Differences in regional and global lumbar angle during slumped sitting and upright sitting among global three subgroups

2021 ◽  
pp. 1-9
Author(s):  
Sun-Shil Shin ◽  
Won-Gyu Yoo
Keyword(s):  
Lumbar Lordosis ◽  
Low Back ◽  
Sitting Posture ◽  
Inertial Measurement ◽  
Potential Source ◽  
Asymptomatic Volunteers ◽  
Measurement Units ◽  
Lumbar Kyphosis ◽  
Flat Back ◽  
The Relationship

OBJECTIVE: The purpose of this study was to investigate differences in regional lumbar lordosis (RLL) and global lumbar lordosis (GLL) angle during slumped sitting and upright sitting among three global subgroups. METHODS: A total of 48 young asymptomatic volunteers stood in a comfortable posture, sat upright, and sat in a slumped position for 5 seconds, with inertial measurement units attached to the T10, L3, and S2 vertebrae. According to standing measurement, the participants were categorized into flat-back (GLL < 20∘), normal lordosis (20∘⩽ GLL < 30∘), and hyper-lordosis (30∘⩽ GLL < 40∘) groups. RESULTS: Both the GLL and RLL in the flat-back group were reduced lumbar lordosis in the upright sitting posture and increased lumbar kyphosis in the slumped sitting postures compared to the other groups (p< 0.05), but the range of motion during the transition from upright sitting to slumped sitting was lower than that of the normal and hyper-lordosis groups (p< 0.05). GLL in standing was a moderate correlation with GLL and RLL during upright sitting (p< 0.05). However, there was a strong correlation between GLL and RLL kinematics during upright and slumped sitting (p< 0.05). CONCLUSIONS: Flat-back posture is a potential source of low back pain during both upright and slumped sitting compared to the normal and hyper-lordosis groups. Posture measurements in a standing and sitting position conducted to assess lordosis should consider the relationship between GLL and RLL.

scholarly journals Spinal and Pelvic Alignment of Sitting Posture Associated with Smartphone Use in Adolescents with Low Back Pain

2021 ◽  
Vol 18 (16) ◽  
pp. 8369
Author(s):  
Tae-sung In ◽  
Jin-hwa Jung ◽  
Kyoung-sim Jung ◽  
Hwi-young Cho
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Lumbar Lordosis ◽  
Sitting Time ◽  
Low Back ◽  
Thoracolumbar Kyphosis ◽  
Sitting Posture ◽  
Prolonged Sitting ◽  
Significant Difference ◽  
Smartphone Use

This study aimed to assess the association between smartphone use in the sitting posture and changes in thoracolumbar kyphosis, lumbar lordosis, and pelvic asymmetry in adolescents with low back pain (LBP). Twenty-five adolescents with LBP and 25 healthy adolescents participated in this study. They were instructed to sit on a height-adjustable chair with their hips and knees bent at 90° for 30 min in their usual sitting postures. Thoracolumbar kyphosis, lumbar lordosis, and pelvic asymmetry were measured using a three-dimensional motion capture system. Thoracolumbar kyphosis and lumbar lordosis increased after 30 min of sitting compared to the baseline. In both groups, thoracic kyphosis and lumbar lordosis angle increased with increasing sitting time. Compared to healthy adolescents, adolescents with LBP presented greater thoracolumbar kyphosis and lumbar lordosis after prolonged sitting. Pelvic asymmetry showed no significant difference between the sitting time and groups. Using a smartphone during prolonged sitting may lead to a slumped posture; these associations were more pronounced in adolescents with LBP.

scholarly journals Seated Lateral X-ray Is a Better Stress Radiograph of the Lumbar Spine Compared to Standing Flexion

2020 ◽  
pp. 219256822093952 ◽  
Author(s):  
J. Alex Sielatycki ◽  
Tyler Metcalf ◽  
Marissa Koscielski ◽  
Clinton J. Devin ◽  
Scott Hodges
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Lumbar Spine ◽  
Lumbar Lordosis ◽  
Future Research ◽  
Low Back ◽  
X Rays ◽  
X Ray ◽  
Lumbar Kyphosis ◽  
Segmental Lordosis

Study Design: Prospective lumbar radiograph analysis. Objective: To compare changes in lumbar lordosis in standing flexion versus seated lateral radiographs. Methods: Standing lateral, standing flexion, and seated lateral X-rays of the lumbar spine were obtained in patients presenting with low back pain. Trauma, tumor, and revision cases were excluded. Changes in global lumbar as well as segmental lordosis were measured in each position. Results: Seventy adult patients were reviewed. Overall, the greatest changes in lordosis were seen at L4-S1 in both the seated and flexion X-rays (12.5° and 6.3°, respectively). Greater kyphosis was seen in seated versus flexion X-rays (21.6° vs 15.8°); changes in lordosis from L1-L3 were similar in both positions, with little change seen at these levels (approximately 5° to 7°). On subgroup analysis, these differences were magnified in analyzing only patients that moved at least 20° globally, and there were no significant differences between sitting and flexion in “stiff” patients that moved less than 20° globally. Conclusion: Greater lumbar kyphosis was seen in the seated position compared to standing flexion, especially from L4-S1. Given these results we suggest the use of seated lateral X-rays to dynamically assess the lumbar spine. These findings may also guide future research into the mechanism and clinical relevance of a stiff versus mobile lumbar spine, as well as into the sensitivity of seated X-rays in detecting instability.

The relationship between lumbar lordosis angle and low back pain in individuals with transfemoral amputation

2018 ◽  
Vol 43 (2) ◽  
pp. 227-232 ◽  
Author(s):  
Mary E Matsumoto ◽  
Joseph M Czerniecki ◽  
Ali Shakir ◽  
Pradeep Suri ◽  
Michael Orendurff ◽  
...  
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Standard Deviation ◽  
Inclination Angle ◽  
Lumbar Lordosis ◽  
Lateral View ◽  
Low Back ◽  
Significant Difference ◽  
Transfemoral Amputees ◽  
The Relationship

Background: Low back pain is a common secondary disabling condition in the transfemoral amputee population. Transfemoral amputees are at risk of excessive lumbar lordosis; it has been suggested that increased lumbar lordosis may be associated with low back pain. However, the relationship between lumbar lordosis angle and low back pain has not yet been studied in this population. Objective: To determine whether the extent of lumbar lordosis is associated with low back pain in transfemoral amputees. Study design: Case–control observational study. Methods: Participants included eight transfemoral amputees without low back pain and nine transfemoral amputees with low back pain. Etiology of amputation was primarily trauma. All participants underwent lateral view radiographs of the lumbar spine, from which lumbar lordosis angle and sacral inclination angle were measured. Results: Lumbar lordosis angle mean ± standard deviation was 46.1° ± 12.4° in participants with low back pain and 51.0° ± 12.6° in those without. Sacral inclination angle mean ± standard deviation was 38.3° ± 8.7° in participants with low back pain and 39.1° ± 7.5° in those without. There was no significant difference in lumbar lordosis angle or sacral inclination angle between participants with and without low back pain. Conclusion: This study suggests that increased lumbar lordosis angle and sacral inclination angle are not significantly associated with low back pain in transfemoral amputees of a primarily traumatic etiology. Clinical relevance Low back pain (LBP) is a common, disabling condition in transfemoral amputees. In the clinical setting, increased lumbar lordosis is implicated in LBP. This study does not support an association between increased lumbar lordosis and LBP; further study is needed to understand the increased prevalence of LBP in this population.

scholarly journals The Effect of Footwear, Running Speed, and Location on the Validity of Two Commercially Available Inertial Measurement Units During Running

2021 ◽  
Vol 3 ◽  
Author(s):  
Christopher Napier ◽  
Richard W. Willy ◽  
Brett C. Hannigan ◽  
Ryan McCann ◽  
Carlo Menon
Keyword(s):  
Distal Tibia ◽  
Positive Association ◽  
Inertial Measurement Units ◽  
Running Speed ◽  
Inertial Measurement ◽  
Vertical Loading ◽  
Positive Acceleration ◽  
Measurement Units ◽  
The Right ◽  
The Relationship

Introduction: Most running-related injuries are believed to be caused by abrupt changes in training load, compounded by biomechanical movement patterns. Wearable technology has made it possible for runners to quantify biomechanical loads (e.g., peak positive acceleration; PPA) using commercially available inertial measurement units (IMUs). However, few devices have established criterion validity. The aim of this study was to assess the validity of two commercially available IMUs during running. Secondary aims were to determine the effect of footwear, running speed, and IMU location on PPA.Materials and Methods: Healthy runners underwent a biomechanical running analysis on an instrumented treadmill. Participants ran at their preferred speed in three footwear conditions (neutral, minimalist, and maximalist), and at three speeds (preferred, +10%, −10%) in the neutral running shoes. Four IMUs were affixed at the distal tibia (IMeasureU-Tibia), shoelaces (RunScribe and IMeasureU-Shoe), and insole (Plantiga) of the right shoe. Pearson correlations were calculated for average vertical loading rate (AVLR) and PPA at each IMU location.Results: The AVLR had a high positive association with PPA (IMeasureU-Tibia) in the neutral and maximalist (r = 0.70–0.72; p ≤ 0.001) shoes and in all running speed conditions (r = 0.71–0.83; p ≤ 0.001), but low positive association in the minimalist (r = 0.47; p &lt; 0.05) footwear condition. Conversely, the relationship between AVLR and PPA (Plantiga) was high in the minimalist (r = 0.75; p ≤ 0.001) condition and moderate in the neutral (r = 0.50; p &lt; 0.05) and maximalist (r = 0.57; p &lt; 0.01) footwear. The RunScribe metrics demonstrated low to moderate positive associations (r = 0.40–0.62; p &lt; 0.05) with AVLR across most footwear and speed conditions.Discussion: Our findings indicate that the commercially available Plantiga IMU is comparable to a tibia-mounted IMU when acting as a surrogate for AVLR. However, these results vary between different levels of footwear and running speeds. The shoe-mounted RunScribe IMU exhibited slightly lower positive associations with AVLR. In general, the relationship with AVLR improved for the RunScribe sensor at slower speeds and improved for the Plantiga and tibia-mounted IMeasureU sensors at faster speeds.

scholarly journals Effects of the Multidimensional Treatment on Pain, Disability, and Sitting Posture in Patients with Low Back Pain: A Randomized Controlled Trial

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Tae-Sung In ◽  
Jin-Hwa Jung ◽  
Kyoung-Sim Jung ◽  
Hwi-Young Cho
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Lumbar Lordosis ◽  
Controlled Trial ◽  
Core Stability ◽  
Low Back ◽  
Thoracolumbar Kyphosis ◽  
Sitting Posture ◽  
Randomized Controlled ◽  
Pain Disability

The purpose of this study was to investigate the effects of multidimensional approach model on the pain, disability, and sitting posture in patients with nonspecific low back pain (LBP). Sixty LBP patients were recruited and were randomly divided into two groups: multidimensional treatment (MT) group (n = 30) and unimodal treatment (UT) group (n = 30). All participants underwent 48 sessions of treatment (40 min/session, two sessions per day, 2 days per week) for 12 weeks. The MT group conducted a core stability exercise twice a day and additionally provided training on pain principles and management methods. The UT group only performed a core stability exercise twice a day. The visual analog scale (VAS) and Oswestry Disability index (ODI) were used to measure pain intensity and disability. Thoracolumbar kyphosis and lumbar lordosis in the sitting position were measured using a motion capture system. After training, the pain and disability in the MT group improved significantly greater than the UT group ( p < 0.05 ). In the MT group, the pain relief effect persisted 3 months after the end of training. Thoracolumbar kyphosis and lumbar lordosis in the MT group were significantly improved compared to the UT group ( p < 0.05 ). Thus, MT combined with core stability exercise may be used to improve the pain, disability, and sitting posture in patients with LBP.

Lumbar Sagittal Plane Spinal Curvature and Junior-Level Cricket Players

2016 ◽  
Vol 21 (2) ◽  
pp. 47-52 ◽  
Author(s):  
Mark D. Hecimovich ◽  
Norman J. Stomski
Keyword(s):  
Lumbar Lordosis ◽  
Sagittal Plane ◽  
Spinal Curvature ◽  
Back Injury ◽  
Low Back ◽  
Lower Back ◽  
Significant Difference ◽  
Measurement Results ◽  
Lower Back Injury ◽  
The Relationship

Lumbar lordosis may be a risk factor for injury in junior-level athletes involved in sport which requires excessive amounts of extension. The purpose of this study was to examine the relationship between lumbar lordosis in junior-level cricket players with and without previous low back injury. Results demonstrated a statistically significant difference in lumbar lordosis between the two groups (LBI = 42.53 ± 9.10°; no LBI = 30.33 ± 8.36°; p < .01), with previous lower back injury accounting for 32% variation in lumbar lordosis (p < .01). The results indicate lumbar lordosis may be an issue worth examining in those athletes who partake in sports which have high levels of extension; but, as there is no accepted definition to lumbar postures, it is difficult to accurately interpret measurement results.

scholarly journals The relationship between low back pain and movements in prolonged sitting posture. Literature review

2016 ◽  
Vol 32 (1) ◽  
pp. 153-173 ◽  
Author(s):  
Fernanda Maradei García ◽  
◽  
Leonardo Quintana Jiménez ◽  
Lope H Barrero ◽  
◽  
...  
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Literature Review ◽  
Low Back ◽  
Sitting Posture ◽  
Prolonged Sitting ◽  
The Relationship
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