title: Habitual moderate-to-vigorous physical activity is inversely associated with insulin resistance in Canadian first nations youth.
abstract: The aim of this study was to explore the relationship between insulin resistance (IR) and objectively measured habitual moderate-to-vigorous physical activity (MVPA) in First Nations youth. A cross-sectional study was conducted in 2 rural villages in northern British Columbia, Canada. Thirty-nine healthy youth (16 males and 23 females; age = 11.8 yrs +/- 2.2; range = 8.8-18.5 yrs) participated. PA was measured with ActiGraph GT1M accelerometers. The homeostasis model assessment estimate of IR (HOMA-IR) was used to define IR. Duration of MVPA was inversely related to HOMA-IR (r = -.44, p < .01). From the regression model, 30 min of habitual MVPA corresponded to HOMA-IR levels that were 15% lower. In conclusion, these findings suggest that active First Nations youth have lower HOMA-IR values.
authors.affiliation: School of Exercise Science, Physical and Health Education, University of Victoria, Victoria, British Columbia, Canada.
authors.forename: Marc S
authors.initials: MS
authors.lastname: Mitchell
authors.forename: Catherine A
authors.initials: CA
authors.lastname: Gaul
authors.forename: Patti-Jean
authors.initials: PJ
authors.lastname: Naylor
authors.forename: Constadina
authors.initials: C
authors.lastname: Panagiotopoulos
mesh_terms: D000293:Adolescent; D001786:Blood Glucose / Q000032:analysis; D015992:Body Mass Index; D001955:British Columbia; D002648:Child; D003430:Cross-Sectional Studies; D005260:Female; D015438:Health Behavior; D006801:Humans; D007333:Insulin Resistance; D008297:Male; D018670:Monitoring, Ambulatory / Q000295:instrumentation; D009043:Motor Activity; D011627:Puberty
chemical_list: D001786:Blood Glucose