Evaluation of Upper Body Kinematics and Muscle Activity During Milking Attachment Task

Details

• Personal Author:
  Campbell R ; Douphrate DI ; Ortega C ; Oyama S ; Sosa A
• Description:
  The objective of the study was to evaluate the effects of udder height on upper body kinematics and muscle activity during a simulated attachment task in a parallel parlor set up, and the effects of udder access method (back or side) on the task biomechanics. Twenty males performed the task under conditions that simulated three udder heights and two udder access methods. The muscular load and kinematics during the task confirmed that milking is a physically demanding task. Trunk flexion angle increased with decreasing udder height, and the erector spinae activation was higher when the udder was below shoulder height compared to at or above. Compared to accessing the udder from side of the cow (herringbone parlor style), accessing from behind (Parallel parlor style) was associated with lower trunk flexion, greater shoulder horizontal adduction, lower shoulder elevation, and greater anterior deltoid activation. Milking in herringbone parlor style and with the udder at or above shoulder level may help reduce strain on the trunk/neck. [Description provided by NIOSH]
• Subjects:
  Agriculture Biomechanical Phenomena Cattle Dairy Products Ergonomics Livestock Musculoskeletal Diseases Musculoskeletal System Occupational Health Safety
• Keywords:
  Animal Products Workers Author Keywords: Ergonomics Biomechanics Cattle Industry Dairy Farm Dairy Products Injuries Musculoskeletal System Disorders Scapular Kinematics Upper Extremities
• ISSN:
  0169-8141
• Document Type:
  Text
• Funding:
  Cooperative Agreement
• Genre:
  Journal Article
• Place as Subject:
  Colorado ; OSHA Region 6 ; OSHA Region 8 ; Texas
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  101-106
• Volume:
  61
• NIOSHTIC Number:
  nn:20051918
• Citation:
  Int J Ind Ergon 2017 Sep; 61:101-106
• Contact Point Address:
  Sakiko Oyama, The University of Texas at San Antonio, Department of Health & Kinesiology, One UTSA Circle MB 3.416, San Antonio, TX 78249, United States
• Email:
  sakiko.oyama@utsa.edu
• Federal Fiscal Year:
  2017
• NORA Priority Area:
  Agriculture, Forestry and Fishing
• Performing Organization:
  Colorado State University - Ft. Collins
• Peer Reviewed:
  True
• Start Date:
  20030915
• Source Full Name:
  International Journal of Industrial Ergonomics
• End Date:
  20270914
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:2631d17a6bdae408b1c5205ca7dee4b21909d8abd6203122f023852ac23613603d4700377afd6f5a11157ecbb1251cfc02352836d6e44a28a1f28f226cfe1859
• Download URL:
  https://stacks.cdc.gov/view/cdc/211586/cdc_211586_DS1.pdf
• File Type:
  [PDF - 608.77 KB ]