title: Associations between different types of physical activity and teachers' perceived mental, physical, and work-related health.
abstract: BACKGROUND
  The teaching profession is characterized by high levels of stress and physical complaints, which might be improved through regular participation in physical activity (PA). However, the effect of PA on mental and physical health is not always consistent and depends on the type of PA performed. The aim of this study was to examine the mental, physical, and work-related health of Flemish secondary school teachers and identify the impact on those health variables by demographic and teaching-related factors and various types of PA.
  
  
  METHODS
  This study included an online survey conducted across a representative sample of secondary school teachers (n = 1066, average age 40 years; 68 percent female). Level of PA and sitting time were estimated using the International Physical Activity Questionnaire, and perceived mental health and physical health were estimated using the Short Form 36. Work-related factors such as job satisfaction, occupational stress, and absenteeism were also collected. T-tests, ANOVAs, and linear regression analyses were performed.
  
  
  RESULTS
  Flemish secondary school teachers have poorer perceived mental and physical health than a general healthy population. This difference is particularly evident among female teachers, who reported lower perceived health, more occupational stress, and more absent days compared to their male colleagues. Higher participation in leisure-time PA was associated with a more positive perceived health. In contrast, higher levels of occupational PA and sitting time had a negative impact on perceived health. Total amount of PA, total amount of moderate-to-vigorous PA, transportation-related PA, and PA at home were not associated to teachers' perceived health.
  
  
  CONCLUSIONS
  Because secondary school teachers' levels of perceived health are low, they are an important target group for interventions aiming to improve health. Only leisure-time PA was associated with more positive perceived health. This finding may indicate that teachers performing more exercise during leisure time, or in a more autonomous way, may be more resistant to physical and mental health problems. Future research should verify whether promoting leisure-time PA among teachers has the potential to improve their mental and physical health, and counteract the negative associations between teachers' health and their occupational PA.
authors.affiliation: Department of Movement Education and Sportstraining, Faculty of Physical Education and Physiotherapy, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium. ibogaert@vub.ac.be.
authors.forename: Inge
authors.initials: I
authors.lastname: Bogaert
authors.forename: Kristine
authors.initials: K
authors.lastname: De Martelaer
authors.forename: Benedicte
authors.initials: B
authors.lastname: Deforche
authors.forename: Peter
authors.initials: P
authors.lastname: Clarys
authors.forename: Evert
authors.initials: E
authors.lastname: Zinzen
mesh_terms: D000041:Absenteeism; D000328:Adult; D000704:Analysis of Variance; D001530:Belgium; D004651:Employment / Q000523:psychology*; D015444:Exercise / Q000523:psychology*; D005178:Faculty / Q000706:statistics & numerical data*; D005260:Female; D006304:Health Status; D006801:Humans; D007588:Job Satisfaction; D007899:Leisure Activities / Q000523:psychology; D008297:Male; D001523:Mental Disorders; D008603:Mental Health; D008875:Middle Aged; D009043:Motor Activity; D012044:Regression Analysis; D057185:Sedentary Behavior; D013315:Stress, Psychological / Q000209:etiology; D011795:Surveys and Questionnaires