Award Date

8-1-2014

Degree Type

Thesis

Degree Name

Master of Science (MS)

Department

Kinesiology and Nutrition Sciences

First Committee Member

John A. Mercer

Second Committee Member

Richard D. Tandy

Third Committee Member

Michelle Samuel

Fourth Committee Member

Nancy L. Lough

Number of Pages

58

Abstract

The purpose of this study was to determine if body weight support influences the stride length-speed relationship. Additionally, the purpose was to determine if impact characteristics of running are influenced by body weight support and speed. Subjects (n=10; 6 female, 4 male) volunteered to participate in this study. All subjects were injury free and were comfortable running on a treadmill for 30 minutes. Subjects ran on a lower body positive (LBPP, Alter-G, G-Trainer) treadmill for 4 conditions of body weight (100, 40, 30 and 20% of body weight) and 4 running speeds (100, 110, 120 and 130% of the preferred speed). Subjects ran at each trial for 1 minute. Leg acceleration and stride length were recorded using an accelerometer mounted on the distal anterior-medial aspect of the tibia. Dependent variables (stride length, leg impact acceleration) were compared using 4 (speed) × 4 (body weight) repeated measures ANOVAs. It was determined that stride length was influenced by speed (p0.05). Leg impact acceleration was influenced by the interaction of speed and body weight (p

Keywords

Body weight; Gait; Gait in humans; Leg impact acceleration; Lower body positive pressure treadmill; Rehabilitation; Running; Running speed; Stride length

Disciplines

Biomechanics | Exercise Science | Kinesiology | Physical Therapy | Physiotherapy | Sports Sciences

Language

English


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