Manual handling in non-inertial reference frames

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Abstract

BACKGROUND: This paper reports on the torques developed in the shoulder joint experienced by occupants of moving vehicles during manual handling tasks. Handling heavy weights can cause musculoskeletal injuries, especially if handling is done with arms extended or at high levels.
OBJECTIVE: The aim of the study was to measure the longitudinal and lateral accelerations in a variety of passenger vehicles together with the postures of subjects lifting luggage onto store shelves. This data enabled the application of inverse dynamics methods in a non-inertial reference frame to calculate the shoulder joint torques.
METHODS: The subjects lifted 3 pieces of luggage of masses of 5kg, 10kg and 14kg onto shelving which was at heights of 1.2m, 1.6m and 1.8m. The movement of subjects was measured using a 12 camera, 3-dimensional optical tracking system. The subjects stood on force plates to measure the ground reaction forces.
RESULTS: 63 trials were completed, although 9 trials were aborted due to the subjects feeling unable to complete the task. It was found that the shoulder torques exceeded the levels recommended by the UK Health and Safety Executive for manual handling. A lift assistance device is suggested to reduce the shoulder torques required for luggage handling.
Original languageEnglish
Title of host publicationProceedings of 12th International Conference BIOMDLORE 2018
Place of PublicationLithuania
Publication statusAccepted/In press - 11 Apr 2018
Event12TH INTERNATIONAL CONFERENCE BIOMDLORE 2018 - Bialystok, Poland
Duration: 28 Jun 201830 Jun 2018
http://biomdlore.vgtu.lt/index.php/biomdlore/2018

Conference

Conference12TH INTERNATIONAL CONFERENCE BIOMDLORE 2018
CountryPoland
CityBialystok
Period28/06/1830/06/18
Internet address

Fingerprint

Torque
Shoulder Joint
Optical Devices
Posture
Emotions
Arm
Safety
Weights and Measures
Equipment and Supplies
Handling (Psychology)
Health
Wounds and Injuries

Keywords

  • Biomechanics, manual handling

Cite this

Shippen, J., & May, B. (Accepted/In press). Manual handling in non-inertial reference frames. In Proceedings of 12th International Conference BIOMDLORE 2018 Lithuania.

Manual handling in non-inertial reference frames. / Shippen, James; May, Barbara.

Proceedings of 12th International Conference BIOMDLORE 2018. Lithuania, 2018.

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Shippen, J & May, B 2018, Manual handling in non-inertial reference frames. in Proceedings of 12th International Conference BIOMDLORE 2018. Lithuania, 12TH INTERNATIONAL CONFERENCE BIOMDLORE 2018, Bialystok, Poland, 28/06/18.
Shippen J, May B. Manual handling in non-inertial reference frames. In Proceedings of 12th International Conference BIOMDLORE 2018. Lithuania. 2018
Shippen, James ; May, Barbara. / Manual handling in non-inertial reference frames. Proceedings of 12th International Conference BIOMDLORE 2018. Lithuania, 2018.
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AB - BACKGROUND: This paper reports on the torques developed in the shoulder joint experienced by occupants of moving vehicles during manual handling tasks. Handling heavy weights can cause musculoskeletal injuries, especially if handling is done with arms extended or at high levels.OBJECTIVE: The aim of the study was to measure the longitudinal and lateral accelerations in a variety of passenger vehicles together with the postures of subjects lifting luggage onto store shelves. This data enabled the application of inverse dynamics methods in a non-inertial reference frame to calculate the shoulder joint torques.METHODS: The subjects lifted 3 pieces of luggage of masses of 5kg, 10kg and 14kg onto shelving which was at heights of 1.2m, 1.6m and 1.8m. The movement of subjects was measured using a 12 camera, 3-dimensional optical tracking system. The subjects stood on force plates to measure the ground reaction forces.RESULTS: 63 trials were completed, although 9 trials were aborted due to the subjects feeling unable to complete the task. It was found that the shoulder torques exceeded the levels recommended by the UK Health and Safety Executive for manual handling. A lift assistance device is suggested to reduce the shoulder torques required for luggage handling.

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