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Parameters and comparisons of the quadriceps angle of college-aged men and women in the supine and standing positions

Human Performance Laboratory, Brigham Young University, Provo, Utah

Rulon S. Francis, PhD, PT

Human Performance Laboratory, Brigham Young University, Provo, Utah

The purpose of this study was to determine normal, mean quadriceps angles (Q angles) for college-aged men and women, and to compare Q angles measured in the supine and the standing positions. The Q angles of 269 men and 257 women were measured in both positions by use of a specially modified goniometer. The mean Q angle for men was 12.7° in the supine position and 13.6° in the standing position; for women the mean Q angle was 15.8° in the supine position and 17.0° in the standing position. All of these differences were statistically significant. We calculated the inci dence of an abnormally high Q angle, and will discuss the implications of our findings.

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