Response of Leptin and C-Reactive Protein to a Single Session Circuit Resistance Exercise in Over-weight Girl Student

Overweight is associated with hormonal and inflammation changes. The acute effect of circuit resistance exercise on these inflammation factors in the obese persons and particularly in girls has almost been overlooked. The purpose of the present study was to examine the response of plasma leptin and CRP to one session of resistance exercise in over-weight girls. For this purpose, 10 healthy over-weight girls (age average: 20.44±1.5 years old, height: 160±4.8 cm., weight: 69±6.5 kg., BMI≥26.5 kg/m2, and fat percent: 37.3±3.6) were selected. Incremental circuit resistance training included 10 stations and three circles for which the subjects were trained with 40, 50, and 60 percent of 1RM, respectively. The rest between the stations and circles was 30 seconds and 2-3 minutes, respectively. The blood sample was taken before and immediately after training. One week later, the same samples were taken under similar conditions without training. Statistical analysis was performed using SPSS software V.11.0 and the data were analyzed using a repeated measures analysis of variance (ANOVA). Exercise did not cause a significant change on the plasma level of leptin (P=0.63), C-Reactive Protein (P=0.22) and red blood sell (P=0.64). However, exercise significantly increased white blood sell (P<0.05), and decreased hematocrit (P<0.05) and mean corpuscular volume (P<0.05). Executing exercise with higher intensity and periods and higher energy expenditure and/or exercising in fasting state can probably create more desirable changes in these variables which could be considered in future studies.