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Mike Alfonsi Thesis Document.pdf (988.86 KB)

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Reliability of Lower Extremity Biomechanics During Functional Activity Performance

Alfonsi, Michael
http://rave.ohiolink.edu/etdc/view?acc_num=toledo1398337862

Abstract Details

2014, Master of Science, University of Toledo, Exercise Science.
Context: Three dimensional, passive motion analysis systems allow researchers to non-invasively, yet thoroughly, examine the biomechanics of patients with many different orthopedic ailments. One problem with this technology is a lack of consistency in the number and placement of retroreflective markers. This results in a difficulty comparing results from studies done in the same lab over time. Objective: The purpose of this study is to determine the reliability of the chosen marker set when using passive motion capture to assess biomechanics during various dynamic tasks. Design: The design is a test-retest study. Setting: Musculoskeletal Health and Movement Science Laboratory Participants: Fifteen participants were recruited and volunteered for this study. Fourteen participants (age: 23.9±33.56 years; height: 1.73±0.12 m; mass: 71.93±15.95 kg; body mass index [BMI]: 23.82±2.76 kg/m2) completed the study. Intervention(s): Participants reported to motion analysis laboratory for two trials separated by seven days. The clinician placed 37 retro-reflective markers over the pre-determined anatomical landmarks. The subject then performed self-selected walking gait, standard walking gait, stair ascent/descent, jump landing and sit-to-stand tasks. Main Outcome Measures: The dependent variables include three dimensional, lower extremity biomechanics at the hip, knee, ankle, and trunk during each of the four biomechanics tasks. The independent variable is time (session 1 and session 2). The statistical analysis used to compare the measurements was independent t-tests and intraclass correlations (ICC). Results: Standard gait speed yielded the best ICC values (ICC > 0.652) for kinematics and kinetics at the hip and knee in both the frontal and sagittal plane. All other tasks found varying ICC values for kinetic and kinematic data in the frontal and sagittal plane (0.970 > ICC > 0.003). Conclusion: The present study showed that the chosen marker set is reliable when a novice clinician places the surface markers on the pre-determined anatomical landmarks.
Abbey Thomas (Advisor)
Kinesiology

Recommended Citations

Citations

  • Alfonsi, M. (2014). Reliability of Lower Extremity Biomechanics During Functional Activity Performance [Master's thesis, University of Toledo]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1398337862

    APA Style (7th edition)

  • Alfonsi, Michael. Reliability of Lower Extremity Biomechanics During Functional Activity Performance. 2014. University of Toledo, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=toledo1398337862.

    MLA Style (8th edition)

  • Alfonsi, Michael. "Reliability of Lower Extremity Biomechanics During Functional Activity Performance." Master's thesis, University of Toledo, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1398337862

    Chicago Manual of Style (17th edition)

toledo1398337862
746
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This open access ETD is published by University of Toledo and OhioLINK.