Relationship between Sedentary Time, Physical Activity and Multiple Lifestyle Factors in Children

Michael Sheldrick, RICHARD TYLER, Kelly A Mackintosh, Gareth Stratton

Research output: Contribution to journalArticle (journal)peer-review

16 Citations (Scopus)
93 Downloads (Pure)


An improved understanding of relationships between moderate-to-vigorous physical activity (MVPA), screen-time and lifestyle factors is imperative for developing interventions, yet few studies have explored such relationships simultaneously. Therefore, the study’s aim was to examine the relationship between sufficient MVPA (≥60 min·day–1) and excessive screen-time (≥2 h·day–1) with lifestyle factors in children. In total, 756 children (10.4±0.6 years) completed a questionnaire, which assessed sleep duration, MVPA, homework/reading, screen-time and diet, and a 20 metre multi-stage shuttle run test to assess cardiorespiratory fitness (CRF). Body mass and stature were measured and used to calculate BMI (body mass index) for age/sex z-scores. Fruit and vegetable consumption and CRF were positively associated with sufficient MVPA, irrespective of sex (p < 0.05). Excessive screen-time was positively associated with sugary snack consumption in boys and girls, and diet soft drink intake in boys (p < 0.05). In addition, excessive screen-time was negatively associated with MVPA before school for both boys and girls, as well as with sleep duration and fruit and vegetable consumption for girls (p < 0.05). Sufficient MVPA and excessive screen-time were associated with healthy and unhealthy factors, respectively, with relationships sometimes differing by sex. Future health promoting interventions should consider targeting change in multiple lifestyle factors.
Original languageEnglish
Pages (from-to)1-16
Number of pages16
JournalJournal of Functional Morphology and Kinesiology
Issue number15
Early online date2 Mar 2018
Publication statusPublished - 2018


  • youth
  • moderate-to-vigorous physical activity
  • screen-time
  • health
  • diet
  • behaviours


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