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Applications for Qualitative and Quantitative Motion Analysis. Gary D. Heise, PhD Mark Peters, MA, ATC, CSCS Cory L. Christiansen, MS, PT. University of Northern Colorado School of Sport & Exercise Science Biomechanics Lab & Human Performance Lab. Greeley, CO. 210 km. Colorado Springs, CO.
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Applications for Qualitative and Quantitative Motion Analysis Gary D. Heise, PhD Mark Peters, MA, ATC, CSCS Cory L. Christiansen, MS, PT University of Northern Colorado School of Sport & Exercise Science Biomechanics Lab & Human Performance Lab
Greeley, CO 210 km Colorado Springs, CO
Outline • Historical Comments • Qualitative Applications • Quantitative Applications Peak Motus
Historical Comments • Early Motion Analysis • Photography • Moving Pictures Muybridge Marey
Historical Comments • 20th Century Motion Analysis • Many descriptive studies • More Recently • Hypothesis-driven research • Modeling more common
Outline • Historical Comments • Qualitative Applications • Quantitative Applications
Qualitative Applications • Question: • How can clinicians (e.g., athletic trainers) improve the rehabilitation of injured athletes?
Qualitative Applications • Application: • Record baseline, “healthy movement profiles” for possible, post-injury comparison. Dartfish sample video
Qualitative Applications • Example: • golf • Dartfish • non-numerical • cues & tools • “key positions” • easily shared Dartfish high school golfer
Qualitative Applications • Example: • squat • poor form Dartfish UNC Human Performance Lab
Qualitative Applications • Example: • squat • good form Dartfish UNC Human Performance Lab
Qualitative Applications Dartfish, SimulCam UNC Human Performance Lab
Outline • Historical Comments • Qualitative Applications • Quantitative Applications Peak Motus
Quantitative Applications • Questions: • Does flexibility influence motion? Do alterations from stretching influence motion?
Quantitative Applications • Applications: • stretching and dynamic stiffness • stretching and locomotion in older adults • flexibility and runners
Quantitative Applications • Range of Motion • active ROM • measured with video • high reliability • clinician bias removed Ankle Angle (df+, pf-) Peak Motus 9.0 Vicon Motion Systems, Inc.
Quantitative Applications • Stretching • active ROM • dynamic stiffness • EMG measures Leg Spring Model Ankle Angle (top), EMG activity (bottom) Peak Motus 9.0 Vicon Motion Systems, Inc.
Stretching • older adults • walking kinematics Joint Angles: Hip (top), Knee, Ankle (bottom) Peak Motus 9.0 Vicon Motion Systems, Inc.
Stretching • older adults • walking kinematics Angular Velocities: Hip (top), Knee, Ankle (bottom) Peak Motus 9.0 Vicon Motion Systems, Inc.
side view top view Stick Figures: Runner A (top), Runner B (bottom) Peak Motus 9.0 Vicon Motion Systems, Inc.
A-P axis Left Shoulder Right Shoulder (Shoulder – Hip) Runner A: Shoulder Line, Hip Line, (Shoulder – Hip) Peak Motus 9.0 Vicon Motion Systems, Inc.
Concluding Comments • Qualitative • familiarity with system • feedback for patient • Quantitative • familiarity with system • feedback for experts • Relevant Information • keep it simple • use proven variables Borelli
Acknowledgements Peak Motus