Presentation on theme: "Human Locomotion Focus on Walking Taylor Murphy HSS 537."— Presentation transcript:
Human Locomotion Focus on Walking Taylor Murphy HSS 537
Objectives Understand the relationship between center of gravity, stability, and mobility Know the importance of force Identify the importance of the transition from standing to walking Understand the fundamentals of walking Review the main points of locomotion
Important Terminology Center of Gravity (COG): the balance point or point where all the weight of the body or object is concentrated Stability: when an object is in equilibrium Mobility: when an object is in motion
Center of Gravity Two conditions must be met: All the linear forces acting on the body must be balanced All the rotary forces (torques) must be balanced Location of COG of humans in normal standing position varies with body build, age, and sex
Stability and Equilibrium All objects at rest are in equilibrium All objects at rest are not equally stable Stable Equilibrium Unstable Equilibrium Neutral Equilibrium
Additional Walking Terminology Stride: is from heel strike on one leg to the next heel strike with the same leg Stride Length: is the distance covered during a single stride Step: begins with the heel strike of one leg and ends with the heel strike of the contralateral, or opposite, leg
Objectives of Gait Maintain balance Produce/Resist/dissipate forces Move body in intended direction Conserve energy Shock Absorption
In Conclusion Normal Locomotion is achieved with complex combinations of stability, mobility, motor control, and force These factors will work congruently to provide the most shock- absorbing and energy efficient forward movement
References BMC Musculoskeletal Disorders 17.6 (2005): 1-9. Print. Kinesiology: Scientific Basis of Human Motion. 11th ed. New York: McGraw-Hill, 2008. Print. Normal Human Locomotion, Part 1: Basic Concepts and Terminology 6 (2006): 1-8. Print. Normal Human Locomotion, Part 2: Motion, Ground Reaction Force and Muscle Activity 6 (2006): 9-17. Print. Sports Injury Clinic. Sports Injury Clinic, 23 Apr. 2008. Web. 20 Nov. 2009..
Thank You Human Locomotion with a focus on walking
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