Differences in Functional Performance of the Shoulder Musculature with Obesity and Aging

Details

• Personal Author:
  Cavuoto LA ; Nussbaum MA
• Description:
  The workforce includes an increasing number of workers who are obese and/or older, which may lead to higher rates of workplace injuries. We examined the main and interactive effects of obesity and age on strength and functional performance during sustained isometric exertions involving shoulder flexion in two postures. Four groups of eight participants each (non-obese (18.5 < BMI < 25 kg/m2) young (18-25 years), non-obese older (50-65 years), obese (30 < BMI < 40 kg/m2) young, and obese older) completed static endurance tasks in each posture, at fixed target levels of shoulder moment. Shoulder strength was approximately 25% higher with obesity and equivalent between age groups. Both obesity and age affected endurance time, with the obese and younger groups both having shorter endurance. Obesity and age did not have an interactive effect on endurance time and the results were inconclusive regarding acute fatigue effects for individuals who are older and obese. Further work is needed under more realistic task conditions, to explore the likely complex effects of these individual differences. [Description provided by NIOSH]
• Subjects:
  Age Factors Biomechanical Phenomena Fatigue Musculoskeletal System Occupational Health Safety
• Keywords:
  Age Factors Author Keywords: Endurance Biomechanics BMI Body Mass Index Isometric Strength Muscle Function Obesity Perceived Discomfort Task Performance Upper Extremities Weight Factors

  More +
• ISSN:
  0169-8141
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  New York ; OSHA Region 2 ; OSHA Region 3 ; Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  393-399
• Volume:
  43
• Issue:
  5
• NIOSHTIC Number:
  nn:20054023
• Citation:
  Int J Ind Ergon 2013 Sep; 43(5):393-399
• Contact Point Address:
  Lora A. Cavuoto, Department of Industrial and Systems Engineering, University at Buffalo, SUNY, 324 Bell Hall, Buffalo, NY 14260, USA
• Email:
  loracavu@buffalo.edu
• Federal Fiscal Year:
  2013
• Performing Organization:
  Virginia Polytechnic Institute and State University, Blacksburg
• Peer Reviewed:
  True
• Start Date:
  20010701
• Source Full Name:
  International Journal of Industrial Ergonomics
• End Date:
  20260630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:732939bb21a545a5faa5f3fc9b4f2c10b0ee2e3bb2b1c05abafac70701b76155474e935c8e9fcb0aba3b4438e7dcc522d22f3afc640a4a20ca776c47e267bc82
• Download URL:
  https://stacks.cdc.gov/view/cdc/216672/cdc_216672_DS1.pdf
• File Type:
  [PDF - 652.01 KB ]