A descriptive correlation study was conducted in Hobbs, New Mexico, USA, to find the relationship between backpack use and back and neck pain among adolescent boys and girls. A higher percentage of girls than boys rated their pain as being moderate to extremely strong. The correlation between pain and backpack weight per body mass index among girls was positive and significant, but negative and non-significant among boys. The correlation between pain and backpack weight was positive and non-significant among both boys and girls. The correlation between pain and each of the variables of backpack weight per body weight, backpack weight per height, and backpack weight per body surface area was negative and non-significant among boys, but positive and non-significant among girls. Gender-based research studies with additional variables and safe backpack use education in schools are recommended.
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http://dx.doi.org/10.1111/j.1442-2018.2006.00284.x | DOI Listing |
Environ Int
December 2024
Swiss Tropical and Public Health Institute, 4123 Allschwil, Switzerland; University of Basel, 4001 Basel, Switzerland. Electronic address:
Exposure to extremely low frequency magnetic fields (ELF-MF) is ubiquitous in our daily environment. This study aims to provide a comprehensive overview of the ambient ELF-MF exposure in Switzerland and presents a novel environmental exposure matrix for exposure assessment and risk communication. Magnetic flux density levels (µT) were measured using a portable exposimeter carried in a backpack for the main ELF sources: railway power (16.
View Article and Find Full Text PDFTo (1) estimate the economic cost of disabling musculoskeletal pain in children and adolescents from a health care and societal perspective, (2) identify the characteristics of children and adolescents with higher costs, and (3) estimate the economic cost of children's pain to Brazil. Prospective cohort study. We recruited children and adolescents with disabling musculoskeletal pain from public and private schools.
View Article and Find Full Text PDFJ Pharm Bioallied Sci
July 2024
Department of Research, Mahatma Gandhi Institute of Medical Sciences, Sevagram, Wardha, Maharashtra, India.
Ergonomics
September 2024
College of Fashion and Design, Donghua University, Shanghai, China.
To enhance the prevention of shoulder pressure injuries in various load-bearing populations, the effects of shoulder morphology on pressure distribution were investigated. In this study, 69 participants underwent three-dimensional scanning, and based on shoulder morphological characteristic indicators, they were classified into four shoulder types. From these, 28 participants were selected to have the pressure within shoulder regions measured using a pressure-sensing vest while carrying a backpack load equivalent to 15% of their body weight.
View Article and Find Full Text PDFJ Biomech Eng
January 2025
Department of Mechanical Engineering, Quantitative Biosciences and Engineering Program, Colorado School of Mines, 1500 Illinois St, Golden, CO 80401.
Heavy load carriage is associated with musculoskeletal overuse injury, particularly in the lumbar spine. In addition, steep walking slopes and heavy backpacks separately require adaptation of torso kinematics, but the combined effect of sloped walking and heavy backpack loads on lumbar joint contact forces is unclear. Backpacks with hip belt attachments can reduce pressure under the shoulder straps; however, it is unknown if wearing a hip belt reduces lumbar spine forces.
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