{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T10:37:46Z","timestamp":1777891066978,"version":"3.51.4"},"reference-count":31,"publisher":"SAGE Publications","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["WOR"],"published-print":{"date-parts":[[2023,4,18]]},"abstract":"<jats:p>BACKGROUND: Backpacks used by children is a global concern, because may cause musculoskeletal discomforts and pain. OBJECTIVE: The purpose of this study was to test the usability and effects on gait kinematics wearing the Trunkpack versus a traditional backpack and no backpack. METHODS: Twenty-four children (9 to 11 years old) from a public school participated in this study. The usability was evaluated after a five-week testing period using a questionnaire. Gait kinematics was evaluated (Vicon) when the children were wearing a standard backpack, an optimized backpack (Trunkpack), and no backpack. Both backpacks were loaded with 10% of body weight. RESULTS: Was observed more trunk, hip and knee flexion when the children carried a standard backpack in comparison using the Trunkpack and not carrying a backpack (p\u200a&lt;\u200a0.01). The Trunkpack and no backpack were similar. The Trunkpack was well accepted by the schoolchildren (81% positive responses), 79% liked the head opening, 88% liked the waist straps, and 83% liked the facility to put and take objects in and out of the Trunkpack. CONCLUSION: Trunkpack requires less postural adjustments during gait than a standard backpack. Gait kinematics with the Trunkpack was comparable to the gait without carrying a backpack.<\/jats:p>","DOI":"10.3233\/wor-210261","type":"journal-article","created":{"date-parts":[[2022,12,13]],"date-time":"2022-12-13T12:02:08Z","timestamp":1670932928000},"page":"1419-1427","source":"Crossref","is-referenced-by-count":1,"title":["Usability and effects on gait of an optimized schoolchildren backpack"],"prefix":"10.1177","volume":"74","author":[{"given":"Jansen Atier","family":"Estr\u00e1zulas","sequence":"first","affiliation":[{"name":"School of Health, Amazonas State University, Manaus, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jaisson Agne","family":"Estr\u00e1zulas","sequence":"additional","affiliation":[{"name":"School of Health, Amazonas State University, Manaus, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rodrigo Ghedini","family":"Gheller","sequence":"additional","affiliation":[{"name":"Biomechanics Laboratory, Center of Sports, Federal University of Santa Catarina, Trindade Campus, Florian\u00f3polis, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Inae Caroline","family":"Gadotti","sequence":"additional","affiliation":[{"name":"Department of Physical Therapy, Florida International University, Miami, FL, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ant\u00f4nio Renato Pereira","family":"Moro","sequence":"additional","affiliation":[{"name":"Department of Production Engineering, Federal University of Santa Catarina, Trindade Campus, Florian\u00f3polis, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Edgar Ramos","family":"Vieira","sequence":"additional","affiliation":[{"name":"Department of Physical Therapy, Florida International University, Miami, FL, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","reference":[{"issue":"1","key":"10.3233\/WOR-210261_ref1","doi-asserted-by":"crossref","first-page":"222","DOI":"10.1186\/1756-0500-7-222","article-title":"Musculoskeletal pain and school bag use: A cross-sectional study among Ugandan pupils","volume":"7","author":"Mwaka","year":"2014","journal-title":"BMC Res Notes"},{"key":"10.3233\/WOR-210261_ref2","doi-asserted-by":"crossref","first-page":"175","DOI":"10.3233\/WOR-193071","article-title":"Musculoskeletal problems and backpack carriage among students in Nigeria","volume":"56","author":"Abaraogu","year":"2020","journal-title":"Work"},{"issue":"1","key":"10.3233\/WOR-210261_ref3","doi-asserted-by":"crossref","first-page":"39","DOI":"10.1515\/hukin-2015-0005","article-title":"The effects of bag style on muscle activity of the trapezius, erector spinae and latissimus dorsi during walking in female university students","volume":"45","author":"Hardie","year":"2015","journal-title":"Journal of Human Kinetics"},{"issue":"2","key":"10.3233\/WOR-210261_ref4","doi-asserted-by":"crossref","first-page":"247","DOI":"10.1097\/01.brs.0000150505.59690.1b","article-title":"Backpacks, back pain, sagittal spinal curves and trunk alignment in adolescents: A logistic and multinomial logistic analysis","volume":"30","author":"Korovessis","year":"2005","journal-title":"Spine"},{"issue":"2","key":"10.3233\/WOR-210261_ref5","doi-asserted-by":"crossref","first-page":"187","DOI":"10.1097\/00007632-200201150-00014","article-title":"Backpacks on! 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