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Canada (509,856)
PEDS207 (22)
Jody Virr (22)
Lecture

Oct 11 - locomotion.doc

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Department
Physical Education and Sport
Course
PEDS207
Professor
Jody Virr
Semester
Fall

Description
Oct 11 – locomotion Early Walking • Arms in high guard • Early walking patterns tend to maximize stability and balance • Feet are out-toed and spread wide apart • Independent steps are taken • Rate controller are strength and balance Proficient Walking: Trading Stability for Mobility • Stride length increases • Base of support is reduced • Pelvis is rotated • Opposition Later Walking: Maximizing Stability • Out-toeing increases • Objects are used as balance aids • Stride length decreases • Pelvic rotation decreases • Speed decreases • When balance become rate limiter, our BOS becomes wide again. Arms will come out in front to provide stability • ROM decreases as age and this influences our gait. Our speed and balanced aids will change our walking patterns • The more healthy the older person is, the less noticeable change in walking patterns occurs • Osteoarthritis decreases ROM, pain with certain movements may cause someone not wanting to do certain movements, decline in muscle mass will cause a decrease in strength, and fear of falling influences walking. Fear of falling is an individual constraint • * be able to explain immature, proficient, and later walking* Running • Occurs 6-7 months after walking starts Defined by • 50% phasing of the legs • Flight phase followed by single support In order to progress from walking to running, we need increase strength, be able to have less stability, and be able to propel yourself into the air (strength). Early running is basically a fast walk because they don't have enough strength to leave the ground in the flight phase We have to consider the strength required to land on one foot in running. In running, strength is a huge rate limiter. Motor coordination, limbs are moving in a faster speed and have to be coordinated enough to do those movements. • Immature running is similar to immature walking • Wide base of support • Arms held in high guard position • Flat-footed contact with floor Early Running • Arms in high guard, limited ROM, short stride of length, little rotation Running ~Patter Phases • Support, flight, recovery, • Arm action is important Running ~ Support Phases The Leg • Supports the body • Absorbs the impact of the striking foot • Maintains forward motion while accelerating the body’s COG • Provides thrust to propel the body forward Running ~Flight Phase •
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