Calendar

May 27

13th Intl. Conf. on New Interfaces for Musical Expression

May 28

Graphics Interface 2013

May 29

Boston UXPA Usability and UX Conf. 2013

May 24

“ For a list of all the ways technology has failed to improve the quality of life, please press three. ”

-- Alice Kahn

Share this quote on...
Get more quotes via RSS or by joining our Usability Quote of the Day Facebook Page

Featured chapter

Read the fascinating history of Wearable Computing, told by its father, Steve Mann

Read Steve's chapter !

Help us help you!

Spread the word:
Donate
Other ways to help

Maury Nussbaum

Add description

← Button will not work: You have not enabled Javascript. How do I enable it?

Rename / change spelling

Add publication

← Button will not work: You have not enabled Javascript. How do I enable it?

Publications by Maury Nussbaum (bibliography)

1995

Edit | Del

Lavender, Steven A., Li, Yichun, Natarajan, Raghu, Andersson, Gunnar B. J. and Nussbaum, Maury (1995): The Effects of Lifting Speed and Load Magnitude on the Torsional and Lateral Bending Moments during Twisting. In: Proceedings of the Human Factors and Ergonomics Society 39th Annual Meeting 1995. p. 954.

“Epidemiological studies have associated occupations that require twisting of the torso with increased low-back disorders. The objective of this study was to quantify the torsional and lateral bending moments acting on the spine in three lifting modes that varied in the amount of twisting required. Fifteen subjects lifted boxes, weighing 10 and 20 percent of their body weight, at two speeds. Kinetic and kinematic data were obtained with a two force-platform, four camera, opto-electronic motion detection system. These data were run through an inverse dynamic model to quantify the net torsional and lateral bending moments at L5/S1. Results indicated that the asymmetric lifting activities tested created significantly greater lateral bending and torsional moments on the spine than the sagittally symmetric task. The greatest lateral bending and torsional moments were observed as subjects lifted the 20 percent body weight load from a 90 degree asymmetric position positioned 88 cm from the floor. The faster lifting speed significantly reduced the torsional and lateral bending moments during particular phases of the lifts tested. This suggest that during rapid twisting motions the path taken by the box was doser to the body, thereby, minimizing the box's external moment.”

Add publication