Details

Autor(en) / Beteiligte

• Arngrímsson, Sigurbjörn Árni
• Sveinsson, Torarinn
• Gunnarsdóttir, Ingibjörg
• Pálsson, Gestur I
• Thorsdottir, Inga
• Jóhannsson, Erlingur

Titel

Objectively measured physical activity is independently associated with insulin resistance in children after adjusting for epidemiological estimates of body composition

Ist Teil von

• The FASEB journal, 2007-04, Vol.21 (5), p.A167-A168

Ort / Verlag

Federation of American Societies for Experimental Biology

Erscheinungsjahr

2007

Link zum Volltext

Quelle

Wiley Blackwell Single Titles

Beschreibungen/Notizen

• The relationship between physical activity (PA), body composition, and insulin resistance in children and adolescents was determined in a population based sample (n = 152) of 9 (34 boys, 42 girls) and 15 (43 boys, 33 girls) year‐olds from 18 randomly selected schools in Iceland. Body composition was assessed via body mass index (BMI), waist circumference adjusted for height (Waistadj), and sum of 4 skinfolds (SKF). PA (counts/day) was measured with accelerometers and fasting insulin (index of insulin resistance) was assessed via ECLIA. Sexual maturity was determined by self‐reported Tanner staging. Fasting insulin was related to all body composition variables (r = 0.41–0.52, p < 0.01) and PA (r = −0.19, p = 0.02) after adjusting for age, Tanner stage, and gender with SKF being the best predictor of insulin resistance. Statistical control for PA did not affect the relations between body composition and fasting insulin (r = 0.41–0.50, p < 0.01). Similarly, PA remained significantly related to fasting insulin after adjusting for BMI (r = −0.18, p = 0.03) and Waistadj (r = −0.16, p = 0.05) but not SKF (r = −0.08, p = 0.33). PA is an independent predictor of insulin resistance in children and adolescents after adjusting for commonly used epidemiological indices of body composition; however, better measures of obesity may abolish this relationship.