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Journal of Exercise Nutrition & Biochemistry 2013;17(3):81-86.
ORIGINAL PAPER : Serum vaspin levels and its relation to body fat and fitness
Abstract
We investigated the relationships of serum vaspin levels with body fat and cardio/respiratory fitness (CFR) in young men. In a cross-sectional study, we examined 396 young Korean men (mean age, 23.8 ± 2.5 years) who were recruited from two campuses of S university. Body fatness and fasting levels of serum insulin, adiponectin, and vaspin were measured. CRF was quantified as the minute volume of oxygen consumption (VO2) measured during a graded treadmill test. In the present analyses, we determined individuals to have either low (bottom 25%), middle (mid-level 50%), or high (upper 25%) CRF levels based on their age-adjusted VO2 max values. We also assigned individuals to either a lean weight (LN) or obese (OB) group based on body fatness levels,in which a BMI value 25 kg/m2 was used as an indicator of Pacific-Asian obesity. Group analyses showed significant interaction effects between body fatness and CRF on BMI, fasting insulin, and vaspin, such that among men with low CRF within the obese group had significantly higher fasting insulin (P = 0.001), HOMA-IR (P < 0.001), and serum vaspin (P = 0.017) levels than the lean group. Further, multiple linear regression analyses showed that CRF (P = 0.023), BMI, and fasting insulin (P = 0.050) were independent predictors of individual variation in serum vaspin concentrations. In conclusion, the current findings of the study suggest that low CRF along with high body fatness and an elevated fasting insulin level are associated with elevated serum vaspin levels in young Korean men.
Key Words: body fat, physical fitness, risk factors, metabolic syndrome, insulin resistance


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