scholarly journals SIAT-WEXv2: A Wearable Exoskeleton for Reducing Lumbar Load during Lifting Tasks

Complexity ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Xinyu Ji ◽  
Dashuai Wang ◽  
Pengfei Li ◽  
Liangsheng Zheng ◽  
Jianquan Sun ◽  
...  
Keyword(s):  
Adaptive Algorithm ◽  
Erector Spinae ◽  
Biomechanical Analysis ◽  
Muscle Strain ◽  
Effective Protection ◽  
Lumbar Muscle ◽  
Wearable Exoskeleton ◽  
Lumbar Load ◽  
Fuzzy Adaptive

Lumbar Exoskeleton, as an important instance of wearable exoskeleton, has broad application prospects in logistics, construction, and other industries. Specifically, in the working scenarios that require long-term and repeated bending and rising movements, active lumbar exoskeleton (ALE) can provide effective protection and flexible assistance to wear’s waist muscles and bones, which will significantly reduce the risk of lumbar muscle strain. How to improve the human-machine coupling and enhance the assistance performance are the main challenges for ALE’s development. Based on the biomechanical analysis of the movement of lifting heavy objects from bottom up, this paper proposes a lightweight but powerful ALE, named as SIAT-WEXv2, which can output maximum assistive force of 28 N. Additionally, we use robust fuzzy adaptive algorithm to improve SIAT-WEXv2’s antidisturbance ability, so that it can provide continuous and supple assistance for wearer. Electromyography (EMG) signals of the lumbar erector spinae (LES) from ten subjects in two experimental cases (with or without SIAT-WEXv2) were collected to evaluate the effectiveness of our new ALE. The experimental results indicate that the reduction of iEMG signal at LES decreased monotonically from 60% ± 5.5% to 40.5% ± 6.5% as the weight of lifting load increased from 0 to 25 kg.

Rehabilitation effect of exercise with soft tissue manipulation in patients with lumbar muscle strain

2017 ◽  
Vol 20 (5) ◽  
pp. 629 ◽  
Author(s):  
W Qi ◽  
H Li ◽  
H Zhang ◽  
S Liu ◽  
Y Wang ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Muscle Strain ◽  
Tissue Manipulation ◽  
Lumbar Muscle

scholarly journals Corrigendum to “SIAT-WEXv2: A Wearable Exoskeleton for Reducing Lumbar Load during Lifting Tasks”

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-1
Author(s):  
Xinyu Ji ◽  
Dashuai Wang ◽  
Pengfei Li ◽  
Liangsheng Zheng ◽  
Jianquan Sun ◽  
...  
Keyword(s):  
Wearable Exoskeleton ◽  
Lumbar Load

NEAR-INFRARED MONITORING OF THE LUMBAR ERECTOR SPINAE MUSCLE IN HEALTHY MEN AND WOMEN DURING STATIC AND DYNAMIC ENDURANCE WORK

2011 ◽  
Vol 04 (02) ◽  
pp. 173-182 ◽  
Author(s):  
RAMMOHAN V. MAIKALA ◽  
YAGESH N. BHAMBHANI
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Erector Spinae ◽  
Arm Cranking ◽  
Static Test ◽  
Physiological Limits ◽  
Volitional Exhaustion ◽  
Lumbar Muscle ◽  
Trunk Extension

Understanding muscle hemodynamics using near-infrared spectroscopy is increasingly evident in the recent spinal disorders-related literature. However, none of these human studies addressed the issue of physiological limits for the lumbar muscle within the same participants during various exercise modes. The purpose of this study is to evaluate physiological limits for the lumbar muscle during dynamic and static endurance tests. On three separate days, 22 healthy men and women performed three endurance protocols (static prone trunk extension, arm cranking, and pushing–pulling) until volitional exhaustion. For each protocol, minimum and maximum oxygenation and blood volume responses from the right lumbar erector spinae were obtained using a continuous dual wavelength near-infrared spectroscopy (Micro-Runman, NIM Inc., PA, USA). Statistical analysis showed that greatest reduction in oxygenation (minimum) were obtained during dynamic exercises: pushing–pulling (2.1 times) and arm cranking (2.03 times) versus static test (P < 0.05). Physiological change (calculated as the difference between maximum during recovery and minimum at the point of volitional exhaustion) during static test was lower [(66–75% for oxygenation) and (34–46% for blood volume)] than dynamic exercises (P < 0.05). Contrary to the theory that sufficient occlusion of blood flow to the lumbar muscle is possible with static trunk extension, it was concluded that a dynamic protocol until volitional exhaustion might be a good alternative in establishing near-infrared spectroscopy-derived physiological limits to the lumbar muscle. Further research is essential to identify an optimal calibration procedure for establishing true hypoxic values for the human lumbar muscle.

Lumbar Muscle Activity During Common Lifts: A Preliminary Study Using Magnetic Resonance Imaging

2013 ◽  
Vol 29 (2) ◽  
pp. 147-154 ◽  
Author(s):  
John M. Mayer ◽  
James E. Graves ◽  
Todd M. Manini ◽  
James L. Nuzzo ◽  
Lori L. Ploutz-Snyder
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Muscle Activity ◽  
Transverse Relaxation Time ◽  
Erector Spinae ◽  
Future Research ◽  
Resonance Imaging ◽  
Lumbar Muscle ◽  
Preliminary Study ◽  
Magnetic Resonance Imaging Mri

The purpose of this preliminary study was to assess lumbar multifidus, erector spinae, and quadratus lum-borum muscle activity during lifts as measured by changes in transverse relaxation time (T2) from magnetic resonance imaging (MRI). Thirteen healthy adults performed dynamic squat, stoop, and asymmetric stoop lifts at a standard load, with each lift followed by MRI. Increase in T2 for the multifidus and erector spinae was greater for the stoop than squat. No difference in T2 increase was noted between the multifidus and erector spinae for the squat or stoop. Increase in T2 for the contralateral multifidus was less for the asymmetric stoop than stoop. Future research using MRI and other biomechanical techniques is needed to fully characterize lumbar muscle activity during lifts for various populations, settings, postures, and loads.

scholarly journals Postępowanie administracyjne w sprawie czasowego odebrania zwierzęcia

2019 ◽  
pp. 253-263
Author(s):  
Agnieszka Rotkiewicz-Szarnowska
Keyword(s):  
Competent Authority ◽  
Criminal Court ◽  
Criminal Proceedings ◽  
Effective Protection ◽  
Judicial Decisions ◽  
Administrative Body ◽  
Administrative Courts ◽  
Administrative Proceedings

The main purpose of the article is to present the administrative proceedings concerning the temporary taking the animal from the owner or the keeper of the animal. The author notices that the institution of the temporary taking an animal raised great interest in literature and judicial decisions of the administrative courts. The legislator decided that the competent authority may take an animal from the owner or the keeper of an animal because of the inhumane treatment of this animal. Such decision is provisional because in the long term, the criminal court should take the fnal decision in the criminal proceedings. The author shares the opinion that this institution aims to ensure the effective protection from the inhumane treatment of animals, taking account of their specifc needs. The considerations concerning the temporary taking an animal lead to the conclusion that the administrative body should obey the principles on the effective investigation and documentation of cruel and inhumane treatment of animals.

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