-task conditions.</p>","PeriodicalId":50125,"journal":{"name":"Journal of Motor Behavior","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Variability of Postural Coordination in Dual-Task Paradigm.\",\"authors\":\"Rezvan Azimi, Behrouz Abdoli, Mohammad Ali Sanjari, Reza Khosrowabadi\",\"doi\":\"10.1080/00222895.2023.2226630\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Postural control is influenced by cognition. In most studies, variability of motor output has been considered regardless of variability in patterns of joint coordination. Uncontrolled manifold framework has been applied to decompose the joint's variance in two components. The first component leaves position of the center of mass in anterior-posterior direction (CoM<sub>AP</sub>) unchanged (V<sub>UCM</sub>) while the second component is in charge of variations of CoM (V<sub>ORT</sub>). In this study, 30 healthy young volunteers were recruited. The experimental protocol consisted of three random conditions: quiet standing on a narrow wooden block without a cognitive task (NB), quiet standing on a narrow wooden block with an easy cognitive task (NBE), and quiet standing on a narrow wooden block with a difficult cognitive task (NBD). Results showed that CoM<sub>AP</sub> sway in NB condition was higher than both NBE and NBD conditions (<i>p</i> = .001). V<sub>ORT</sub> in NB condition was higher than NBE and NBD conditions (<i>p</i> = .003). V<sub>ORT</sub> in NB condition was higher than NBE and NBD conditions (<i>p</i> = .003). V<sub>UCM</sub> was unchanged in all conditions (<i>p</i> = 1.00) and synergy index in NB condition was smaller than NBE and NBD conditions (<i>p</i> = .006). These results showed that postural synergies increased under dual-task conditions.</p>\",\"PeriodicalId\":50125,\"journal\":{\"name\":\"Journal of Motor Behavior\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2024-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Motor Behavior\",\"FirstCategoryId\":\"102\",\"ListUrlMain\":\"https://doi.org/10.1080/00222895.2023.2226630\",\"RegionNum\":4,\"RegionCategory\":\"心理学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2023/7/10 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q4\",\"JCRName\":\"NEUROSCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Motor Behavior","FirstCategoryId":"102","ListUrlMain":"https://doi.org/10.1080/00222895.2023.2226630","RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2023/7/10 0:00:00","PubModel":"Epub","JCR":"Q4","JCRName":"NEUROSCIENCES","Score":null,"Total":0}
Variability of Postural Coordination in Dual-Task Paradigm.
Postural control is influenced by cognition. In most studies, variability of motor output has been considered regardless of variability in patterns of joint coordination. Uncontrolled manifold framework has been applied to decompose the joint's variance in two components. The first component leaves position of the center of mass in anterior-posterior direction (CoMAP) unchanged (VUCM) while the second component is in charge of variations of CoM (VORT). In this study, 30 healthy young volunteers were recruited. The experimental protocol consisted of three random conditions: quiet standing on a narrow wooden block without a cognitive task (NB), quiet standing on a narrow wooden block with an easy cognitive task (NBE), and quiet standing on a narrow wooden block with a difficult cognitive task (NBD). Results showed that CoMAP sway in NB condition was higher than both NBE and NBD conditions (p = .001). VORT in NB condition was higher than NBE and NBD conditions (p = .003). VORT in NB condition was higher than NBE and NBD conditions (p = .003). VUCM was unchanged in all conditions (p = 1.00) and synergy index in NB condition was smaller than NBE and NBD conditions (p = .006). These results showed that postural synergies increased under dual-task conditions.
期刊介绍：
The Journal of Motor Behavior, a multidisciplinary journal of movement neuroscience, publishes articles that contribute to a basic understanding of motor control. Articles from different disciplinary perspectives and levels of analysis are encouraged, including neurophysiological, biomechanical, electrophysiological, psychological, mathematical and physical, and clinical approaches. Applied studies are acceptable only to the extent that they provide a significant contribution to a basic issue in motor control. Of special interest to the journal are those articles that attempt to bridge insights from different disciplinary perspectives to infer processes underlying motor control. Those approaches may embrace postural, locomotive, and manipulative aspects of motor functions, as well as coordination of speech articulators and eye movements. Articles dealing with analytical techniques and mathematical modeling are welcome.
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