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The Effect of Acute Caffeine Ingestion Before High-Intensity Interval Training on Hemorheological and Antioxidant Responses in Overweight Women” | ||
| Research in Exercise Nutrition | ||
| مقاله 3، دوره 4، شماره 4، اسفند 2026 اصل مقاله (1.33 M) | ||
| نوع مقاله: Research Paper I Open Access I Released under (CC BY-NC 4.0) license | ||
| شناسه دیجیتال (DOI): 10.22034/ren.2026.144445.1127 | ||
| نویسندگان | ||
| Shahin Ketabi* 1؛ Mojgan Ketabolahi1؛ Bayan Feizi2؛ Hasti Ghasemkarimi2 | ||
| 1Department of Physical Education and Sport Sciences, Faculty of Humanities, University of Kurdistan, Iran. | ||
| 2Department of Sport Science,, Faculty of Humanities, University of Kurdistan, Iran. | ||
| چکیده | ||
| Aims: Overweight is commonly associated with hemorheological impairments and increased oxidative stress. High-intensity interval training (HIIT) and caffeine consumption can improve these parameters; however, their combined effects remain unclear.The present study aimed to investigate the effect of acute caffeine ingestion prior to a single HIIT session on plasma viscosity, fibrinogen, total antioxidant capacity (TAC), and malondialdehyde (MDA) in overweight women. Methods: In a randomized, double-blind clinical trial, 45 overweight women (25–35 years; BMI 25–30 kg/m²) were randomly assigned to three groups (n=15 each): HIIT+caffeine (6 mg/kg body weight), HIIT+placebo, and control+placebo. The HIIT protocol consisted of four 4-minute running bouts at 85–90% of maximal heart rate, interspersed with 3-minute active recovery periods at 50–60% HRmax. Blood samples were collected at baseline and immediately after exercise to assess hemorheological and oxidative stress indices. Results: A significant group × time interaction was observed for plasma viscosity (p=0.01, η²=0.19), fibrinogen (p=0.02, η²=0.16), and TAC (p<0.001, η²=0.28), but not for MDA (p=0.27). In the HIIT+caffeine group, plasma viscosity (−9.1%) and fibrinogen (−6.3%) decreased, while TAC (+25.4%) increased (p<0.05). Changes in the HIIT+placebo group were smaller and non-significant, and no changes were observed in the control group. Conclusion: Acute caffeine ingestion prior to HIIT improved hemorheological and antioxidant responses in overweight women without increasing lipid peroxidation. This simple, low-cost approach may contribute to vascular health and oxidative balance in this population. | ||
| کلیدواژهها | ||
| Caffeine؛ High-Intensity Interval Training؛ Antioxidant Capacity؛ Oxidative Stress | ||
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آمار تعداد مشاهده مقاله: 76 تعداد دریافت فایل اصل مقاله: 55 |
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