One-shoulder carrying school backpack strongly affects gait swing phase and pelvic tilt: a case study

One-shoulder carrying school backpack strongly affects gait swing phase and pelvic tilt: a case study

Authors

Keywords:

backpack load, schoolbag carrying, pelvic angles, back pain

Abstract

The use of backpacks is common to both adults and children and often leads to the onset of musculoskeletal discomforts. Although a large number of studies have focused on the optimal load for children schoolbags, there is no general consensus. Here we report a 13-yr old girl case study, showing the impact of weight and wearing the school backpack on gait parameters. The variation of gait parameters and pelvis angles in different conditions were studied: without backpack (CTRL), or with backpack at 10% Body Weight (10BW), 15% BW (15BW) and 20% BW (20BW), carried “on both shoulders” (2S), “on one shoulder” (1S), or “with one hand” (1H). Swing phase was comparably modified by 2S/20BW and 1S/10BW conditions, suggesting that a lower backpack weight was sufficient to induce gait alterations when carried in asymmetrical conditions. Pelvic tilt, which was preserved by a two-shoulders distributed 10% BW load (2S/10BW), was strongly  reduced in asymmetrical condition (1S/10BW), suggesting that a low weight carried on a single shoulder generates postural modifications including reduction of pelvic tilting, which is known to be associated to low back pain.   

References

1. Perrone M, Orr R, Hing W, Milne N, Pope R. The Impact of Backpack Loads on School Children: A Critical Narrative Review. Int J Environ Res Public Health 2018; 15(11). https:/doi.org/10.3390/ijerph15112529

2. Drzał-Grabiec J, Snela S, Rachwał M, Podgórska J, Rykała J. Effects of carrying a backpack in an asymmetrical manner on the asymmetries of the trunk and parameters defining lateral flexion of the spine. Hum Factors 2015;5: 218–226. https://doi.org/10.1177/0018720814546531

3. Aprile I, Di Stasio E, Vincenzi MT, Arezzo MF, De Santis F, Mosca R. Briani C, Di Sipio E, Germanotta M, Padua L. The relationship between back pain and schoolbag use: a cross-sectional study of 5,318 Italian students. The Spine Journal 2016:16:748–755. https://doi.org/10.1016/j.spinee.2016.01.214

4. Dockrell S, Blake C, Simms C . Guidelines for schoolbag carriage: An appraisal of safe load limits for schoolbag weight and duration of carriage. WOR 2016;53:679–688. https://doi.org/10.3233/WOR-162260

5. Janakiraman B, Ravichandran H, Demeke S, Fasika S. Reported influences of backpack loads on postural deviation among school children: A systematic review. J Edu Health Promot 2017:6,41. https://doi.org/10.4103/jehp.jehp_26_15

6. Barbosa J, Marques MC, Izquierdo M, Neiva HP, Barbosa TM, Ramírez-Vélez R, Alonso-Martínez AM, García-Hermoso A, Aguado-Jimenez R, Marinho DA . Schoolbag weight carriage in Portuguese children and adolescents: a cross-sectional study comparing possible influencing factors. BMC Pediatr 2019;19:157. https://doi.org/10.1186/s12887-019-1519-2

7. Adeyemi AJ, Rohani JM, Abdul Rani MR. Backpack-back pain complexity and the need for multifactorial safe weight recommendation. Applied Ergonomics 2017;58:573–582. https://doi.org/10.1016/j.apergo.2016.04.009

8. Lehnen GC, Magnani RM, Souza GSS, Rodrigues FB, Andrade AO, Vieira MF. Effects of backpack loads and positions on the variability of gait spatiotemporal parameters in young adults. Res Biomed Eng 2017;33:277-284. https://doi.org/10.1590/2446-4740.03517

9. Laird RA, Keating JL, Ussing K, Li P, Kent P. Does movement matter in people with back pain? Investigating ‘atypical’ lumbo-pelvic kinematics in people with and without back pain using wireless movement sensors. BMC Musculoskelet Disord 2019:20:28. https://doi.org/10.1186/s12891-018-2387-x

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Published

10-04-2020

How to Cite

1.
One-shoulder carrying school backpack strongly affects gait swing phase and pelvic tilt: a case study. Acta Biomed [Internet]. 2020 Apr. 10 [cited 2024 Jun. 19];91(3-S):168-70. Available from: https://www.mattioli1885journals.com/index.php/actabiomedica/article/view/9435

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