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Relação entre leptina, obesidade e exercício físico

Authors: Freitas, Priscila Correa; Colato, Alana Schraiber; Peres, Alessandra; Camargo, Joiza Lins;

Relação entre leptina, obesidade e exercício físico

Abstract

A obesidade é uma doença complexa, com etiologia multifatorial, que afeta todas as idades e classes sociais. No Brasil, o crescimento da obesidade e sobrepeso é preocupante, sendo o Rio Grande do Sul (RS) o estado com os maiores índices. O tecido adiposo é responsável pela síntese de leptina, um hormônio participante da inibição da fome via hipotálamo. O excesso de peso na obesidade eleva a síntese hormonal dos adipócitos e, consequentemente, os níveis plasmáticos de leptina. Contudo, a demasiada estimulação da leptina em seus receptores centrais origina uma resistência à sua ação no organismo. Assim, este excesso acarreta um desequilíbrio entre a ingestão de alimentos e o gasto energético, além de efeitos pró-inflamatórios. A perda de peso é capaz de reestabelecer este equilíbrio, melhorando a qualidade de vida dos indivíduos. O treinamento físico vem sendo estudado como uma alternativa não farmacológica para essa modulação, entretanto muitos resultados controversos são encontrados. O objetivo deste artigo é mostrar a relação da leptina com a obesidade e sua modulação pelo exercício, por meio de uma revisão em torno de artigos científicos sobre este tema.

Obesity is a complex disease with multifactorial etiology which affects people of all ages and classes. In Brazil, the growth in overweight and obesity rates is alarming, and Rio Grande do Sul (RS) presents the highest rates among states. The adipose tissue is responsible for the synthesis of leptin, a hormone which acts in the hypothalamus to inhibit appetite. In overweight people, leptin synthesis is increased, leading to high plasma leptin levels. However, excessive stimulus of leptin central receptors results in resistance to the effects of leptin. This leads to an imbalance between food intake and energetic expenditure, in addition to proinflammatory effects. Weight loss is enough to restore balance and improve quality of life. Physical training is one of the most studied nonpharmacological alternatives to this modulation, although many controversial results have been found. This paper aimed to conduct a review of articles on the relationship between leptin and obesity and its modulation through exercise.

Keywords

Leptin, obesidade, leptina; obesidade; exercício; treinamento físico, Exercício, R, exercício, Medicina; Medicina I, Obesidade, Leptina, Educação física e treinamento, Physical training, treinamento físico, Medicine, Obesity, leptina, Exercise

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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gold