Immediate responses to backpack carriage on postural angles in young adults: A crossover randomized self-controlled study with repeated measures

Work : a Journal of Prevention, Assessment, and Rehabilitation
U O AbaraoguObed Ewelunta

Abstract

Heavy backpacks have been associated with various postural changes and consequently musculoskeletal disorders. We evaluated the immediate responses of varying backpack loads on cranio-vertebral angle (CVA), sagittal shoulder angle (SSA) and trunk forward lean (TFL) of young adults between the ages of 18-25 years. This was a 3×3 cross over randomized controlled study with repeated measures among a convenience sample of young adults (n = 30; 50% male, 50% female). Each participant in a standing posture was assessed at four different loads: no backpack, carrying backpack of 5%, 10%, and 15% of body weight (BW). A sagittal photograph was taken of the area of the body corresponding to spinal angle during each of these test conditions to allow for later analysis of postural deviations. Comparisons of the mean deviations of the different postural angles from baseline and between test conditions were made using ANOVA at p≤0.05. Generally, there was a trend toward a decrease in the CVA and TFL with increasing backpack loads. Specifically, a significant decrease was seen for TFL at10% and 15% BW loads when compared with no load condition. In contrast, the decrease in CVA was only significant between no load condition and 15% body weight ...Continue Reading

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Citations

Dec 24, 2019·Work : a Journal of Prevention, Assessment, and Rehabilitation·Ukachukwu Abaraogu
Dec 11, 2019·The Journal of Sports Medicine and Physical Fitness·Serap AlsancakAli K Özgün
Feb 3, 2020·Work : a Journal of Prevention, Assessment, and Rehabilitation·Lee DaffinMark G L Sayers

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