title: Physical activity interventions in children and young people with Type 1 diabetes mellitus: a systematic review with meta-analysis.
abstract: OBJECTIVE
  To synthesize evidence from randomized and non-randomized studies of physical activity interventions in children and young people with Type 1 diabetes so as to explore clinically relevant health outcomes and inform the promotion of physical activity.
  
  
  METHODS
  We conducted a search of CINAHL Plus, the Cochrane Library, EMBASE, MEDLINE, PsycINFO, SCOPUS, SportDiscus and Web of Science between October and December 2012. Eligible articles included subjects aged ≤18 years with Type 1 diabetes and a physical activity intervention that was more than a one-off activity session. Physiological, psychological, behavioural or social outcomes were those of interest.
  
  
  RESULTS
  A total of 26 articles (10 randomized and 16 non-randomized studies), published in the period 1964-2012, were reviewed. Although there was heterogeneity in study design, methods and reporting, 23 articles reported at least one significant beneficial health outcome at follow-up. Meta-analyses of these studies showed potential benefits of physical activity on HbA1c (11 studies, 345 participants, standardized mean difference -0.52, 95% CI -0.97 to -0.07; P = 0.02), BMI (four studies, 195 participants, standardized mean difference -0.41, 95% CI -0.70 to -0.12; P = 0.006) and triglycerides (five studies, 206 participants, standardized mean difference -0.70, 95% CI -1.25 to -0.14; P = 0.01).The largest effect size was for total cholesterol (five studies, 206 participants, standardized mean difference -0.91, 95% CI -1.66 to -0.17; P = 0.02).
  
  
  CONCLUSIONS
  Physical activity is important for diabetes management and has the potential to delay cardiovascular disease, but there is a lack of studies that are underpinned by psychological behaviour change theory, promoting sustained physical activity and exploring psychological outcomes. There remains a lack of knowledge of how to promote physical activity in people with Type 1 diabetes.
authors: School of Health Sciences, University of Nottingham.
authors: H
authors: H
authors: Quirk
authors: H
authors: H
authors: Blake
authors: R
authors: R
authors: Tennyson
authors: T L
authors: TL
authors: Randell
authors: C
authors: C
authors: Glazebrook
mesh_terms: D000293:Adolescent; D002318:Cardiovascular Diseases / Q000150:complications / Q000517:prevention & control; D002648:Child; D003131:Combined Modality Therapy; D003922:Diabetes Mellitus, Type 1 / Q000097:blood / Q000150:complications / Q000628:therapy*; D003925:Diabetic Angiopathies / Q000517:prevention & control; D058065:Diabetic Cardiomyopathies / Q000517:prevention & control; D019317:Evidence-Based Medicine; D015444:Exercise; D006442:Glycated Hemoglobin / Q000032:analysis; D006801:Humans; D006943:Hyperglycemia / Q000517:prevention & control*; D007003:Hypoglycemia / Q000517:prevention & control*; D009043:Motor Activity
chemical_list: D006442:Glycated Hemoglobin; C517652:hemoglobin A1c protein, human