Maximum Voluntary Joint Torque as a Function of Joint Angle and Angular Velocity: Model Development and Application to the Lower Limb

Details

• Personal Author:
  Anderson DE ; Madigan ML ; Nussbaum MA
• Description:
  Measurements of human strength can be important during analyses of physical activities. Such measurements have often taken the form of the maximum voluntary torque at a single joint angle and angular velocity. However, the available strength varies substantially with joint position and velocity. When examining dynamic activities, strength measurements should account for these variations. A model is presented of maximum voluntary joint torque as a function of joint angle and angular velocity. The model is based on well-known physiological relationships between muscle force and length and between muscle force and velocity and was tested by fitting it to maximum voluntary joint torque data from six different exertions in the lower limb. Isometric, concentric and eccentric maximum voluntary contractions were collected during hip extension, hip flexion, knee extension, knee flexion, ankle plantar flexion and dorsiflexion. Model parameters are reported for each of these exertion directions by gender and age group. This model provides an efficient method by which strength variations with joint angle and angular velocity may be incorporated into comparisons between joint torques calculated by inverse dynamics and the maximum available joint torques. [Description provided by NIOSH]
• Subjects:
  Age Factors Biomechanical Phenomena Musculoskeletal System Occupational Health Safety Sex Characteristics
• Keywords:
  Age-factors Biomechanics Humans Mathematical-models Muscle-function Musculoskeletal-system Sex-factors
• ISSN:
  0021-9290
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  40
• Issue:
  14
• NIOSHTIC Number:
  nn:20033019
• Citation:
  J Biomech 2007 Mar; 40(14):3105-3113
• Contact Point Address:
  Michael L. Madigan, Department of Engineering Science and Mechanics, Virginia Tech-Wake Forest School of Biomedical Engineering and Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 20461
• Federal Fiscal Year:
  2007
• Performing Organization:
  Virginia Polytechnic Institute and State University
• Peer Reviewed:
  True
• Start Date:
  20040801
• Source Full Name:
  Journal of Biomechanics
• End Date:
  20060731
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:5e7c0ce4d14497433b2b360c3186c2a43177a46c977496a238cd763bfc0a5aec7bf00bb6400022663cf8a681f20567971545d5acc6f6b86bf0db7ccb5d716adc
• Download URL:
  https://stacks.cdc.gov/view/cdc/188754/cdc_188754_DS1.pdf
• File Type:
  [PDF - 245.03 KB ]