Document Detail

Lower limb joint kinetics during moderately sloped running.
MedLine Citation:
PMID:  20064043     Owner:  NLM     Status:  MEDLINE    
CONTEXT: Knowledge of the kinetic changes that occur during sloped running is important in understanding the adaptive gait-control mechanisms at work and can provide additional information about the poorly understood relationship between injury and changes in kinetic forces in the lower extremity. A study of these potential kinetic changes merits consideration, because training and return-to-activity programs are potentially modifiable factors for tissue stress and injury risk.
OBJECTIVE: To contribute further to the understanding of hill running by quantifying the 3-dimensional alterations in joint kinetics during moderately sloped decline, level, and incline running in a group of healthy runners.
DESIGN: Crossover study.
SETTING: Three-dimensional motion analysis laboratory.
PATIENTS OR OTHER PARTICIPANTS: Nineteen healthy young runners/joggers (age = 25.3 +/- 2.5 years).
INTERVENTION(S): Participants ran at 3.13 m/s on a treadmill under the following 3 different running-surface slope conditions: 4 degrees decline, level, and 4 degrees incline.
MAIN OUTCOME MEASURE(S): Lower extremity joint moments and powers and the 3 components of the ground reaction force.
RESULTS: Moderate changes in running-surface slope had a minimal effect on ankle, knee, and hip joint kinetics when velocity was held constant. Only changes in knee power absorption (increased with decline-slope running) and hip power (increased generation on incline-slope running and increased absorption on decline-slope running in early stance) were noted. We observed an increase only in the impact peak of the vertical ground reaction force component during decline-slope running, whereas the nonvertical components displayed no differences.
CONCLUSIONS: Running style modifications associated with running on moderate slopes did not manifest as changes in 3-dimensional joint moments or in the active peaks of the ground reaction force. Our data indicate that running on level and moderately inclined slopes appears to be a safe component of training regimens and return-to-run protocols after injury.
Gaurav Telhan; Jason R Franz; Jay Dicharry; Robert P Wilder; Patrick O Riley; D Casey Kerrigan
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of athletic training     Volume:  45     ISSN:  1938-162X     ISO Abbreviation:  J Athl Train     Publication Date:    2010 Jan-Feb
Date Detail:
Created Date:  2010-01-12     Completed Date:  2011-01-06     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9301647     Medline TA:  J Athl Train     Country:  United States    
Other Details:
Languages:  eng     Pagination:  16-21     Citation Subset:  IM    
Department of Physical Medicine and Rehabilitation, University of Virginia, Charlottesville, VA 22908-1004, USA.
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MeSH Terms
Ankle Joint
Exercise Test
Hip Joint
Imaging, Three-Dimensional
Knee / physiology*
Knee Joint
Leg / physiology*
Running / physiology*
Young Adult

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