Spine loading and trunk kinematics during team lifting.

@article{Marras1999SpineLA,
  title={Spine loading and trunk kinematics during team lifting.},
  author={William S. Marras and Kermit G. Davis and Bryan C. Kirking and Kevin P. Granata},
  journal={Ergonomics},
  year={1999},
  volume={42 10},
  pages={
          1258-73
        }
}
Two-person or team lifting is a popular method for handling materials under awkward or heavy lifting conditions. While many guidelines and standards address safe lifting limits for individual lifting, there are no such limits for team lifting, and these lifts are poorly understood. The literature associated with team lifting offers some interesting paradoxes. Many studies have indicated that people lift less per individual under team conditions compared with one-person lifting. Yet, at least… 
View on PubMed
spine.osu.edu
58 Citations
Highly Influential Citations
3
Background Citations
20
Methods Citations
4
Results Citations
2

Figures from this paper

58 Citations

Citation Type

Citation Type

Spinal loads during individual and team lifting
TLDR
The horizontal hand force and position of the hands had approximately equal contributions in reducing the spinal load during team lifting compared to individual lifting.
Spinal Loads During Two-person Team Lifting: Effect of Matched versus Unmatched Standing Height
The effect of lift teams on kinematics and muscle activity of the upper extremity and trunk in bricklayers.
TLDR
Working in lift teams may be a beneficial intervention for reducing trunk flexion and lumbar paraspinal activity when bricklayers work at heights between the knees and waist, but lift teams are not recommended at higher working heights.
Lumbar compression forces while lifting and carrying with two and four workers.
Lifting strength in two-person teamwork
  • Tzu-Hsien Lee
  • Education
    International journal of occupational safety and ergonomics : JOSE
  • 2016
TLDR
Teamwork lifting strength did not conform to the law of additivity for both strength-matched and strength-unmatched groups, implying that weaker members might be exposed to a higher potential danger in teamwork exertions.
Ergonomic issues in team lifting
In this article we review and critique the current body of scientific knowledge regarding the use of team lifting including: (a) psychophysical studies of team lifting capacity, and (b) studies of…
Does team lifting increase the variability in peak lumbar compression in ironworkers?
TLDR
It was concluded that team lifting does not result in an additional risk for low back complaints in ironworkers, and the variability in peak lumbar loading was somewhat higher in the team lifts compared to the single-worker lifts.
Spinal loads during two-person team lifting: effect of load mass distribution
Maximum Isometric Lifting Strengths of Men in Teamwork
TLDR
The results showed that experienced and height-matched participants could overcome the problem of lack of coordination in isometric teamwork lifting, and showed that some teamwork members, especially weaker members, might be forced to exert strengths higher than their maximum individual voluntary strengths in teamwork lifting.
How much weight is too much for manual lifting : determining a weight limit guideline for team-effort lifting tasks
TLDR
Though this guideline is aimed to serve 50th percentile male population, similar methodology may be adopted to develop weight limits for other worker population (with different gender and anthropometry).
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 32 REFERENCES
Spine loading during asymmetric lifting using one versus two hands.
TLDR
The results reflect the trade-offs that must be considered among spinal forces during asymmetric lifting while using one or two hands and have significant implications for task assessment interpretation and workplace design.
Maximum Acceptable Load for Lifting and Carrying in Two-Person Teams
The purpose of this study was to determine and verify the maximum acceptable load for lifting and carrying (MALL&C) in single- and mixed-gender two-person teams. Participants lifted and carried a box…
Prediction of Two-Person Team Lifting Capacity
Predictive models for team lifting capacity are important for task and equipment design, as well as worker selection and placement. The purpose of this study was to develop a prediction equation for…
Evaluation of spinal loading during lowering and lifting.
A Psychophysical Study of Two-Person Manual Material Handling Tasks
Over the past ten years, there has been extensive work performed on the development of guidelines for manual material handling tasks both within individual companies and within governmental agencies.…
A method for measuring external spinal loads during unconstrained free-dynamic lifting.
Testing of isometric and isokinetic lifting strengths of untrained females in teamwork.
The additivity of strengths for teams of two and three untrained female subjects in eam-work was evaluated in static (isometric) and dynamic (isokinetic) terms. Eight healthy college students were…
Maximum Load Lifting Capacity of Males and Females in Teamwork
The main objective of this study was to determine the maximum permissible load lifting capacity (MLCT) of males and females working in teams of two persons. On the average, the maximum capacity of…
Spine loading during trunk lateral bending motions.
A comprehensive analysis of low-back disorder risk and spinal loading during the transferring and repositioning of patients using diŒerent techniques
TLDR
Overall, patient handling was found to be an extremely hazardous job that had substantial risk of causing a low-back injury whether with one or two patient handlers and it is necessary to provide mechanical lift assist devices.
...
1
2
3
4
...