Effect of Backpack Load Carriage on Cervical Posture in Primary Schoolchildren
SOURCE: Work. 2012 (Jan 1); 41 (1): 99—108
By Fran Kistner, Ira Fiebert, Kathryn Roach
School of Physical Therapy, Massachusetts College of Pharmacy and Health Sciences, Worcester, MA, USA.
Objective: This study examined the effects of various backpack loads on elementary schoolchildren’s posture and postural compensations as demonstrated by a change in forward head position.
Subjects: A convenience sample of 11 schoolchildren, aged 8-11 years participated.
Methods: Sagittal digital photographs were taken of each subject standing without a backpack, and then with the loaded backpack before and after walking 6 minutes (6MWT) at free walking speed. This was repeated over three consecutive weeks using backpacks containing randomly assigned weights of 10%, 15%, or 20% body weight of each respective subject. The craniovertebral angle (CVA) was measured using digitizing software, recorded and analyzed. (more…)