Date of Award

7-2006

Degree Name

Master of Arts

Department

Health, Physical Education, and Recreation (to 2011)

First Advisor

Dr. Michael Miller

Second Advisor

Dr. Christopher Cheatham

Third Advisor

Dr. Timothy Michael

Access Setting

Masters Thesis-Campus Only

Abstract

The purpose of this study was to determine the effects of subcutaneous tissue thickness on NMES intensity and NMES force production of the quadriceps. Subjects: Forty three healthy subjects volunteered for the study. Subjects were placed into three groups dependent on tissue thickness measurements. Procedures: Knee extensor MVIC was measured with a Kin-Com™ Dynamometer and subjects became familiar with NMES using the OrthoDx™. A two way ANOVA with the factors of gender (male and females) and skinfold groups (category 1-3) was used to examine differences in the dependent variables of final NMES intensity and NMES force production. Results: For the dependent variable of final NMES intensity, there was a significant main effect for gender F(l,37) = .4.46, p=.042. Males exhibited a greater final intensity compared to females. A gender by skinfold category interaction was significant F(2,37) = 3.1, p=.05. Post hoc testing revealed that for skinfold category one, males were significantly greater than females (p=.001) and significant difference was found between skinfold category 1 and 3 (p=.005) within the females. Conclusion: When NMES intensity increased, NMES force production decreased. In addition, as thickness of subcutaneous tissue increased, the intensity of NMES increased.

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