scholarly journals Endocrine and Autonomic Nervous Adaptations during Physical Exercise in Down Syndrome

Author(s):  
Veronique Aurelie Bricout
2020 ◽  
Vol 18 (11) ◽  
pp. 749-759
Author(s):  
Thainá de Gomes Figueiredo ◽  
Helga Cecília Muniz de Souza ◽  
Victor Ribeiro Neves ◽  
Ana Eugênia Vasconcelos do Rêgo Barros ◽  
Armèle de Fátima Dornelas de Andrade ◽  
...  

Author(s):  
Russell G. Foster ◽  
Leon Kreitzman

Most circadian clocks make use of a sun-based mechanism as the primary entraining signal to lock the internal day to the astronomical day. For nearly four billion years, dawn and dusk has been the main zeitgeber that allows entrainment. Circadian clocks are not exactly 24 hours. So to prevent daily patterns of activity and rest from freerunning over time, light can reset the clock. ‘Shedding light on the clock’ explains that the main circadian clock has been located in the suprachiasmatic nucleus in the hypothalamus. This also regulates the activity of the autonomic nervous system, but there are clocks in virtually every cell in the human body. Other zeitgebers include food, physical exercise, and temperature.


Author(s):  
Kh. Boryak

The rapid increase in the number of overweight and obese individuals poses a significant threat to the health of the world's population of all ages. Obesity is able to induce a condition of chronic low-intensity inflammation underlying the number of diseases, and, in particular, the diseases of the cardiovascular system. The aim of the study was to determine the relationship between the response of the cardiovascular system and the state of autonomic nervous system to graduated physical exercises in young adults with normal body weight and overweight. Anthropometric measurements of 84 individuals of both sexes aged 18-25 years were carried out. According to the body mass index (BMI), the following groups were defined: control group of 22 individuals (BMI 18,50-24,99 kg/m2), group with overweight individuals (n=20) of both sexes (BMI 25,00-29,99 kg/m2). The condition of the cardio-vascular system was evaluated by heart rate, systolic and diastolic blood pressure; the status of autonomic nervous system was assessed by the Kerdo index. Indicators were evaluated before and immediately after the graduated exercise test. Data obtained were processed statistically. According to the results of the study, the normotоnic type by its response to the physical exercise was found out in both study groups, but the overweight individuals of both sexes demonstrated the cardiovascular indicators were significantly higher compared to the control group. Having finished the physical exercise tests, overweight men and women showed marked sympathicotonia (≥ + 31). The Kerdo᾿s index in 29,65% of male and in 19,01% of female individuals was higher than in the individuals with normal body mass (p <0.05). It can be concluded that the dominance of sympathetic influences is characteristic for overweight individuals after physical activity. Correlation between anthropometric, cardiovascular and Kerdo᾿s index immediately following the physical exertion in overweight individuals indicate impaired autonomic nervous system balance restoration.


2009 ◽  
Vol 41 ◽  
pp. 30
Author(s):  
George H. Echols ◽  
Kevin S. Heffernan ◽  
Arturo Figueroa ◽  
Scott Collier ◽  
Tracy Baynard ◽  
...  

Neuroscience ◽  
2010 ◽  
Vol 171 (4) ◽  
pp. 1228-1240 ◽  
Author(s):  
M.V. Llorens-Martín ◽  
N. Rueda ◽  
G.S. Tejeda ◽  
J. Flórez ◽  
J.L. Trejo ◽  
...  

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