Abstract
The objective of this study was to describe anthropometric characteristics associated with knee/lower leg (KLL) injury susceptibility among women Manne Corps recruits in basic training. Subjects were 768 women Marine Corps recruits from Parris Island, South Carolina. Mean (±SD) age (yrs), height (cm), weight (kg), and body fat% were 19.2 (±2.0), 163.3(±6.4), 58.4 (±6.9), and 24.4 (±4.1), respectively. Enrollment commenced at arrival to boot camp by obtaining informed consent, demographic, and anthropometric measurements. Leg length (LL) was measured from the right anterior superior iliac spine to the right medial malleolus with a nylon tape measure. Bitrochanteric width (BTW) was measured between the most lateral aspects of the trochantena with a bladed anthropometer. Stature was measured as free standing height using a wall mounted stadiometer and right-angled head board, with the head placed in the Frankfort plane, at the end of a deep inward breath. Recruits were followed over the 13 weeks of boot camp for occurrence of KLL injuries. KLL injuries were documented by medical record review. Of the 768 subjects, 190 (24.7%) incurred a total of 245 KLL injuries. Variables were categorized into quartiles and used in logistic regression in order to differentiate levels of significance. Risk factors for KLL injuries include LL/stature and BTW/LL. The odds of incurring a KLL injury were 2.021 (95% Cl 1.248, 3.273) times greater for those women whose LL/stature ratio was in the highest quartile compared to those whose ratio was in the lowest quartile. The odds of incurring a KLL injury were 1.767 (95% Cl 1.090, 2.864) times greater for those women whose BTW/LL ratio was in the lowest quartile compared to those whose ratio was in the highest quartile. Our data suggest that the anthropometric variables LL/stature and BTW/LL are associated with a high incidence of KLL injuries in women who undergo rigorous physical training.
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