Sirinant Channak , Erwin M. Speklé , Allard J. van der Beek , Prawit Janwantanakul
{"title":"两种动态座垫对办公室工作人员姿势转换、躯干肌肉激活和脊柱不适的影响","authors":"Sirinant Channak , Erwin M. Speklé , Allard J. van der Beek , Prawit Janwantanakul","doi":"10.1016/j.apergo.2024.104337","DOIUrl":null,"url":null,"abstract":"<div><p>We investigated the effect of two dynamic seat cushions on postural shift, trunk muscle activation and spinal discomfort. In this repeated-measures study, 30 healthy office workers were randomly assigned to a sequence of three conditions: sitting on a dynamic seat cushion-A, cushion-B and control (no seat cushion). The two dynamic seat cushions had different inflation levels. Participants typed a standard text for an hour and were monitored for postural shift by using a seat pressure mat, transversus abdominis/internal oblique and lumbar multifidus muscles activity by using surface EMG, spinal discomfort by using Borg's CR-10 scale. Two-way repeated ANOVAs showed no statistically significant interaction effects between condition and time on postural shift and muscle activation. Post hoc Bonferroni tests showed that postural shifts and lumbar multifidus activation during sitting on cushion-A were significantly higher (p < 0.01) than in the control and cushion-B conditions. Both cushions reduced spinal discomfort, compared to the control condition (p < 0.05).</p></div>","PeriodicalId":55502,"journal":{"name":"Applied Ergonomics","volume":"120 ","pages":"Article 104337"},"PeriodicalIF":3.1000,"publicationDate":"2024-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of two dynamic seat cushions on postural shift, trunk muscle activation and spinal discomfort in office workers\",\"authors\":\"Sirinant Channak , Erwin M. Speklé , Allard J. van der Beek , Prawit Janwantanakul\",\"doi\":\"10.1016/j.apergo.2024.104337\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>We investigated the effect of two dynamic seat cushions on postural shift, trunk muscle activation and spinal discomfort. In this repeated-measures study, 30 healthy office workers were randomly assigned to a sequence of three conditions: sitting on a dynamic seat cushion-A, cushion-B and control (no seat cushion). The two dynamic seat cushions had different inflation levels. Participants typed a standard text for an hour and were monitored for postural shift by using a seat pressure mat, transversus abdominis/internal oblique and lumbar multifidus muscles activity by using surface EMG, spinal discomfort by using Borg's CR-10 scale. Two-way repeated ANOVAs showed no statistically significant interaction effects between condition and time on postural shift and muscle activation. Post hoc Bonferroni tests showed that postural shifts and lumbar multifidus activation during sitting on cushion-A were significantly higher (p < 0.01) than in the control and cushion-B conditions. Both cushions reduced spinal discomfort, compared to the control condition (p < 0.05).</p></div>\",\"PeriodicalId\":55502,\"journal\":{\"name\":\"Applied Ergonomics\",\"volume\":\"120 \",\"pages\":\"Article 104337\"},\"PeriodicalIF\":3.1000,\"publicationDate\":\"2024-06-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Ergonomics\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0003687024001145\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, INDUSTRIAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Ergonomics","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0003687024001145","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, INDUSTRIAL","Score":null,"Total":0}
引用次数: 0
摘要
我们研究了两种动态座垫对姿势转换、躯干肌肉激活和脊柱不适的影响。在这项重复测量研究中,30 名健康的上班族被随机分配到三个条件序列中:坐在动态坐垫-A、坐垫-B 和对照组(无坐垫)上。两种动态座垫的充气程度不同。参与者在一小时内输入标准文本,并使用座垫压力监测姿势变化,使用表面肌电图监测腹横肌/腹内斜肌和腰部多裂肌的活动,使用博格的 CR-10 量表监测脊柱不适感。双向重复方差分析显示,条件和时间对姿势转换和肌肉激活的交互作用在统计学上没有显著影响。事后的 Bonferroni 检验表明,坐垫 A 上的姿势移动和腰部多裂肌激活明显高于对照组和坐垫 B 上的姿势移动和腰部多裂肌激活(p < 0.01)。与对照组相比,两个坐垫都减轻了脊柱不适感(p < 0.05)。
Effect of two dynamic seat cushions on postural shift, trunk muscle activation and spinal discomfort in office workers
We investigated the effect of two dynamic seat cushions on postural shift, trunk muscle activation and spinal discomfort. In this repeated-measures study, 30 healthy office workers were randomly assigned to a sequence of three conditions: sitting on a dynamic seat cushion-A, cushion-B and control (no seat cushion). The two dynamic seat cushions had different inflation levels. Participants typed a standard text for an hour and were monitored for postural shift by using a seat pressure mat, transversus abdominis/internal oblique and lumbar multifidus muscles activity by using surface EMG, spinal discomfort by using Borg's CR-10 scale. Two-way repeated ANOVAs showed no statistically significant interaction effects between condition and time on postural shift and muscle activation. Post hoc Bonferroni tests showed that postural shifts and lumbar multifidus activation during sitting on cushion-A were significantly higher (p < 0.01) than in the control and cushion-B conditions. Both cushions reduced spinal discomfort, compared to the control condition (p < 0.05).
期刊介绍:
Applied Ergonomics is aimed at ergonomists and all those interested in applying ergonomics/human factors in the design, planning and management of technical and social systems at work or leisure. Readership is truly international with subscribers in over 50 countries. Professionals for whom Applied Ergonomics is of interest include: ergonomists, designers, industrial engineers, health and safety specialists, systems engineers, design engineers, organizational psychologists, occupational health specialists and human-computer interaction specialists.