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Ninety-five 8- to 12-year-old elementary school students (56% girls; 88% car or bus riders) participated. Their school backpacks were weighed, and their age, gender, and mode of transportation to school were recorded. Only 40% of the sample carried backpacks that were less than 10% of their body weights. Five percent of the students\u2019 backpacks exceeded 20% of their body weights. Neither age group nor gender significantly predicted relative backpack weight or relative weight levels. Recommendations are made for ways to reduce the weight these young children carry.<\/jats:p>","DOI":"10.1177\/1059840513495417","type":"journal-article","created":{"date-parts":[[2013,6,29]],"date-time":"2013-06-29T00:18:59Z","timestamp":1372465139000},"page":"19-23","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":11,"title":["Relative Weights of the Backpacks of Elementary-Aged Children"],"prefix":"10.1177","volume":"30","author":[{"given":"Benjamin P.","family":"Bryant","sequence":"first","affiliation":[{"name":"Liberty Middle School, Tampa, FL, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Judith B.","family":"Bryant","sequence":"additional","affiliation":[{"name":"Department of Psychology, University of South Florida, Tampa, FL, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2013,6,27]]},"reference":[{"key":"bibr1-1059840513495417","unstructured":"American Academy of Orthopaedic Surgeons. 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