University of Primorska, Faculty of Health Sciences, Polje 42, SI-6310 Izola, Slovenia; University of Primorska, Andrej Marušič Institute, Muzejski trg 2, SI-6000 Koper, Slovenia; InnoRenew CoE, Human Health Department, Livade 6, SI-6310 Izola, Slovenia; S2P, Science to Practice, Ltd., Laboratory for Motor Control and Motor Behavior, Tehnološki park 19, SI-1000 Ljubljana, Slovenia.
University of Primorska, Faculty of Health Sciences, Polje 42, SI-6310 Izola, Slovenia; University of Primorska, Andrej Marušič Institute, Muzejski trg 2, SI-6000 Koper, Slovenia.
Gait Posture. 2022 Feb;92:60-64. doi: 10.1016/j.gaitpost.2021.11.020. Epub 2021 Nov 19.
Postural sway during quiet standing has been shown as a useful task to assess risk of falling in older adults. While the risk of falling is consistently reported to be higher in older females than males, the sex-related differences in postural sway are not consistent across the studies.
What are the effects of age and sex on postural sway during quiet standing during different stance conditions?
We examined the effects of age (40 young and 34 older adults), sex (37 males and 37 females), and their interaction on the postural sway during different stance conditions. We compared the center of pressure (CoP) velocity, amplitude and frequency during parallel (eyes open and eyes closed) and semi-tandem (eyes open) stances.
Our results suggest that postural sway is similar between sexes in young participants, while older males exhibit larger postural sway than older female participants (10/21 outcomes). Older female participants exhibited lower CoP amplitude (but larger total and anterior-posterior CoP velocity) compared to young female participants. We also found that the increase in the postural sway with increasing task difficulty is more pronounced in older vs. young adults.
This study shows that ageing-related changes in postural sway are sex- and task-specific. Researchers and clinicians need to be aware of these effects when comparing groups or monitoring changes in time.
在安静站立时的姿势摆动已被证明是评估老年人跌倒风险的有用任务。虽然女性老年人跌倒的风险一直高于男性，但在不同研究中，姿势摆动的性别差异并不一致。
年龄和性别对不同站立条件下安静站立时的姿势摆动有什么影响？
我们研究了年龄（40 名年轻和 34 名年长成年人）、性别（37 名男性和 37 名女性）及其相互作用对不同站立条件下的姿势摆动的影响。我们比较了在平行（睁眼和闭眼）和半并立（睁眼）姿势下的压力中心（CoP）速度、幅度和频率。
我们的结果表明，在年轻参与者中，姿势摆动在两性之间相似，而年长男性的姿势摆动大于年长女性（10/21 项结果）。与年轻女性参与者相比，年长女性参与者的 CoP 幅度较低（但总 CoP 和前后 CoP 速度较大）。我们还发现，随着任务难度的增加，姿势摆动的增加在老年人中比在年轻人中更为明显。
这项研究表明，与衰老相关的姿势摆动变化具有性别和任务特异性。在比较组或监测随时间的变化时，研究人员和临床医生需要意识到这些影响。
