New Approaches in Educational Management and Health Sciences

New Approaches in Educational Management and Health Sciences

Combined Effects of Aerobic Exercise and Crocin Supplementation on IGF-1 and VEGF-A Growth Factors in High-Fat Diet-Fed Rats

Document Type : Original Article

Authors
1 Department of Exercise Physiology, CT.C., Islamic Azad University, Tehran, Iran.
2 Department of Exercise Physiology, CT.C., Islamic Azad University, Tehran, Iran
3 Department of Physical Education and Sport Sciences, Khod.C., Islamic Azad University, Khodabandeh, Iran.
Abstract
Introduction and Objective: A high-fat diet can affect growth and angiogenic factors by inducing metabolic disturbances. This study aimed to investigate the combined effects of aerobic exercise and crocin supplementation on IGF-1 and VEGF-A levels in high-fat diet-fed rats.
Methods: This experimental laboratory study included 40 female Wistar rats. After one week of acclimatization, the rats were randomly assigned to the study groups. Initially, 32 rats were fed a high-fat diet for 8 weeks, while 8 rats received a normal diet as the control group. Following obesity induction, the high-fat diet-fed animals were divided into four groups: high-fat diet control, high-fat diet + aerobic exercise, high-fat diet + crocin, and high-fat diet + aerobic exercise + crocin. The interventions were performed for 8 weeks. Aerobic exercise was conducted on a treadmill with a gradual increase in exercise intensity and duration. Crocin was administered orally by gavage at a dose of 60 mg/kg body weight, 5 days per week. Serum IGF-1 and VEGF-A levels were assessed using the ELISA method. Data were analyzed using one-way analysis of variance (ANOVA) followed by the Bonferroni post hoc test at a significance level of p ≤ 0.05.
Results: The results showed that the high-fat diet decreased IGF-1 and VEGF-A levels. Aerobic exercise and crocin supplementation separately resulted in a relative improvement in these indices; however, the greatest effect was observed in the group receiving both aerobic exercise and crocin. The combined intervention also significantly increased IGF-1 and VEGF-A levels compared with the high-fat diet group.
Conclusion: It appears that aerobic exercise and crocin supplementation, particularly when combined, can attenuate the adverse effects of a high-fat diet on factors associated with cardiac growth and remodeling. These interventions may contribute to maintaining cardiac health and adaptation through increasing IGF-1 and VEGF-A levels.
Keywords

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Volume 3, Issue 2
Summer 2026
Summer 2026
Pages 148-162

  • Receive Date 10 May 2026
  • Revise Date 08 August 2026
  • Accept Date 12 September 2026