Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Repetitive work tasks linked to bone damage

11.11.2003


While experts disagree on whether work tasks alone can be the exact cause of work-related musculoskeletal disorders (WMSD) such as carpal tunnel syndrome, a new study by researchers at Temple University proves that a highly repetitive work task, a risk factor for WMSD, does in fact cause bone damage.



"Because multiple factors play a role in the development of WMSD, including work tasks, home activities, and medical conditions such as diabetes or heart disease, we studied work tasks alone to isolate their impact," said Ann Barr, P.T., Ph.D., associate professor of physical therapy at Temple University and the study’s lead author. "This information is critical in helping industry and medicine establish workplace guidelines to prevent WMSD."

The study, "Repetitive, Negligible Force Reaching in Rats Induces Pathological Overloading of Upper Extremity Bones," published in the November 11 issue of the Journal of Bone and Mineral Research, is the third in a series conducted by a group of researchers at Temple University’s College of Health Professions and School of Medicine. "Our studies have shown a direct relationship between repetitive, low force movement and the inflammation of muscles, bone, nerves and connective tissue typical of WMSD," said Barr.


Work-related musculoskeletal disorders, including carpal tunnel syndrome, osteoarthritis and tendonitis, make up the majority (65 percent) of all occupational illnesses and cost industry tens of billions of dollars each year.

To show how the tissue damage caused symptoms of WMSDs, the researchers analyzed behaviors in rats such as decreased movement performance and task avoidance. "These behaviors increased according to the rate of repetition. The higher the repetition, the more severe the symptoms," said Barr.

While the researchers were not surprised by the nature of the tissue damage or the resulting behaviors, they were surprised by how early it began. "Carpal tunnel syndrome usually takes a long time to develop, yet we started seeing evidence of tissue damage within 3-6 weeks. This finding suggests that we may be able to intervene earlier in the development of the disorder and prevent further, more severe damage," said Barr.

Currently, the group is studying the effects of increasing or decreasing repetitive tasks on both tissue and behavior. They have also begun to determine markers of inflammation in patients with known WMSD.

"Future work will examine the long term effects of repetitive motion and the power of ergonomics or medication in preventing or lessening tissue damage," said Barr.

This research is supported by the National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIH), the National Institute of Occupational Safety and Health (CDC), the Foundation for Physical Therapy and Temple University.

In addition to Barr, the research team includes faculty members at Temple University’s College of Health Professions and School of Medicine: Mary Barbe, Ph.D., associate professor of physical therapy; Brian Clark, Ph.D., assistant professor of physical therapy; Steven Popoff, Ph.D., professor and chair of anatomy and cell biology; and Fayez Safadi, Ph.D., assistant professor of anatomy and cell biology.

Eryn Jelesiewicz | EurekAlert!
Further information:
http://www.temple.edu/

More articles from Health and Medicine:

nachricht Penn vet research identifies new target for taming Ebola
12.01.2017 | University of Pennsylvania

nachricht The strange double life of Dab2
10.01.2017 | University of Miami Miller School of Medicine

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

Im Focus: How to inflate a hardened concrete shell with a weight of 80 t

At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).

Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...

Im Focus: Bacterial Pac Man molecule snaps at sugar

Many pathogens use certain sugar compounds from their host to help conceal themselves against the immune system. Scientists at the University of Bonn have now, in cooperation with researchers at the University of York in the United Kingdom, analyzed the dynamics of a bacterial molecule that is involved in this process. They demonstrate that the protein grabs onto the sugar molecule with a Pac Man-like chewing motion and holds it until it can be used. Their results could help design therapeutics that could make the protein poorer at grabbing and holding and hence compromise the pathogen in the host. The study has now been published in “Biophysical Journal”.

The cells of the mouth, nose and intestinal mucosa produce large quantities of a chemical called sialic acid. Many bacteria possess a special transport system...

Im Focus: Newly proposed reference datasets improve weather satellite data quality

UMD, NOAA collaboration demonstrates suitability of in-orbit datasets for weather satellite calibration

"Traffic and weather, together on the hour!" blasts your local radio station, while your smartphone knows the weather halfway across the world. A network of...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

Nothing will happen without batteries making it happen!

05.01.2017 | Event News

 
Latest News

Water - as the underlying driver of the Earth’s carbon cycle

17.01.2017 | Earth Sciences

Satellite-based Laser Measurement Technology against Climate Change

17.01.2017 | Machine Engineering

Studying fundamental particles in materials

17.01.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>