Journal article
Whole-body angular momentum in incline and decline walking
Journal of biomechanics, Vol.45(6), pp.965-971
04/05/2012
DOI: 10.1016/j.jbiomech.2012.01.012
PMID: 22325978
Abstract
Angular momentum is highly regulated over the gait cycle and is important for maintaining dynamic stability and control of movement. However, little is known regarding how angular momentum is regulated on irregular surfaces, such as slopes, when the risk of falling is higher. This study examined the three-dimensional whole-body angular momentum patterns of 30 healthy subjects walking over a range of incline and decline angles. The range of angular momentum was either similar or reduced on decline surfaces and increased on incline surfaces relative to level ground, with the greatest differences occurring in the frontal and sagittal planes. These results suggest that angular momentum is more tightly controlled during decline walking when the risk of falling is greater. In the frontal plane, the range of angular momentum was strongly correlated with the peak hip and knee abduction moments in early stance. In the transverse plane, the strongest correlation occurred with the knee external rotation peak in late stance. In the sagittal plane, all external moment peaks were correlated with the range of angular momentum. The peak ankle plantarflexion, knee flexion and hip extension moments were also strongly correlated with the sagittal-plane angular momentum. These results highlight how able-bodied subjects control angular momentum differently on sloped surfaces relative to level walking and provide a baseline for comparison with pathological populations that are more susceptible to falling.
Details
- Title: Subtitle
- Whole-body angular momentum in incline and decline walking
- Creators
- Anne K Silverman - Department of Mechanical Engineering, Colorado School of Mines, Golden, CO 80401, USAJason M Wilken - Center for the Intrepid, Department of Orthopedics and Rehabilitation, Brooke Army Medical Center, Ft. Sam Houston, TX 78234, USAEmily H Sinitski - Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712, USARichard R Neptune - Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
- Resource Type
- Journal article
- Publication Details
- Journal of biomechanics, Vol.45(6), pp.965-971
- Publisher
- Elsevier Ltd
- DOI
- 10.1016/j.jbiomech.2012.01.012
- PMID
- 22325978
- ISSN
- 0021-9290
- eISSN
- 1873-2380
- Grant note
- name: Military Amputee Research Program (to JMW)
- Language
- English
- Date published
- 04/05/2012
- Academic Unit
- Physical Therapy and Rehabilitation Science
- Record Identifier
- 9984047637902771
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