Low Back Pain Suppresses Preparatory and Triggered Upper-Limb Activation After Sudden Upper-Limb Loading

Spine ◽  
2007 ◽  
Vol 32 (5) ◽  
pp. E150-E155 ◽  
Author(s):  
Ville Leinonen ◽  
Minna Airaksinen ◽  
Simo Taimela ◽  
Markku Kankaanpää ◽  
Ari Kukka ◽  
...  
2009 ◽  
Vol 4 (1_suppl) ◽  
pp. 129-148 ◽  
Author(s):  
David M Lindsay ◽  
Theo H Versteegh ◽  
Anthony A Vandervoort

Although the sport of golf may be mistakenly perceived as a benign physical activity, there are in fact patterns of problems such as strains to the upper limb and low-back pain that have the potential to interfere with the professional golfer's livelihood and recreational golfer's enjoyment. In this article, a summary of the literature has been provided outlining the nature and extent of common musculoskeletal injuries that golfers deal with as well as some of the risk factors that may increase injury susceptibility. A detailed overview of prevention strategies to minimize the risk of suffering a golf injury has also been provided. Since many injuries arise from poor swing biomechanics, taking instruction with a knowledgeable golf instructor can be an important first step towards injury prevention. However, if a golfing client already has an injury which originated or is aggravated by playing or practicing, then the personalized help of a physician or physiotherapist experienced in golf biomechanics is also warranted. Proper attention to prevention will ensure a lifetime of enjoyable golf “par”ticipation.


2009 ◽  
Vol 3 (6) ◽  
pp. 716-722 ◽  
Author(s):  
Eiichi Yagi ◽  
◽  
Daisuke Harada ◽  
Masaaki Kobayashi ◽  
◽  
...  

This paper discusses upper-limb power-assist control using a pneumatic rotary actuator to support shoulder movement and an air cylinder to support elbow movement by agricultural workers lifting a 30 kg rice bag without inducing low back pain. Surface electromyogram (EMG) signals are used as trigger signals, joint support torque is calculated based on the antigravity term of necessary joint torque, estimated based on the dynamics of a human approximated link model. Experimental results demonstrate the effectiveness of proposed power-assist control.


Sebatik ◽  
2021 ◽  
Vol 25 (1) ◽  
Author(s):  
Nur Miswari ◽  
Lina Aulia ◽  
Rizqi Wahyudi

Aktivitas penanganan bahan secara manual masih banyak kita temui dalam kehidupan sehari-hari saat melaksanakan sebuah pekerjaan. Ketidak ergonomis pekerjaan manual material handling (MMH) akan menimbulkan risiko keluhan muskuloskeletal disorder (MSDs). Selain dapat menyebabkan risiko-risiko muskuloskeletal, pekerjaan MMH dapat meningkatkan kelelahan otot lokal akibat banyaknya kontraksi otot yang terlibat dan low back pain (LBP). Aktivitas mengangkat dan membawa galon air secara pada gedung bertingkat tentu menjadi tugas yang cukup berat. Penelitian ini dilakukan terhadap aktivitas MMH mengangkat dan membawa air kemasan galon dengan menggunakan metode Rapid Upper Limb Assessment (RULA) untuk menilai postur aktivitas MMH dan  mengklasifikasikan dalam tingkatan risiko. Untuk analisis tekanan pada sendi antara lumbal lima dan sacral pertama (L5/S1) dilakukan dengan software prediksi kekuatan dan ketahanan statis tubuh. Hasil yang diperoleh dari penilaian postur dengan metode RULA aktivitas MMH pengangkatan dan membawa galon air mineral secara manual pada gedung bertingkat adalah nilai 7 (tujuh) yang masuk dalam kategori risiko tinggi sehingga perlu adanya perbaikan segera. Hasil analisis gaya tekan L5/S1 pada sikap kerja MMH yaitu sebesar 1644N untuk posisi angkat dan 2475N saat membawa. Usulan perbaikan yaitu posisi tubuh agar tetap tegak, mengurangi sudut yang terbentuk agar memperkecil momen gaya, menggunakan alat bantu material handling lifting secara mekanis maupun elektrik agar pekerjaan MMH tidak menggunakan kekuatan operator yang berlebihan baik saat mengangkat maupun membawa beban.


Author(s):  
Julia Smedley ◽  
Finlay Dick ◽  
Steven Sadhra

Low back pain 254Work-related upper limb disorders 1 256Work-related upper limb disorders 2 258Osteoarthritis of the hip 260Bursitis 262• LBP has a lifetime prevalence of 60–80%, point prevalence of 15–40%, and annual incidence of 5%. It is:• the second most common cause of work-related ill health (prevalence 207 000, annual incidence 51 000)...


2020 ◽  
Vol 9 (1) ◽  
pp. 21-25 ◽  
Author(s):  
Trio Yonathan Teja Kusuma

The metal casting industry, Nitikan is a micro business whose production process is carried out manually. The equipment used is simple and without considering the user's health. This can be seen in the product finishing process that uses a sanding machine. The equipment is not designed according to the user's posture so the operator bends in doing work movements, of course this is very risky to experience lower back pain injuries. This study aims to analyze the work activities of the finishing process using the Rapid Entire Body Assessment (REBA) and Rapid Upper Limb Assessment (RULA) approach and design work tools that can be applied to improve work posture. The results of data processing and analysis obtained a Rapid Entire Body Assessment score on a sandpaper machine single head of 5 and a Rapid Upper Limb Assessment score of 4, the score indicates that the work position has the potential to experience a risk of low back pain, so there must be an improvement in work posture. Work posture improvement is done by designing a tool in the form of a sandpaper machine that takes into account ergonomic dimensions to reduce the risk of lower back injury. The final result after the improvement is obtained Rapid Entire Body Assessment score of 3 and Rapid Upper Limb Assessment score of 4. This shows that the risk of lower back injuries can be minimized.


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