نوع مقاله : مقاله پژوهشی
نویسندگان
1 کارشناس ارشد فیزیولوژی ورزش، پردیس دانشگاهی، دانشگاه گیلان، رشت، ایران.
2 استاد گروه فیزیولوژی ورزشی، دانشکده تربیت بدنی و علوم ورزشی، دانشگاه گیلان، رشت، ایران.
3 دانشیار گروه فیزیولوژی ورزشی، دانشکده تربیت بدنی و علوم ورزشی، دانشگاه گیلان، رشت، ایران.
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Objectives: The sympato-adrenal system is activated in response to various stressors, including exercise, with the degree of activation dependent on both training characteristics and nutritional intake. The present study aimed to determine the acute effects of L-citrulline supplementation on catecholamine and cortisol responses to high-intensity interval resistance training [HIIRE] in trained men.
Methods: This study employed a double-blind, randomized, crossover, placebo-controlled design with nine healthy trained men (age: 21.41 ± 1.13 yr, weight: 79.50 ± 9.35 kg, body fat: 10.67 ± 1.52%). Participants were randomly assigned to two trials, L-citrulline (12 g) supplementation or placebo (12 g maltodextrin) dissolved in 200ml water separated by a one-week washout period, combined with an HIIRE protocol (using a 16 kg kettlebell). The HIIRT protocol consisted of 12 minutes including 30:30 sec work/rest intervals with a 1:1 sec eccentric/concentric swing tempo. Blood samples were collected at 3, 10, and 30-minutes post-exercise to measure serum epinephrine, norepinephrine, and cortisol levels. Statistical analysis was performed using repeated-measures ANOVA and Bonferroni post-hoc tests (p ≤ 0.05).
Results: L-citrulline supplementation significantly increased cortisol (p = 0.02), epinephrine (p = 0.001), and norepinephrine (p = 0.001) 3 minutes after HIIRE compared to before that. Epinephrine (p = 0.001) and norepinephrine (p = 0.001) levels were significantly lower 3 minutes after HIIRE in the supplementation condition.
Conclusion: Acute L-citrulline supplementation before exercise reduces catecholamine and cortisol levels up to 30 minutes following high-intensity interval resistance training in trained young men.
کلیدواژهها [English]
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