fatigue

Friday Five 4/21/17

Quin Bond, CEAS IIILeave a comment

The Friday Five is a set of five links that I have come across this week that pertain to ergonomics, occupational health, safety, human performance, or human factors.  For whatever reason, I found them interesting, but they are provided with minimal or no commentary and are not meant to be endorsement for a given product or research paper.

These links were generated during a PubMed search on the terms: ergonomics and obesity and using the new relevance button.

Cavuato and Nussbaum examined the effects of age and obesity on the performance of upper extremity activities.  They noted impairments in task performance due to fatigue, loss of strength, and discomfort during task performance related to obesity but not related to age.

Koepp et al. reviewed injury data from the Idaho National Laboratory which belongs to the Department of Energy.   In reviewing six years worth of injury data, 51% of those involved in slip, trip, and fall injuries were obese based on BMI values with a mean BMI of 31+/- 6.   This is similar to data from Ren et al. that looked at injuries in Texas which found a significant association between higher BMI levels and injuries from falls in an over 45 population.

DePaula et al.  looked into the relationship of loaded school backpacks and students (aged 10-19).  As 53 of the 339 students were considered to be obese, they provide the reminder that when looking at group data when generating percentage of body weight load for backpacks, the anthropometric breakdown for those in the sample group needs to be looked at.

Lerner et al. looked at a new marker set for collection of kinematic and kinetic data for obese subjects during gait testing.  The new obesity specific marker set was compared against a modified Helen Hayes marker set and found to have good agreement in non-obese subjects.  A significant effect was seen when comparing the marker sets with obese subjects.

Thorp et al. found that altering posture from sitting to standing every 30 minutes across the workday reduced fatigue levels and lower back pain in obese office workers while maintaining productivity.  They recommend future investigations to determine whether sustained use of adjustable height workstations affects concentration.

 

 

 

Friday Five – 3/31/17

Quin Bond, CEAS IIILeave a comment

The Friday Five is a set of five links that I have come across this week that pertain to ergonomics, occupational health, safety, human performance, or human factors.  For whatever reason, I found them interesting, but they are provided with minimal or no commentary and are not meant to be endorsement for a given product or research paper.

This week’s five are courtesy of a PubMed search on the terms: applied ergonomics

Manghisi et al. look at the use of the Kinect V2  (the newer generation of the Kinect) for performing RULA assessments to evaluate awkward postures.  Devices like the Kinect are interesting to me as they may allow for more natural evaluations of human movement in real life work settings.

Sedighi Maman et al. look at the use of wearable technologies for evaluating a data driven model for physical fatigue in the workplace.

JA Dobson et al. provide a literature review of work boot design and the impact on how workers walk.  (This is an important topic area that came up yesterday when we were in the field performing assessments for a customized job description.  The particular job has a variety of varied tasks with some that require steel toed boots.  The biggest complaint of the employees is comfort of steel toed boots for the tasks performed.)

Kang and Shin performed a study to determine the impact on accuracy and muscle activation patterns when target location is varied on computer touch screens.  This is going to be an important area for human factors and user interface professionals as touch screens become more common in the workplace.

Plamondon et al. look at the differences in how male and female workers lifting palletized loads with the same relative weight.   This study uses a similar lifting load weight to remove strength from the equation when looking at how the task is performed biomechanically.  While patterns between male and female subjects were similar, interjoint coordination differs.  Understanding of these differences can help with interventions to better reduce material handling injuries.