There is a large body of evidence from all study design s which suggests that decreasing any type of sedentary time is associated with lower health risk in youth aged 5 - 17 years .
In particular , the evidence suggests that daily TV viewing in excess of 2 hours is associated with reduced physical and psychosocial health , and that lowering sedentary time leads to reductions in BMI
Accumulating evidence suggests that , independent of physical activity levels , sedentary behaviours are associated with increased risk of cardio-metabolic disease , all-cause mortality , and a variety of physiological and psychological problems .
Therefore , the purpose of this systematic review is to determine the relationship between sedentary behaviour and health indicators in school-aged children and youth aged 5 - 17 years .
Reporting of trials presented in conference abstracts needs to be improved.
OBJECTIVES To assess how trial information reported in conference abstract s differs to their subsequent full publication . METHODS R and omized trials reported at the American Society of Clinical Oncology conference ( 1992 ) were identified . CENTRAL and PubMed ( December 2002 ) were search ed to identify corresponding full publications . A checklist ( based on CONSORT ) was used to compare abstract s for 37 trials with their full publication . RESULTS Some aspects were well reported . Ninety-five percent of study objectives , 92 % of participant eligibility , 100 % of trial interventions , and 84 % of primary outcomes were the same in both abstract and full publication . Other areas were more discrepant . Forty-six percent reported the same number of participants r and omized in the abstract and full publication ; only 22 % reported the same number analyzed ( median number analyzed per trial was 96 for abstract s and 117 for full publications ) . Eighty-two percent of trials were closed to follow-up in the full publication compared to 19 % of abstract s. Lack of information was a major problem in assessing trial quality : no abstract s reported on allocation concealment , 16 % reported on blinding and 14 % reported intention to treat analysis . These figures were 49 , 19 , and 46 % , respectively , for full publications . CONCLUSION The information given for trials in conference proceedings can be unstable , especially for trials presenting early or preliminary results , and needs to be improved
There is a large body of evidence from all study design s which suggests that decreasing any type of sedentary time is associated with lower health risk in youth aged 5 - 17 years .
In particular , the evidence suggests that daily TV viewing in excess of 2 hours is associated with reduced physical and psychosocial health , and that lowering sedentary time leads to reductions in BMI
Accumulating evidence suggests that , independent of physical activity levels , sedentary behaviours are associated with increased risk of cardio-metabolic disease , all-cause mortality , and a variety of physiological and psychological problems .
Therefore , the purpose of this systematic review is to determine the relationship between sedentary behaviour and health indicators in school-aged children and youth aged 5 - 17 years .