title: The effect of a computer-related ergonomic intervention program on learners in a school environment.
abstract: BACKGROUND
  The interest in school ergonomic intervention programs and their effects on musculoskeletal pain is increasing around the world.
  
  
  OBJECTIVE
  The objective of this longitudinal randomized control trial was to implement and measure the effects of a computer-related ergonomics intervention on grade eight learners in a school environment in Johannesburg South Africa (a developing country).
  
  
  METHODS
  The sample comprised of a control group (n= 66) and an intervention group (n= 61). The outcome measures used were posture assessment using the Rapid Upper Limb Assessment tool (RULA) and the prevalence of musculoskeletal pain using a visual analogue scale (VAS). Measurements were done at baseline, three months and six months post intervention.
  
  
  RESULTS
  The results showed that the posture of the intervention group changed significantly from an Action Level 4 to an Action level 2 and Action level 3, indicating a sustained improvement of learners' postural positions whilst using computers. The intervention group showed a significant reduction in the prevalence of musculoskeletal pain from 42.6% at baseline to 18% six months post intervention (p< 0.003).
  
  
  CONCLUSIONS
  In conclusion, the results indicated that a computer-related intervention program for grade eight learners in a school environment is effective and that behavioural changes can be made that are sustainable over a period of six months.
authors: Department of Physiotherapy, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
authors: Ingrid
authors: I
authors: Sellschop
authors: Department of Physiotherapy, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
authors: Hellen
authors: H
authors: Myezwa
authors: Department of Physiotherapy, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
authors: Witness
authors: W
authors: Mudzi
authors: School of Health Sciences, Faculty of Health Sciences, University of Limpopo, South Africa.
authors: Nonceba
authors: N
authors: Mbambo-Kekana
mesh_terms: D003201:Computers; D006804:Ergonomics; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D059352:Musculoskeletal Pain / Q000453:epidemiology* / Q000517:prevention & control; D011187:Posture; D015995:Prevalence; D012574:Schools; D013019:South Africa / Q000453:epidemiology
keywords: RULA; behaviour change; grade eight learners; musculoskeletal pain; posture