Habitual Moderate-to-Vigorous Physical Activity Is Inversely Associated With Insulin Resistance in Canadian First Nations Youth

• Autores: Marc S. Mitchell, Catherine A. Gaul, Patti-Jean Naylor, Constadina Panagiotopoulos
• Localización: Pediatric exercise science, ISSN 0899-8493, Vol. 22, Nº. 2, 2010, págs. 254-265
• Idioma: inglés
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• Resumen

  • 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 = 11.8yrs ± 2.2; range = 8.8�18.5yrs) 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.