Backpacks with ergonomic features are recommended to mitigate the risk of developing low back pain due to carrying a heavy school backpack. A repeated measure study was conducted on 40 college-age students to investigate the immediate changes in magnitude and timing aspects of lumbo-pelvic coordination when carrying an ergonomically modified vs. a normal backpack relative to no backpack condition during trunk forward bending and backward return tasks. We found a smaller reduction in the thoracic range of rotation, an increase vs. a decrease in pelvic range of rotation and a larger reduction in lumbar flexion for a modified vs. a normal backpack. Furthermore, during the forward bending, a less in-phase motion for the modified backpack was observed. Our results suggest that participants have likely experienced larger spinal loads with the modified backpack; a conclusion that should be investigated in future to determine whether ergonomic backpacks can reduce the risk of low back pain in children. Practitioner summary: Research participants performed trunk bending and return closer to their habitual way under modified versus normal school backpack. From an equilibrium point of view, therefore, individuals are likely experiencing larger spinal loads during activities of daily living with a modified backpack. However, such a conclusion may change when considering stability requirements.
|Number of pages||9|
|State||Published - Oct 3 2018|
Bibliographical noteFunding Information:
Cazmon Suri and Iman Shojaei were supported in part by an award (5R03HD086512-02) from the National Center for Medical Rehabilitation Research (NIH-NICHD) and an award from the Office of the Assistant Secretary of Defense for Health Affairs, through the Peer Reviewed Orthopaedic Research Program (award #W81XWH-14-2-0144).
Cazmon Suri and Iman Shojaei were supported in part by an award (5R03HD086512-02) from the National Center for Medical Rehabilitation Research (NIH-NICHD) and an award from the Office of the Assistant Secretary of Defense for Health Affairs, through the Peer Reviewed Orthopaedic Research Program (award #W81XWH-14-2-0144). The authors thank Aurian Vaez, Laura Schoettmer, Christopher Force, Christopher Dowling, Aaron Defosse, Korbin Jackson, and Carson Elrod for assistance with data collection.
© 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.
- School backpack
- lumbo-pelvic coordination
- trunk forward bending and backward return
ASJC Scopus subject areas
- Human Factors and Ergonomics
- Physical Therapy, Sports Therapy and Rehabilitation