PEDS302 Chapter Notes - Chapter 7: High Guard, Bipedalism, Exaggeration

• School: University of Alberta
• Department: Physical Education and Sport
• Course: PEDS302
• Professor: Kelvin Jones

Document Summary

Moving on one, two, or four limbs: crawling, walking, running, hopping, skipping, galloping, using other modes. Crawling ( commando crawl ): moving on hands and abdomen. Walking is the first form of upright, bipedal locomotion. Walking is defined by: 50% phasing between the legs, period of double support (both feet on the ground) followed by period of single support. Arms are in high guard: highs are up high and stiff. Rate controllers are strength (to support body on one leg) and balance. Affected by growth and developmental changes: foot length, base of support (bos) width, height of the center of mass (com) over the bos. * weeks after the onset of independent walking. Early childhood: by age 5, essential components of an advanced walk are present. Older adulthood: maximizing stability, out-toeing increases, stride length decreases, pelvic rotation decreases, speed decreases, objects are used as balance aids. Occurs 6 to 7 months after walking starts.