Influencia del tipo de jornada escolar en el peso de las mochilas escolares

Relationship between School Backpacks and Musculoskeletal Pain in Children 8 to 10 Years of Age: An Observational, Cross-Sectional and Analytical Study

“…The duration and frequency of pain and lifestyle habits were assessed using a questionnaire based on various questionnaires found in the literature: Survey to Assess Backpack Use and Neck and Back Pain [2] and the questions used by others authors [3,4,7,9,12,13,16,20]. The first questions (1-11) refer to lifestyle habits, and the last (12)(13)(14)(15)(16)(17)(18) refer to pain (File S1).…”

“…The effects of carrying excess weight in school backpacks has been the subject of several publications, and there are great discrepancies in the reported results [10,11]. Transporting and carrying a backpack weighing more than the recommended maximum itself imposes a risk, and the risk to children and adolescents is increased since they are in the period of growth and maturation of the neuromusculoskeletal system [12]. Therefore, the weight of the backpack must not exceed 10%-15% of the body weight of the child or adolescent [3,4,7,8,[12][13][14].…”

“…Transporting and carrying a backpack weighing more than the recommended maximum itself imposes a risk, and the risk to children and adolescents is increased since they are in the period of growth and maturation of the neuromusculoskeletal system [12]. Therefore, the weight of the backpack must not exceed 10%-15% of the body weight of the child or adolescent [3,4,7,8,[12][13][14]. Exceeding this value causes posterior displacement of the center of gravity, consequently, excess tension is generated in the muscles of the back of the neck and the back, an effect that is associated with spinal column pathology [15] and decreased lung volume [16].…”

“…This allows students to empty their backpacks and store the unnecessary contents to avoid carrying so much weight. Even so, it has been shown that much of the school population does not use these resources [3,7,12,20].…”

Current Backpack Weight Status for Primary Schoolchildren in Colima, Mexico

“…The weight and physical constitution of the child are the most important determining factors (Kovacs Foundation, 2011; Medina Cantillo, Moya, & Febrer Rotger, 2011). Bryant and Bryant (2014) also reported that professional organizations and researchers recommend weight not exceeding 10–15% of the child’s body weight, others suggest not exceeding 15% (Quintana Aparicio et al, 2005), and even other experts state not more than 15–20% (Quintana Aparicio et al, 2005).…”