Reproducibility of the kinematics and kinetics of the lower extremity during normal stair-climbing

B. Yu, T. Kienbacher, E. S. Growney, M. E. Johnson, K. N. An

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

The purpose of this study was to examine the intrasubject reproducibility of the kinematic and kinetic measures of the lower extremity during normal stair-climbing. Three-dimensional video and force-plate data were collected for three trials per subject during each of three conditions: ascending, descending, and level walking. Three-dimensional angles and moments of the ankle, knee, and hip joints were calculated. The coefficient of multiple correlation was used to determine the intrasubject reproducibility of joint angles and resultant moments. Analysis of variance with repeated measures was conducted to compare the magnitudes of the coefficients between different steps, different joints, and different joint functions. The results showed that (a) generally, the kinematic and kinetic measures of normal subjects climbing stairs were reproducible; (b) the kinetic measures during the transition steps from level walking to ascending and from descending to level walking were significantly less reproducible than those during the other steps; (c) the data from the sagittal plane were more reproducible than those from the other two planes; and (d) the kinetic measures were more reproducible than the kinematic measures, especially for abduction-adduction and internal-external rotation.

Original languageEnglish (US)
Pages (from-to)348-352
Number of pages5
JournalJournal of Orthopaedic Research
Volume15
Issue number3
DOIs
StatePublished - May 1997

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Biomechanical Phenomena
Lower Extremity
Walking
Joints
Ankle Joint
Hip Joint
Knee Joint
Analysis of Variance
Stair Climbing

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

Cite this

Reproducibility of the kinematics and kinetics of the lower extremity during normal stair-climbing. / Yu, B.; Kienbacher, T.; Growney, E. S.; Johnson, M. E.; An, K. N.

In: Journal of Orthopaedic Research, Vol. 15, No. 3, 05.1997, p. 348-352.

Research output: Contribution to journalArticle

Yu, B. ; Kienbacher, T. ; Growney, E. S. ; Johnson, M. E. ; An, K. N. / Reproducibility of the kinematics and kinetics of the lower extremity during normal stair-climbing. In: Journal of Orthopaedic Research. 1997 ; Vol. 15, No. 3. pp. 348-352.
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