Date of Award

Spring 8-1-2006

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Athletic Training

First Advisor

Timothy Demchak

Second Advisor

Thomas Nesser

Third Advisor

Jeffrey Edwards

Abstract

Context: Many types of resistance training programs have been implemented in order to enhance sprint performance, however, most programs have overlooked the importance of the hip flexor muscles. Objective: To determine if a training protocol using a Speed Trainers ™ device will increase hip flexion strength, and if that increase in strength has an effect on competition sprint times. Design: A 2 X 2 pre-test post-test design with treatment (hip flexor strength training and sham group) and time (pre-training and posttraining) as the independent variables. Setting: The strengthening program took place at the Indiana State University outdoor track. Competition sprint times were recorded at the: Lou Hartzog Track in Carbondale, Illinois; Abe Stuber Track and Field Complex in Cape Girardeau, Missouri; the Drake Relays in Des Moines, Iowa; Michael A. Carroll Track and Field Stadium in Indianapolis, Indiana; and the Robert C. Haugh Track and Field Complex in Bloomington, Indiana. Subjects: Ten healthy NCAA Division I track athletes (M = 7, F = 3, age= 20.45 ± 1.30 yrs, ht = 174.57 ± 7.11cm, mass= 69.52 ± 8.36kg). Measurements: Bilateral hip flexor strength, measured by a dynamometer to the nearest O.Olkg, and sprint time, measured by automated timing devices to the nearest O.Ols, served as the dependent variables. Interventions: A four week strengthening program targeting the hip flexors was implemented three times a week. A Speed Trainers ™ harness was used to provide a load to the hip flexors during training. Weight was progressively added to the harness each week (0-4 pounds). Results: No improvement in hip flexion strength occurred due to the training program. No improvements in sprint time were seen. Conclusions: A three day per week, four week program using a Speed Trainers TM harness while performing walking high knees for 100 meters did not create any strength gains in the hip flexors ofNCAA Division I sprinters.

Download

Share

COinS