Lee Shau Kee School of Business and Administration, Hong Kong Metropolitan University, Hong Kong SAR.
Department of Health & Physical Education, The Education University of Hong Kong, Hong Kong SAR.
Work. 2024;79(2):683-694. doi: 10.3233/WOR-230628.
Trolley bags have gained popularity among students, but there is limited research comparing them to backpack-style school bags.
This study aimed to compare how carrying a backpack versus a trolley bag affects the activity of trunk and lower limb muscles in secondary school students.
Electromyographic activity was measured in 25 students (13.4±1.1 years) as they walked on level ground and up/down stairs while carrying both types of bags. The activity of the gastrocnemius, tibialis anterior, semitendinosus, rectus femoris, lumbar erector spinae, and rectus abdominis muscles was assessed on both the dominant and non-dominant sides.
The study found significantly reduced muscle activation in most of the targeted muscles when walking on level ground with the trolley bag and when going up/down stairs with the backpack.
Lifting a trolley bag depends on the slope of the walking surface and is more efficient on level ground, while carrying a backpack is more efficient when going up and down stairs. Since it is not practical to switch bags when encountering stairs in schools, a bag with a mixed model design incorporating features of both trolley and backpack may be more beneficial and practical for students to use. Students, parents, and teachers should be aware of the injury risks associated with carrying different types of bags.
手推车书包在学生中越来越受欢迎，但将其与背包式书包进行比较的研究有限。
本研究旨在比较背背包和手推车书包对中学生躯干和下肢肌肉活动的影响。
本研究对 25 名学生（13.4±1.1 岁）进行了肌电图测量，这些学生在平地和上下楼梯时分别携带这两种书包行走。在优势侧和非优势侧评估了小腿三头肌、胫骨前肌、半腱肌、股四头肌、腰椎竖脊肌和腹直肌的活动。
研究发现，在手推车上平地行走和背背包上下楼梯时，大多数目标肌肉的肌肉激活明显减少。
提起手推车书包取决于行走表面的坡度，在平地更有效，而背背包上下楼梯更有效。由于在学校遇到楼梯时不可能更换书包，因此对于学生来说，使用具有混合模型设计、结合手推车和背包特点的书包可能更有益和实用。学生、家长和教师应该意识到携带不同类型书包的相关受伤风险。
