The effect of single session CrossFit exercise on blood lipid profile in professional athletes, with consideration of blood plasma volume changes

The effect of single session of CrossFit exercise on blood lipid profile is not completely clear. The purpose of this study was to determine the single session of CrossFit exercise on the blood lipid profile of professional male athletes with consideration of blood plasma volume changes.

In this Causal-comparative study, 32 male athletes were selected as subjects (with mean of age 26.9±4.7 year, Height 177±5 cm, Weight 80.7±6.4 kg). Exercise session was consisting of 400 meters running on treadmill, triple dead lift, pull-up (30 repetition), swing of kettlebell (30 kg) and throwing of 20 sand balls. Blood sampling, CBC and biochemistry auto analyzer tests were used for measuring of plasma volume, Total Cholesterol (TC), Triglyceride (TG), Low Density Lipoprotein (LDL), High Density Lipoprotein (HDL), low density lipoprotein / High density lipoprotein (LDL/HDL) and Total Cholesterol / High Density Lipoprotein (TC/HDL) ratios. In addition, ANOVA with repeated measure and Bonferroni post hoc tests were used to examine the differences between variables in resting position, post exercise and after correction for the volume of plasma lost with using of SPSS version 25 software.

The results showed significant increase in lactic acid (P<0.001), TC (P<0.001), TG (P=0.006), LDL (P=0.001) HDL (P<0.001), LDL/HDL (P=0.005), TC/HDL(P<0.001). Also the results of study showed significant decrease in plasma volume (P<0.001). In addition, the significant results of some indices were removed by consideration of plasma volume change (P>0.05).

The single session of crossfit exercise is accompanied by an increment in blood lipid profile and the main reason is the decrease in blood plasma volume.