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Theses/Dissertations

Kinesiology

Graduate Theses and Dissertations

Aging

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Articles 1 - 3 of 3

Full-Text Articles in Life Sciences

Physical Activity And Sarcopenia In Older Adults, Nathan Frederick Meier Jan 2018

Physical Activity And Sarcopenia In Older Adults, Nathan Frederick Meier

Graduate Theses and Dissertations

The aging process is typically associated with loss of muscle mass, strength, and function. At a certain threshold, low levels of muscle mass, strength, and function are considered a disease called sarcopenia, which is associated with increased risk of falls, loss of independence, mobility issues, and mortality. Evidence suggests some of the risk factors for sarcopenia, such as sedentary lifestyle, low physical activity, bedrest, chronic disease, certain drug treatments, malnutrition, anabolic resistance, intermuscular adipose tissue infiltration, and decreased neuromuscular activation, are modifiable. Also, both the prevention and treatment of sarcopenia call for prescription of physical activity. Therefore, the overall interest ...


Age-Associated Adaptations In Lower Limb Motor Patterns During Walking And Cycling, Harsh Harish Buddhadev Jan 2015

Age-Associated Adaptations In Lower Limb Motor Patterns During Walking And Cycling, Harsh Harish Buddhadev

Graduate Theses and Dissertations

Muscular strength and power generating ability decline with advancing age. Older adults adapt their lower limb motor patterns to cope with these declines in muscle function. When mechanical demands approach limits of lower limb muscular capacity, motor patterns must be adapted to produce a desired movement. The term “motor pattern” is used to broadly represent the kinematic and kinetic profile of a person accomplishing a given task. Generally, these adaptations involve higher reliance on stronger proximal muscles to compensate for limitations or weakness of distal muscles. Three studies were conducted to examine factors affecting differences between older and young adults ...


Age- And Speed-Related Differences In Walking Smoothness, Kristin Ann Lowry Jan 2010

Age- And Speed-Related Differences In Walking Smoothness, Kristin Ann Lowry

Graduate Theses and Dissertations

Extensive literature documents age-related differences in spatiotemporal variables during gait. Recent efforts have focused on upper body control and balance during gait. Harmonic ratios, derived from trunk acceleration signals, measure smoothness of motion, and are an indication of dynamic balance during gait. Limited and conflicting information exists regarding the effect of walking speed on harmonic ratios, as well as age-related differences. This research extends previous literature by: 1) examining harmonic ratios across a range of self-selected speeds in young adults; 2) comparing harmonic ratios at preferred speed in young adults, healthy 60-year-olds, and healthy 80-year-olds; and 3) comparing harmonic ratios ...