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Aerobic exercise after high carbohydrate and high protein diets, but not high fat diet, causes an increases of Orexin-A and BDNF in overweight young men
Poster Presentation
Paper ID : 1568-11THCONF
Authors
1MSc of Exercise Physiology, Department of Exercise Physiology, Shahid Chamran University of Ahvaz, Ahvaz, Iran
2Department of Exercise Physiology, Shahid Chamran Univercity of Ahvaz, Ahvaz, Iran.
3گروه فیزیولوژی ورزشی، دانشگاه شهید چمران اهواز
4Hyperlipidemia Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
Abstract
Introduction: Obesity and overweight caused by diet are one of the main factors affecting on Orexin-A and BDNF. Therefore, the purpose of this study was to investigate the effect of acute aerobic activity following the consumption of four different diets on serum levels of Orexin-A and BDNF in overweight men.
Methodology: In this single-blinded crossover study, 10 overweight men (aged 23± 6.1 and BMI 29.26 ± 0.47), who attended in physiology lab in four separate sessions at weekly intervals. In each session, respectively, after eating Normal (N), High carbohydrate (HCHO), High protein (HP) and High-fat (HF) diets, the subjects performed 30 min treadmill test at 60-70% of maximum heart rate. In each session three blood samples were taken in fasting, two hours after a meal (before exercise) and after exercise.
Results: Serum levels of Orexin-A, were significantly increased after acute aerobic exercise following consumption of HCHO (P≤0.006), HP (P≤ 0.018) and N diets (P≤0.045), but did not increase after HF diet (P≤0.084). Serum BDNF levels increased significantly after aerobic exercise following HCHO (P≤ 0.001), HP (P≤ 0.008) and N diets (P≤0.047), but decreased insignificantly (P≥ 0.33) after HF diet. In comparing of four sessions, serum levels of Orexin-A after acute aerobic exercise following HCHO and HP diet were significantly higher as compared to HF diet (respectively P≤ 0.019, P≤ 0.033). Serum BDNF levels after acute aerobic exercise following HCHO, HP, and N diets were significantly higher as compared to HF diet (Respectively, HCHO, P≤ 0.001, HP P≤ 0.001 and N P≤ 0.039).
Discussion: The present study demonstrated that in overweight men, acute aerobic exercise after consumption of HF diet can not significantly increase serum levels of Orexin-A and BDNF.
Methodology: In this single-blinded crossover study, 10 overweight men (aged 23± 6.1 and BMI 29.26 ± 0.47), who attended in physiology lab in four separate sessions at weekly intervals. In each session, respectively, after eating Normal (N), High carbohydrate (HCHO), High protein (HP) and High-fat (HF) diets, the subjects performed 30 min treadmill test at 60-70% of maximum heart rate. In each session three blood samples were taken in fasting, two hours after a meal (before exercise) and after exercise.
Results: Serum levels of Orexin-A, were significantly increased after acute aerobic exercise following consumption of HCHO (P≤0.006), HP (P≤ 0.018) and N diets (P≤0.045), but did not increase after HF diet (P≤0.084). Serum BDNF levels increased significantly after aerobic exercise following HCHO (P≤ 0.001), HP (P≤ 0.008) and N diets (P≤0.047), but decreased insignificantly (P≥ 0.33) after HF diet. In comparing of four sessions, serum levels of Orexin-A after acute aerobic exercise following HCHO and HP diet were significantly higher as compared to HF diet (respectively P≤ 0.019, P≤ 0.033). Serum BDNF levels after acute aerobic exercise following HCHO, HP, and N diets were significantly higher as compared to HF diet (Respectively, HCHO, P≤ 0.001, HP P≤ 0.001 and N P≤ 0.039).
Discussion: The present study demonstrated that in overweight men, acute aerobic exercise after consumption of HF diet can not significantly increase serum levels of Orexin-A and BDNF.
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