@article{e24d01311ca344d682988b5a1c902dda,
title = "Comparisons of physical exposure between workers harvesting apples on mobile orchard platforms and ladders, part 2: Repetitive upper arm motions",
abstract = "Farmworkers are exposed to physical risk factors including repetitive motions. Existing ergonomic assessment methods are primarily laboratory-based and, thus, inappropriate for use in the field. This study presents an approach to characterize the repetitive motions of the upper arms based on direct measurement using accelerometers. Repetition rates were derived from upper arm inclination data and with video recordings in the field. This method was used to investigate whether harvesting with mobile platforms (teams harvesting apples from the platform and the ground) increased the farmworkers{\textquoteright} exposure to upper arm repetitive motions compared to traditional harvesting using ladders. The ladder workers had higher repetitive motions (13.7 cycles per minute) compared to the platform and ground workers (11.7 and 12.2 cycles per minutes). The higher repetitions in the ladder workers were likely due to their ability to work independently and the additional arm movements associated with ladder climbing and walking.",
keywords = "Accelerometer, Agriculture, Productivity, Repetition",
author = "Ornwipa Thamsuwan and Kit Galvin and Maria Tchong-French and Lovenoor Aulck and Boyle, {Linda Ng} and Ching, {Randal P.} and McQuade, {Kevin J.} and Johnson, {Peter W.}",
note = "Funding Information: This work was supported by the CDC-NIOSH Cooperative Agreement #5 U54 0H007544-11 and the Washington State Medical Aid and Accident Fund . The authors would like to thank the platform manufacturer and all the study participants. We also thank Scott Driscoll, the orchard manager from the collaborating orchard, and the research team members, including Maria Negrete, Pablo Palm{\'a}ndez, Margaret Hughes, and Katherine Gregersen for their support in data field collection, and Patrik Rynell for his support in the development of a data processing program. Funding Information: This work was supported by the CDC-NIOSH Cooperative Agreement #5 U54 0H007544-11 and the Washington State Medical Aid and Accident Fund. The authors would like to thank the platform manufacturer and all the study participants. We also thank Scott Driscoll, the orchard manager from the collaborating orchard, and the research team members, including Maria Negrete, Pablo Palm?ndez, Margaret Hughes, and Katherine Gregersen for their support in data field collection, and Patrik Rynell for his support in the development of a data processing program. Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",
year = "2020",
month = nov,
doi = "10.1016/j.apergo.2020.103192",
language = "English (US)",
volume = "89",
journal = "Applied Ergonomics",
issn = "0003-6870",
publisher = "Elsevier Limited",
}