The effect of exercise intensity on plasma and tissue acyl ghrelin concentrations in fasted rats

Fathi, Rozita; Ghanbari–Niaki, Abbass; Talebi-Garakani, Elahe; Saghebjoo, Marziyeh

doi:10.1016/j.regpep.2010.05.013

Cited by 14 publications

(12 citation statements)

References 47 publications

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“…Although we observed a significant increase in AG after the study protocol in all the groups, but AG was significantly higher in HIIT groups (approximately twofold) compared to control group. The findings of the present study were similar to those reported by Fathi et al (28), namely that a 12-week high-intensity exercise program consisting of treadmill running raised fasting AG levels. In support of this finding, Leidy et al (29) investigated whether a 3-month body weight reduction program in normalweight, healthy women that consisted of exercise and energy deficit-imposing diet affected AG concentrations.…”

Section: Discussionsupporting

confidence: 93%

The Effect of Sport-Specific High Intensity Interval Training on Ghrelin Levels and Body Composition in Youth Wrestlers

Akhoundnia

Rashidlamir

Khajeie

et al. 2019

Ann. Appl. Sport Sci

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Background. High-Intensity Interval Training (HIIT) may affect Acylated Ghrelin (AG) through changes in body composition. Objectives. The present study was designed to investigate and compare the effects of two different orders of wrestling-based HIIT on AG levels and body composition in highly trained wrestlers. Methods. Forty-two male wrestlers (aged 16-21 years) were randomly assigned to one of three groups: HIIT23 (2 sets of 3 min wrestling techniques; by 80-90% HRmax); HIIT32 (3 sets of 2 min wrestling techniques; by 90-100% HRmax); and a control group that performed routine wrestling exercises. HIIT protocol consisted of eight techniques which were performed three days/week for eight weeks. Body composition and total plasma AG were measured 48 h before and after the protocol. Results. Body fat percentage (p<0.01) and weight (p<0.05) were significantly decreased in the HIIT groups from preto post-test. There was also a significant decrease in body fat percentage of both HIIT groups compared to the control group (p=0.002). Although a significant increase in post-test AG was observed in all the groups, AG levels in HIIT groups were approximately twofold higher than control group (p<0.01). Conclusion. It seems that eight weeks of wrestling-based HIIT can cause to significant decreases in body fat percentage and weight which is related to increase in total levels of plasma AG in highly trained wrestlers.

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Section: Discussionsupporting

confidence: 93%

The Effect of Sport-Specific High Intensity Interval Training on Ghrelin Levels and Body Composition in Youth Wrestlers

Akhoundnia

Rashidlamir

Khajeie

et al. 2019

Ann. Appl. Sport Sci

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“…Unfortunately, to our knowledge and research on different data base, we think there is no published data in relation to pistachio-atlantica aqueous extraction combined with treadmill running program on liver ghrline mRNA expression. However, our present study data are partially consistent to those results previously reported by the several investigators [8,[73][74][75][76][77][78][79]. A lower liver ghrelin RNA expression in trained rats regardless of the solutions treatment, might be attributed to lower plasma estradiol concentrations [80,81].…”

Section: Figure 8 Plasma Estradiol Level In Different Groupssupporting

confidence: 93%

“…The effects of physical exercise at different forms, modes, and intensity on appetite and its related peptides in human and animal central system and peripheral tissues, have inclusively been studies by several investigators [1][2][3][4][5][6][7][8]. Unfortunately, most of these research focused on plasma less on tissues appetite peptides such as ; leptin, orexins, NPY, POMC, PYY, ghrelin, AgRP,vaspin, omentin, nesfatin-1, visfatin, resistin, irisin, and other related peptides.…”

Section: Introductionmentioning

confidence: 99%

Effects of endurance training and herb supplementation on tissue nesfatin-1/nucleobindin-2 and ghrelin mRNA expression

Shirvani¹,

Ghanbari–Niaki²,

Rahmati-Ahmadabad

et al. 2017

Int J Appl Exerc Physiol

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ABSTRACT:The aim of present study was to investigate the effects of aerobic training with and without Pistacia-atlantica (Bane) extraction as a plant rich in fatty acids, on rat tissues nesfatin-1/nucleobindin-2 and ghrelin gene expression and also on plasma lipid and lipoproteins profiles.Twenty healthy and intact Wistar rats were obtain and randomly were assigned into saline-control (SC), saline-training (ST), Bane-control (BC), and Bane-training (BT) groups. Training groups ran on a motor driven treadmill (at intensity 25m/min, 5days/wk.) for 8 weeks. Rats were orally received saline or bene solution (100 mg/kg and 7.5ul/g of body weight). Blood was collected to determine biochemical variables and liver and visceral fat were also obtain for Nesfatin-1/nucleobindin-2 and ghrelin mRNA expressions by using a Real-time PCR technique.A higher and significant nesfatin-1 mRNA expressions in liver and visceral fat and liver estradiol were observed in trained groups. However, the level of ghrelin expression was lower in trained groups when compared to control rats. In general, lower tissues nesfatin-1mRNA expression and lower plasma and higher estradiol HDL-C were observed in bane-treated rats. A negative and positive correlation between liver estradiol and liver ghrelin expression, plasma estradiol, HDL-C and visceral fat nesfatin-1 expression were found respectively. The results of present study indicate that exercise combined with bane-treatment induced considerable changes on liver and visceral fat nesfatin-1 and ghrelin expression which was accompanied with a significant change in plasma HDL-C as a cardiovascular risk factor.

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“…A stress-free endurance treadmill exercise running protocol was adopted [34] with some modifications between rats and mice. Rats were randomly assigned to D5 (5 days of exercise; n = 10), D10 (n = 25) and D30 (n = 10) groups.…”

Section: Methodsmentioning

confidence: 99%

AQP4-Dependent Water Transport Plays a Functional Role in Exercise-Induced Skeletal Muscle Adaptations

et al. 2013

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In this study we assess the functional role of Aquaporin-4 (AQP4) in the skeletal muscle by analyzing whether physical activity modulates AQP4 expression and whether the absence of AQP4 has an effect on osmotic behavior, muscle contractile properties, and physical activity. To this purpose, rats and mice were trained on the treadmill for 10 (D10) and 30 (D30) days and tested with exercise to exhaustion, and muscles were used for immunoblotting, RT-PCR, and fiber-type distribution analysis. Taking advantage of the AQP4 KO murine model, functional analysis of AQP4 was performed on dissected muscle fibers and sarcolemma vesicles. Moreover, WT and AQP4 KO mice were subjected to both voluntary and forced activity. Rat fast-twitch muscles showed a twofold increase in AQP4 protein in D10 and D30 rats compared to sedentary rats. Such increase positively correlated with the animal performance, since highest level of AQP4 protein was found in high runner rats. Interestingly, no shift in muscle fiber composition nor an increase in AQP4-positive fibers was found. Furthermore, no changes in AQP4 mRNA after exercise were detected, suggesting that post-translational events are likely to be responsible for AQP4 modulation. Experiments performed on AQP4 KO mice revealed a strong impairment in osmotic responses as well as in forced and voluntary activities compared to WT mice, even though force development amplitude and contractile properties were unvaried. Our findings definitively demonstrate the physiological role of AQP4 in supporting muscle contractile activity and metabolic changes that occur in fast-twitch skeletal muscle during prolonged exercise.

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The effect of exercise intensity on plasma and tissue acyl ghrelin concentrations in fasted rats

Cited by 14 publications

References 47 publications

The Effect of Sport-Specific High Intensity Interval Training on Ghrelin Levels and Body Composition in Youth Wrestlers

The Effect of Sport-Specific High Intensity Interval Training on Ghrelin Levels and Body Composition in Youth Wrestlers

Effects of endurance training and herb supplementation on tissue nesfatin-1/nucleobindin-2 and ghrelin mRNA expression

AQP4-Dependent Water Transport Plays a Functional Role in Exercise-Induced Skeletal Muscle Adaptations

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