Effectiveness of Combined Stretching and Strengthening Exercise Using Rehabilitation Exercise System with a Linear Actuator and MR Damper on Static and Dynamic Sitting Postural Balance: A Feasibility Study
Postural imbalance induced by prolonged sitting can be improved by exercise therapy. The aim of study was to evaluate the influence of combined stretching and strengthening exercise using rehabilitation exercise system with a linear actuator and MR damper on static and dynamic sitting postural balan...
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MDPI AG
2021-08-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/16/7329 |
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| author | Ji-Yong Jung Chang-Min Yang Jung-Ja Kim |
| author_facet | Ji-Yong Jung Chang-Min Yang Jung-Ja Kim |
| author_sort | Ji-Yong Jung |
| collection | DOAJ |
| description | Postural imbalance induced by prolonged sitting can be improved by exercise therapy. The aim of study was to evaluate the influence of combined stretching and strengthening exercise using rehabilitation exercise system with a linear actuator and MR damper on static and dynamic sitting postural balance. Twelve subjects who sit almost 10 h a day participated in this study. The rehabilitation exercise system with a linear actuator and MR damper was manufactured to provide stretching and strengthening exercise. All subjects were asked to perform an exercise program that was designed to enhance postural balance by stretching the tight muscle and strengthening the weakened muscle. Body pressure distributions were analyzed for mean force and mean pressure using a seat sensor system. Trunk muscle activities were measured by attaching surface electrodes to the thoracic erector spinae, lumbar erector spinae, and lumbar multifidus muscle. All data were divided into two regions (dominant and non-dominant side) under four conditions: no pelvic tilt, lateral pelvic tilt, anterior pelvic tilt, and posterior pelvic tilt. Body pressure distributions and trunk muscle activities were compared between before and after performing exercise under static and dynamic sitting conditions. Both in static and dynamic sitting conditions, there were significant differences in body pressure distributions and trunk muscle activities between the DS and NDS before performing the exercise (<i>p</i> < 0.01). After performing exercise, the body pressure distributions increased on the dominant side while those decreased on the non-dominant side significantly (<i>p</i> < 0.01). In addition, the activities of all trunk muscles on the non-predominant side increased significantly (<i>p</i> < 0.01 and <i>p</i> < 0.05). These results showed that postural balance was improved by decreasing the differences in body pressure distribution and trunk muscle activity between the dominant and non-dominant side after performing exercise. From the results of this study, we concluded that the rehabilitation exercise system with a linear actuator and MR damper is suitable for providing combined stretching and strengthening exercise, and it could be helpful to maintain correct posture by enhancing postural balance during sitting. |
| first_indexed | 2024-03-10T09:02:37Z |
| format | Article |
| id | doaj.art-a23f0c2aead145d6936305e119e177c8 |
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| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T09:02:37Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj.art-a23f0c2aead145d6936305e119e177c82023-11-22T06:39:58ZengMDPI AGApplied Sciences2076-34172021-08-011116732910.3390/app11167329Effectiveness of Combined Stretching and Strengthening Exercise Using Rehabilitation Exercise System with a Linear Actuator and MR Damper on Static and Dynamic Sitting Postural Balance: A Feasibility StudyJi-Yong Jung0Chang-Min Yang1Jung-Ja Kim2Division of Biomedical Engineering, Jeonbuk National University, Jeonju 54896, KoreaDepartment of Healthcare Engineering, Jeonbuk National University, Jeonju 54896, KoreaDivision of Biomedical Engineering, Jeonbuk National University, Jeonju 54896, KoreaPostural imbalance induced by prolonged sitting can be improved by exercise therapy. The aim of study was to evaluate the influence of combined stretching and strengthening exercise using rehabilitation exercise system with a linear actuator and MR damper on static and dynamic sitting postural balance. Twelve subjects who sit almost 10 h a day participated in this study. The rehabilitation exercise system with a linear actuator and MR damper was manufactured to provide stretching and strengthening exercise. All subjects were asked to perform an exercise program that was designed to enhance postural balance by stretching the tight muscle and strengthening the weakened muscle. Body pressure distributions were analyzed for mean force and mean pressure using a seat sensor system. Trunk muscle activities were measured by attaching surface electrodes to the thoracic erector spinae, lumbar erector spinae, and lumbar multifidus muscle. All data were divided into two regions (dominant and non-dominant side) under four conditions: no pelvic tilt, lateral pelvic tilt, anterior pelvic tilt, and posterior pelvic tilt. Body pressure distributions and trunk muscle activities were compared between before and after performing exercise under static and dynamic sitting conditions. Both in static and dynamic sitting conditions, there were significant differences in body pressure distributions and trunk muscle activities between the DS and NDS before performing the exercise (<i>p</i> < 0.01). After performing exercise, the body pressure distributions increased on the dominant side while those decreased on the non-dominant side significantly (<i>p</i> < 0.01). In addition, the activities of all trunk muscles on the non-predominant side increased significantly (<i>p</i> < 0.01 and <i>p</i> < 0.05). These results showed that postural balance was improved by decreasing the differences in body pressure distribution and trunk muscle activity between the dominant and non-dominant side after performing exercise. From the results of this study, we concluded that the rehabilitation exercise system with a linear actuator and MR damper is suitable for providing combined stretching and strengthening exercise, and it could be helpful to maintain correct posture by enhancing postural balance during sitting.https://www.mdpi.com/2076-3417/11/16/7329rehabilitation exercise systembody pressure distributionelectromyographysittingpostural balance |
| spellingShingle | Ji-Yong Jung Chang-Min Yang Jung-Ja Kim Effectiveness of Combined Stretching and Strengthening Exercise Using Rehabilitation Exercise System with a Linear Actuator and MR Damper on Static and Dynamic Sitting Postural Balance: A Feasibility Study Applied Sciences rehabilitation exercise system body pressure distribution electromyography sitting postural balance |
| title | Effectiveness of Combined Stretching and Strengthening Exercise Using Rehabilitation Exercise System with a Linear Actuator and MR Damper on Static and Dynamic Sitting Postural Balance: A Feasibility Study |
| title_full | Effectiveness of Combined Stretching and Strengthening Exercise Using Rehabilitation Exercise System with a Linear Actuator and MR Damper on Static and Dynamic Sitting Postural Balance: A Feasibility Study |
| title_fullStr | Effectiveness of Combined Stretching and Strengthening Exercise Using Rehabilitation Exercise System with a Linear Actuator and MR Damper on Static and Dynamic Sitting Postural Balance: A Feasibility Study |
| title_full_unstemmed | Effectiveness of Combined Stretching and Strengthening Exercise Using Rehabilitation Exercise System with a Linear Actuator and MR Damper on Static and Dynamic Sitting Postural Balance: A Feasibility Study |
| title_short | Effectiveness of Combined Stretching and Strengthening Exercise Using Rehabilitation Exercise System with a Linear Actuator and MR Damper on Static and Dynamic Sitting Postural Balance: A Feasibility Study |
| title_sort | effectiveness of combined stretching and strengthening exercise using rehabilitation exercise system with a linear actuator and mr damper on static and dynamic sitting postural balance a feasibility study |
| topic | rehabilitation exercise system body pressure distribution electromyography sitting postural balance |
| url | https://www.mdpi.com/2076-3417/11/16/7329 |
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