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The relationship between modern media and physical activity in western australian children owen carter senior research fellow centre for behavioural research.

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Presentation on theme: "The relationship between modern media and physical activity in western australian children owen carter senior research fellow centre for behavioural research."— Presentation transcript:

1 the relationship between modern media and physical activity in western australian children owen carter senior research fellow centre for behavioural research in cancer control curtin university of technology

2 “sedentary activities such as watching television are strongly associated with excessive adiposity and displaces time for physically active pursuits” Trost, S. (2005 p.73) Discussion paper for the development of recommendations for children's and youths‘ participation in health promoting physical activity

3 Doctors say the results show the problem of excessive screen time is so widespread that children's use of the media must be considered a serious public health issue …so engrossed in sedentary screen-based recreation that it reduces their involvement in sport, music and other leisure pursuits.

4 Her results, published in the Journal of Paediatrics and Child Health, come from a study of 2750 children revealing big weight gains in children and adolescents despite improvements in physical fitness although there had always been a significant percentage of children who watched a lot of TV, the proportion spending two hours or more watching the set or computer was rising

5 Hours per day average hours spent using various modern media amongst WA children 15 min Gaming 24 min Computer 2 hrs 4 min TOTAL SCREEN USE 1hr 6 min TV 20 min Videos/DVDs

6 screen hours per day %39.8% total screen time per day

7 daily screen time vs. frequency of physical activity physically active behaviours screen hours per day r(1,858)=.065 p<.005 R 2 =.04% 2 hrs t(1,858)=1.507 p=NS <2 hrs2+ hrs

8

9 meta-analysis: screen time and physical activity 39 independent samples pooled N = effect size between TV and PA: “too small to be of clinical relevance” screen time alone unlikely to explain relationships between sedentary behaviour and health

10 32˚S

11 Midnight 2:00 AM4:00 AM 6:00 AM 8:00 AM 10:00 AM 12:00 PM 2:00 PM 4:00 PM 6:00 PM 8:00 PM 10:00 PM Midnight Shower Get dressed BreakfastTRANSIT Dinner SLEEP Homework 14 hrs 1.5 hrs 2.5 hrs SCHOOL Screen time 5.5 hrs “displacement hypothesis” (36%)

12 introduction of television (Norwich 1956)

13 introduction of television (Perth 1959) TV-16 hrs Radio7 hrs 42 min54 min Cinema3 hrs48 min Sport2 hrs 12 min2 hrs 34 min “Television’s most powerful rivals are outdoor play and unorganised social activities”

14 screen hours per day Norwich 1956 Perth 1961 WA 2003 Australia studies from viewing times stable for past 50 years ~2 hrs/day

15 CAPANS data consistent with international data screen time remains intractably stable screen time likely to displace other sedentary behaviours children have time for both physical activity and screen time human behaviour more complicated than single factors we are not the first generation to idolise the past conclusions

16 Ariel Rhiannon Carter (4 years) Sage Tiberius Carter (3 years)


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