Abstract

BackgroundPrevious studies have shown that physical training and natural diet able to change the expression and concentration of peptides and proteins. Myokines and adipokines play an important role in metabolism and metabolic syndrome. Therefore, the purpose of the present study was to investigate the effect of high-intensity interval training (HIIT) and supplementation of flaxseed oil on plasma irisin, nesfatin-1 and resistin in male rats.MethodsForty adult male rats were randomly divided into four groups (ten in each group) including Control-Saline (CS), Training-Saline (TS), Control-FlaxOil supplement (CO), and Training-FlaxOil supplement (TO). The training groups performed for 10 weeks and 5 sessions each week, interval training with 90–95% VO2max on rodent treadmill, and supplement groups received flaxseed oil (300 mg / kg). Five days after the last training session, rats were sacrificed. Blood samples were taken from the heart and plasma was evaluated.ResultsExercise Training significantly increased plasma levels of irisin (P = 0.019), nesfatin-1 (P = 0.01), and decreased resistin (P = 0.01). Flaxseed oil significantly reduced plasma resistin levels (P = 0.02). Plasma irisin levels in the supplementation group were higher than all groups (P = 0.041).ConclusionThere was a significant positive correlation between plasma levels of irisin with nesfatin-1 and negative correlation with resistin. HIIT program with flaxseed oil as a modality can create a metabolic crosstalk between skeletal muscle and adipose tissues and have health benefits.

Highlights

  • Previous studies have shown that physical training and natural diet able to change the expression and concentration of peptides and proteins

  • Using post hoc test showed that high-intensity interval training (HIIT) significantly increased plasma irisin levels compared to the control group (P = 0.019)

  • Plasma irisin levels were higher in the TS group than Control-FlaxOil supplement (CO) group (P = 0.011)

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Summary

Introduction

Previous studies have shown that physical training and natural diet able to change the expression and concentration of peptides and proteins. The purpose of the present study was to investigate the effect of high-intensity interval training (HIIT) and supplementation of flaxseed oil on plasma irisin, nesfatin-1 and resistin in male rats. Irisin is a remarkable myokine/adipokine/ neurokinin that has recently attracted the attention of researchers [3]. Irisin secretion improves metabolic syndrome and glycemia [4]. Skeletal muscle irisin induces muscle hypertrophy [5], and acts on other tissues such as adipose tissues and induces weight loss by converting white fat into brown fat [6]. The mechanism of the effects of irisin on adipose tissue is has not been clearly understood. A previous study [7] showed that irisin affects white adipocytes via browning genes including Uncoupling

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