title: Associations among blood pressure, salt consumption and body weight status of students from south-western Ontario.
abstract: OBJECTIVE
  The purpose was to examine the associations among body weight status, blood pressure and daily Na intake among grade 7 students from south-western Ontario, Canada.
  
  
  METHODS
  Cross-sectional. Data were collected using the Food Behaviour Questionnaire, including a 24 h diet recall. Measured height and weight were used to determine BMI. Blood pressure was taken manually using mercury sphygmomanometers.
  
  
  METHODS
  Twenty-six schools in south-western Ontario, Canada.
  
  
  METHODS
  Grade 7 students (n 1068).
  
  
  RESULTS
  Body weight status indicated 1 % were underweight, 56 % normal weight, 23 % overweight and 20 % were obese. Mean systolic blood pressure (SBP) and diastolic blood pressure (DBP) were 108·3 (sd 10·3) mmHg and 66·0 (sd 7·5) mmHg, respectively, and mean Na intake was 2799 (sd 1539) mg/d. Bivariate analyses suggested that SBP (P < 0·001) and DBP (P < 0·001) were significantly different by body weight status, yet no associations were observed for Na. Adjusted for gender, ethnicity and under-reporting, participants were more likely to be overweight/obese if they had higher SBP (v. lower: OR = 1·06, 95 % CI 1·05, 1·08, P < 0·001), higher DBP (v. lower: OR = 1·02, 95 % CI 1·00, 1·04, P = 0·043) and higher intakes of Na (3rd v. 1st quartile: OR = 1·72, 95 % CI 1·14, 2·59, P = 0·009; 4th v. 1st quartile: OR = 2·88, 95 % CI, 1·76, 4·73, P < 0·001).
  
  
  CONCLUSIONS
  High intakes of Na, coupled with high SBP and DBP, were associated with overweight and obesity status among the grade 7 sample from south-western Ontario, Canada.
authors: 1 Department of Kinesiology, University of Windsor, 401 Sunset Avenue, Windsor, ON N9B 3P4, Canada.
authors: Sarah J
authors: SJ
authors: Woodruff
authors: 2 Faculty of Nursing, University of Windsor, Windsor, ON, Canada.
authors: Katherine
authors: K
authors: Fryer
authors: 3 Faculty of Education, University of Windsor, Windsor, ON, Canada.
authors: Ty
authors: T
authors: Campbell
authors: 2 Faculty of Nursing, University of Windsor, Windsor, ON, Canada.
authors: Mary
authors: M
authors: Cole
mesh_terms: D000293:Adolescent; D001794:Blood Pressure; D015992:Body Mass Index; D002648:Child; D003430:Cross-Sectional Studies; D004032:Diet; D005260:Female; D006801:Humans; D006973:Hypertension / Q000209:etiology* / Q000503:physiopathology; D008297:Male; D011939:Mental Recall; D009765:Obesity / Q000209:etiology*; D016017:Odds Ratio; D009864:Ontario; D050177:Overweight; D017673:Sodium Chloride, Dietary / Q000008:administration & dosage* / Q000009:adverse effects; D013334:Students
chemical_list: D017673:Sodium Chloride, Dietary