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Obesity and catecholamine responses to maximal exercise in adolescent girls

Published on Sep 1, 2010in European Journal of Applied Physiology3.055
· DOI :10.1007/s00421-010-1492-9
Hassane Zouhal21
Estimated H-index: 21
(University of Rennes),
Georges Jabbour7
Estimated H-index: 7
(University of Rennes)
+ 4 AuthorsChristophe Jacob16
Estimated H-index: 16
(University of Balamand)
Abstract
The aim of this study was to investigate plasma catecholamine [adrenaline (A) and noradrenaline (NA)] concentrations at rest and in response to maximal exercise in three different groups of adolescent girls. According to their body mass index, 34 adolescent girls aged 15–16 years were divided into three groups: a normal weight group (NO) (n = 11), an overweight group (OW) (n = 11) and an obese group (OB) (n = 12). Plasma A and NA concentrations were measured at rest during fasting conditions (A 0 and NA0), after a standardized breakfast (A rest and NArest) and immediately after an incremental exhaustive exercise (A EX and NAEX). A 0 and NA0 were not significantly different among the three groups. However, the A 0/NA0 was statistically lower in OB compared to OW and NO. A EX and NAEX were significantly higher than resting values in the three groups. However, in response to exercise, no significant differences were reported between OB (A EX = 2.20 ± 0.13 nmol/l, NAEX = 12.28 ± 0.64 nmol/l), OW (A EX = 2.39 ± 0.23 nmol/l, NAEX = 12.94 ± 0.93 nmol/l) and NO (A EX = 2.52 ± 0.24 nmol/l, NAEX = 12.60 ± 0.63 nmol/l). In conclusion, our results showed that at rest, in adolescent girls, the responsiveness of the adrenal medulla to the sympathetic nervous activity is lower in OB subjects compared to OW and NO ones. However, in response to maximal exercise, plasma catecholamines are not affected by obesity.
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#1Hassane Zouhal (University of Rennes)H-Index: 21
#2Christophe Jacob (University of Rennes)H-Index: 16
Last. Arlette Gratas-Delamarche (University of Rennes)H-Index: 22
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Stress hormones, adrenaline (epinephrine) and noradrenaline (norepinephrine), are responsible for many adaptations both at rest and during exercise. Since their discovery, thousands of studies have focused on these two catecholamines and their importance in many adaptive processes to different stressors such as exercise, hypoglycaemia, hypoxia and heat exposure, and these studies are now well acknowledged. In fact, since adrenaline and noradrenaline are the main hormones whose concentrations inc...
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The aim of the present study was to verify the menstrual cycle phase influence on catecholamine concentrations (adrenaline (A) and noradrenaline (NA)), peak power (Ppic), and peak lactatemia (Lapic) in response to a 6 s sprint exercise on a cycle ergometer in eight untrained women (19.1 ± 0.9 years, 167.7 ± 5.4 cm, 59.5 ± 4.7 kg). All women realize the 6 s sprint test in the morning, within the same menstrual cycle, in the follicular (PF) and the luteal phase (PL). Plasma catecholamine concentra...
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Training is well known to influence catecholamine responses to exercise. In women, this training effect is still not well characterized and has been studied mostly in adults. Hence, we investigated in this longitudinal study, the effects of a 6-month sprint training program followed by 5 months of detraining on plasma catecholamine responses to a sprint exercise in young female subjects. Twelve healthy adolescent girls [training group (TG), n=6; control group (CG), n=6] took part in our study. T...
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Physiological and psychological systems work together to determine energy intake and output, and thus maintain adipose tissue. In addition, adipose tissue secretes leptin and cytokines, which induces satiety and has been linked to catecholamines, cortisol, insulin, human growth hormone, thyroid hormones, gonadotropin and lipolysis. Thus, adipose tissue is acted upon by a number of physiological stimuli, including hormones, and simultaneously, is an active component in the regulation of its own l...
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You might find this additional info useful...This article cites€37 articles, 12 of which you can access for free at: http://jap.physiology.org/content/114/6/786.full#ref-list-1Updated information and services including high resolution figures, can be found at: http://jap.physiology.org/content/114/6/786.fullAdditional material and information about Journal of Applied Physiology can be found at: http://www.the-aps.org/publications/japplThis information is current as of July 23, 2013.
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High fructose consumption contributes to metabolic syndrome incidence, whereas exercise training promotes several beneficial adaptations. In this study, we demonstrated the preventive role of exercise training in the metabolic syndrome derangements in a rat model. Wistar rats receiving fructose overload in drinking water (100 g/l) were concomitantly trained on a treadmill (FT) or kept sedentary (F) for 10 wk. Control rats treated with normal water were also submitted to exercise training (CT) or...
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The endocrine system regulates the processes of growth and development during childhood and adolescence. Physical activity influences acute and chronic changes in several hormones. For most hormones the acute response to exercise in children is different in magnitude compared to adults: in some cases higher (e.g., cortisol) and others lower (e.g., epinephrine). Therefore, maturation plays a vital role in dictating the hormonal responses to exercise and adaptations that may result from exercise t...
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JABBOUR, G., S. LEMOINE-MOREL, G. A. CASAZZA, Y. HALA, E. MOUSSA, and H. ZOUHAL. Catecholamine Response to Exercise in Obese, Overweight, and Lean Adolescent Boys. Med. Sci. Sports Exerc., Vol. 43, No. 3, pp. 00–00, 2011. Introduction: The aim of this study was to examine the effect of body fat percentage on the plasma catecholamine response to a cycling sprint test (CST) in sedentary adolescent boys. Methods: In this study, 31 adolescent boys (9 obese (% body fat = 31.0% T 3.0%), 11 overweight ...
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