Subcutaneous tissue thickness alters the effect of NMES
Michael G Miller1, Christopher C Cheatham, William R Holcomb
1Health, Physical Education, and Recreation Department, Western Michigan University in Kalamazoo, MI, USA. g.miller@wmich.edu
Context:
No direct research has been conducted on the relationship between subcutaneous tissue thickness and neuromuscular electrical stimulation (NMES).
Objective:
The purpose of this study was to determine the effects of subcutaneous tissue thickness on NMES amplitude and NMES force production of the quadriceps.
Design:
Simple fixed design, testing the independent variable of subcutaneous thickness (skinfold) groups with the dependent variables of NMES amplitude and force production.
Setting:
Athletic Training Laboratory.
Participants:
29 healthy women.
Intervention:
NMES to produce at least 30% of maximal voluntary isometric contractions (MVIC) of the quadriceps.
Main Outcome Measure:
Maximal NMES amplitude and percentage of MVIC using NMES.
Results:
A significant skinfold category difference F2,28=3.92, P=.032 on NMES amplitude was found. Post hoc revealed the thinnest skinfold category tolerated less amplitude compared to the thickest category. A significant correlation was found between NMES amplitude skinfold category R=.557, P=.002.
Conclusion:
Higher NMES amplitudes are needed for the thickest skinfold category compared to the thinnest skinfold category.
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