Kinesiology 3347A/B Chapter Notes - Chapter 7: High Guard, Vestibular System, Bipedalism

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 3347A/B
• Professor: Vincent Liardi

Document Summary

The act/ capability of moving from place to place. Moving on one, two, or four limbs: crawling, walking, running. Certain motor milestones must first be achieved: ie. Crawling- army crawl: moving on hands and abdomen. Creeping: moving on hands and knees. Progression: crawling- chest and stomach on floor, low creep- stomach lightly elevated, rock back and forth in high creep position, creeping with arms and legs working alternately infant needs continuous path, flat surface, sufficient friction for balance. Walking is the first form of upright, bipedal locomotion. Walking is defined by: 50/50 phasing between right and left legs, period of double support (both feel on the ground) followed by period of single support. Walking phase: stance phase 60, swing phase 40% Better understanding of balance feet are out-toed and spread wide apart independent steps are taken: vestibular system still not completely developed. Opposition (arms to legs) and pelvic rotation occurs.