2001•ISBS - Conference Proceedings ArchiveRequires access
LOADED BACKPACK POSITIONS AFFECTS TRUNK POSITION DURING WALKING
Donald Sussman, Marika A. Walker, Michael Tamburello, Bonnie VanLunen, E. Dowling, Kristen Bova Campbell, Juan Antonio Flores, R. Ibrahimb, Emily A. Larson
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Abstract
The effects of backpack loading on lower extremity function was examined. Ten subjects were prepared with a 20 3D-reflective marker set, videotaped by a 4-camera setup, on a level treadmill in four conditions: without backpack (WO), one-strap on right shoulder (1SR), two-strap on back (2SB), and two strap on front (2SF). The videotape was digitized. Significant differences (p <0.05) were found for: head tilt between WO (1.650+ 0.61) compared to 1SR (2.690+0.87); forward trunk lean between WO (7.120+2.16) compared to the mean of all backpack positions (4.260+1.81) and lateral trunk lean between WO (7.220+2.01) compared to the mean of all backpack positions (3.900+1.54). Backpack loading in most any position may require the stretching and strengthening of muscles affected by kinematic changes caused by wearing a loaded backpack.