scholarly journals 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

2021 ◽  
Vol 11 (16) ◽  
pp. 7329
Author(s):  
Ji-Yong Jung ◽  
Chang-Min Yang ◽  
Jung-Ja Kim
Keyword(s):  
Postural Balance ◽  
Pelvic Tilt ◽  
Mr Damper ◽  
Trunk Muscle ◽  
Linear Actuator ◽  
Pressure Distributions ◽  
Strengthening Exercise ◽  
Dominant Side ◽  
Rehabilitation Exercise ◽  
Dynamic Sitting

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 (p < 0.01). After performing exercise, the body pressure distributions increased on the dominant side while those decreased on the non-dominant side significantly (p < 0.01). In addition, the activities of all trunk muscles on the non-predominant side increased significantly (p < 0.01 and p < 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.

The Relationship Between Trunk Muscle Thickness and Static Postural Balance in Older Adults

2020 ◽  
Vol 28 (2) ◽  
pp. 269-275
Author(s):  
Ece Acar ◽  
Tamer Çankaya ◽  
Serkan Öner
Keyword(s):  
Older Adults ◽  
Postural Balance ◽  
Postural Sway ◽  
Force Plate ◽  
Muscle Thickness ◽  
Trunk Muscle ◽  
Rectus Abdominis ◽  
Trunk Muscles ◽  
The Relationship ◽  
Stability Area

Trunk muscles are required for safety of movement in aging. The authors aimed to investigate the relationship between trunk muscle thickness and the static postural balance in older adults. A total of 31 females and 23 males with a mean age of 73.39 ± 6.09 completed the study. The thickness of the trunk muscles was determined with ultrasound imaging. Postural balance was assessed with force plate. There was a positive weak correlation between right and left upper rectus abdominis muscle thickness and anterior stability area (p < .05, r > .3). The negative and moderate correlation was determined between the left lower rectus abdominis and the perturbated stability sway value (p < .01, r > .5). The increase in trunk muscle thickness in older adults increases the postural stability area and decreases the postural sway especially in the mediolateral direction.

scholarly journals Trunk Muscle Activities and Anterior Pelvic Tilt of Healthy Young Adults Performing the Double-leg Straight-leg Lowering Test

2015 ◽  
Vol 30 (5) ◽  
pp. 741-744
Author(s):  
Makoto SUZUKI ◽  
Hiroto SUZUKI ◽  
Toru NISHIYAMA ◽  
Yuki FURUDATE ◽  
Shinji KAWARAGI ◽  
...  
Keyword(s):  
Young Adults ◽  
Pelvic Tilt ◽  
Trunk Muscle ◽  
Anterior Pelvic Tilt

scholarly journals Foot Strengthening Exercise on Postural Balance and Functional Ability of Foot on Children 6-10 Years Old with Flexible Flatfoot

2020 ◽  
Vol 2 (3) ◽  
pp. 99-107
Author(s):  
Zahra Sativani ◽  
Riza Pahlawi
Keyword(s):  
Functional Ability ◽  
Postural Balance ◽  
Control Group ◽  
P Value ◽  
Strengthening Exercise ◽  
Flexible Flatfoot ◽  
Significant Difference ◽  
Post Test ◽  
The Right ◽  
And Control

The activities of children more involve the foot. One of the common problems in the foot is flexible flatfoot. A disturbance in the process of the formation of the arch foot could result in a deformation of the foot and increases the risk of an injury due to postural balance change. Normally, the arch of the foot formed the first five years for the age range of 2-6 years. The right choices of the intrinsic muscle exercises of the foot can prevent deformation and improve postural balance. This study aimed to discuss the effectiveness of foot strengthening exercise to improving postural balance and functional ability of foot on a flexible flatfoot 6-10 years old. This study was pre-experimental research with two groups of pre-post test design. The subjects of this research were 30 students that had been divided into two groups, case, and control. Each group consists of 15 students selected used purposive sampling method based on the criteria of inclusion that had been set. There was a significant difference after foot strengthening exercise between the case and control group, p-value = 0,000. The foot strengthening exercise could improve the postural balance and functional ability of the foot on a flexible flatfoot 6-10 years old.

Asymmetry in internal oblique muscle thickness: Not the key to a cricket fast bowler's performance

2022 ◽  
pp. 174795412110658
Author(s):  
Benita Olivier ◽  
Franso-Mari Olivier ◽  
Nkazimulo Mnguni ◽  
Oluchukwu Loveth Obiora
Keyword(s):  
Effect Size ◽  
Muscle Thickness ◽  
Trunk Muscle ◽  
Oblique Muscle ◽  
Lumbar Multifidus ◽  
Ball Release ◽  
External Oblique ◽  
Release Speed ◽  
Internal Oblique ◽  
Dominant Side

Purpose Previous studies found that trunk muscle asymmetry may play a role in preventing injury in cricket fast bowlers, while the association with bowling performance has not been investigated. This study aims to describe the side-to-side differences in trunk muscle thickness and determine the association between bowling performance and these side-to-side differences in trunk muscle thickness in adolescent fast bowlers. Methods In this observational cross-sectional study, bowling performance, namely ball release speed and bowling accuracy, was recorded in adolescent fast bowlers. Ultrasound imaging measured external oblique, internal oblique, transversus abdominis and lumbar multifidus muscle thickness. Results Fast bowlers (n = 46) with a mean age of 15.9 (±1.2) years participated. On the non-dominant side, the external oblique and internal oblique at rest were thicker than on the dominant side (external oblique: p = 0.011, effect size = 0.27; internal oblique: p < 0.0001, effect size = 0.40), while the transversus abdominus ( p = 0.72, effect size = 0.19) and lumbar multifidus ( p = 0.668, effect size = 0.04) were symmetrical. Weak correlations existed between bowling performance and the side-to-side differences in the thickness in all muscles, except for two moderate correlations: 1. The smaller the side-to-side difference in absolute thickness of the external oblique when contracted, the faster the ball release speed (Spearman's (ρ) = −0.455, p = 0.002). 2. Also, a smaller side-to-side difference in external oblique contraction ratio (Spearman's (ρ) = −0.495, p = 0.0001) was associated with faster ball release speed. Conclusions No relationship between bowling performance and side-to-side differences in internal oblique muscle thickness could be established, while more symmetrical external oblique muscles may be linked to faster ball release speeds.

scholarly journals Efficacy of abdominal trunk muscles-strengthening exercise using an innovative device in treating chronic low back pain: a controlled clinical trial

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Ryo Kitagawa ◽  
Satoshi Kato ◽  
Satoru Demura ◽  
Yuki Kurokawa ◽  
Kazuya Shinmura ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Physical Function ◽  
Exercise Program ◽  
Trunk Muscle ◽  
Trunk Muscles ◽  
Control Group ◽  
Controlled Clinical Trial ◽  
Low Back ◽  
Muscle Strengthening ◽  
Strengthening Exercise

AbstractExercise is the most common conservative intervention for chronic low back pain (CLBP). We have developed an innovative exercise device for the abdominal trunk muscles that also measures muscle strength in a sitting position. The device, which is easy for patients with CLBP to use, allows for lumbar stabilization exercise under pressure. This study aimed to examine the efficacy of abdominal trunk muscle strengthening using the device in improving CLBP. We conducted a two-group non-randomized controlled clinical trial. CLBP patients were allocated into two groups. The strengthening group underwent a 12-week exercise program that included abdominal trunk muscle strengthening using our device and stretching exercises, while the control group received a 12-week stretching exercise program. The outcome measures included the improvement of the abdominal trunk muscle strength measured by the device, pain intensity of CLBP, physical function, and quality of life (QOL). A total of 40 participants (20 in each group) were analyzed. The strengthening group showed better improvement in the abdominal trunk muscle strength, CLBP, physical function, and QOL than in the control group. In conclusion, the strengthening exercise using the device with easy stretching was effective in improving the strength of the abdominal trunk muscles, pain intensity of CLBP, physical function, and QOL.

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