RESUMO
PURPOSE: the aim of this study was to analyze the association between upper limb muscular fitness and spinal pain in the cervical, thoracic, and lumbar regions among young people. METHODS: Cross-sectional study involving a probabilistic sample of 1054 participants (547 female) with ages ranging from 10 to 17 years, from Brazil. The dependent variable was pain in the cervical, thoracic, and lumbar regions of the spine, assessed by a self-report instrument. The independent variable was muscular fitness, verified using the 90° push-up test with the cut-offs proposed by FITNESSGRAM. The covariates were age, sex, socioeconomic status, physical activity, and body mass index. Ordinal logistic regression was adopted to conduct the multivariate association and estimate the Odds Ratios (OR). Two separate analyses were conducted: one with the whole sample and the other with only participants who reported pain. RESULTS: The prevalences of spine pain in the cervical, thoracic, and lumbar regions were 24.4, 28.3, and 31.0%. In the whole sample, young people who achieved the criterion-referenced standard for muscular fitness were less likely to present high intensity pain in the thoracic region (OR = 0.67, 0.50-0.90). The same occurred when analyzing only those who reported pain for cervical region (OR = 0.48, 0.29-0.79). No association was found between muscular fitness and lumbar pain. CONCLUSIONS: Upper limb muscular fitness can be used as an additional tool to prevent high levels of spine pain in the thoracic region among young people as well as the severity of cervical pain in those who report pain.
Assuntos
Dor Lombar , Coluna Vertebral , Adolescente , Brasil/epidemiologia , Criança , Estudos Transversais , Exercício Físico , Feminino , Humanos , Aptidão FísicaRESUMO
The purpose of this study was to analyze factors associated with musculoskeletal disorders and disability in elementary teachers. This is a cross-sectional study from a representative sample of Brazilian elementary teachers (nâ¯=â¯530). Data were collected using a self-report questionnaire. Sociodemographic, work-related, and behavioural characteristics were the exposure variables. The outcomes were musculoskeletal symptoms, disability, and musculoskeletal disease. Musculoskeletal disease was used as an outcome, as well as an exposure variable when musculoskeletal symptoms and disability were the outcomes. Prevalence ratios (PR) were estimated by Poisson regression. Variables associated with musculoskeletal symptoms were: length of employment ≥20 years (PRâ¯=â¯1.41), perception of inappropriate infrastructure of schools (RPâ¯=â¯1.21), physical activity (PRâ¯=â¯0.80), and high stress (PRâ¯=â¯1.16) for upper limbs; high stress (PRâ¯=â¯1.23) and perception of inappropriate infrastructure of schools (RPâ¯=â¯1.16) for back/neck; common mental disorders (PRâ¯=â¯1.14 to 1.30), and musculoskeletal disease (PRâ¯=â¯1.19-1.62) for all regions of the body. Musculoskeletal disease (PRâ¯=â¯2.46 to 3.37) and perception of inappropriate infrastructure of schools (PRâ¯=â¯1.53 to 1.95) were associated to disability in all regions of the body. Length of employment >20 years was associated with disability in the upper limbs (PRâ¯=â¯2.06). Common mental disorders were associated with disability in the upper limbs (PRâ¯=â¯1.53) and back and neck (PRâ¯=â¯1.47) while sitting time >120â¯min/day was inversely associated with disability in the lower limbs (PRâ¯=â¯0.64). The predictors of musculoskeletal disease were length of employment ≥20 years (PRâ¯=â¯1.97), perception of inappropriate infrastructure of schools (PRâ¯=â¯1.57), strength and flexibility activities (PRâ¯=â¯1.66), TV viewing timeâ¯≥â¯120â¯min (PRâ¯=â¯1.37), sports practice (PRâ¯=â¯0.39), and common mental disorders (PRâ¯=â¯1.39). Although the associations varied according to the outcome, common mental disorders, perception of inappropriate infrastructure of schools, high stress, and length of employment are variables to be considered in the prevention of musculoskeletal disorders in teachers. When analyzed as an exposure variable, musculoskeletal disease was the main predictor of musculoskeletal symptoms and disability.