{"id":2221,"date":"2025-07-04T09:56:43","date_gmt":"2025-07-04T07:56:43","guid":{"rendered":"https:\/\/nutrisense.com.ro\/?p=2221"},"modified":"2025-07-04T16:40:33","modified_gmt":"2025-07-04T14:40:33","slug":"glucoza-glicogen-ce-sunt-si-cum-sunt-utilizate-de-organism","status":"publish","type":"post","link":"https:\/\/nutrisense.com.ro\/en\/glucoza-glicogen-ce-sunt-si-cum-sunt-utilizate-de-organism\/","title":{"rendered":"Glucoz\u0103, glicogen&#8230; Ce sunt \u0219i cum sunt utilizate de organism?"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"2221\" class=\"elementor elementor-2221\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7cca8300 e-ecs-flex e-flex e-con-boxed e-con e-parent\" data-id=\"7cca8300\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ecs_container_type&quot;:&quot;flex&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-373269b0 elementor-widget elementor-widget-text-editor\" data-id=\"373269b0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><b>1. Ce este glucoza \u0219i ce este glicogenul?<\/b><\/p>\n<ul>\n<li>Glucoza \u2013 este zah\u0103rul simplu din s\u00e2nge, surs\u0103 principal\u0103 de energie pentru celule.<\/li>\n<li>Glicogenul \u2013 este forma de stocare a glucozei, \u00een special \u00een ficat \u0219i mu\u0219chi. Este un polimer de glucoz\u0103.<\/li>\n<\/ul>\n<p><b>2. Cum folose\u0219te corpul glucoza? (etapa postprandial\u0103 \u2013 dup\u0103 mas\u0103)<\/b><\/p>\n<p><b>Mecanismul de folosire a glucozei:<br><\/b>1. Cre\u0219terea glicemiei (nivelul glucozei \u00een s\u00e2nge) dup\u0103 mas\u0103 \u2192 pancreasul detecteaz\u0103 acest lucru.<br>2. Pancreasul elibereaz\u0103 insulina.<br>3. Insulina ac\u021bioneaz\u0103 ca o &#8222;cheie&#8221; care deschide por\u021bile celulelor:<\/p>\n<ul>\n<li>Le permite celulelor musculare \u0219i adipoase s\u0103 absoarb\u0103 glucoz\u0103.<\/li>\n<li>Stimuleaz\u0103 ficatul s\u0103 stocheze glucoza sub form\u0103 de glicogen.<\/li>\n<\/ul>\n<p>4. Glucoza este folosit\u0103 pentru:<\/p>\n<ul>\n<li>Energie imediat\u0103 (ATP prin glicoliz\u0103 \u0219i respira\u021bie celular\u0103).<\/li>\n<li>Stocare ca glicogen (\u00een ficat \u0219i mu\u0219chi).<\/li>\n<li>Excesul devine gr\u0103sime (lipogenez\u0103).<\/li>\n<\/ul>\n<p><b>Efect asupra glicemiei<\/b>: glicemia scade treptat datorit\u0103 absorb\u021biei glucozei \u00een celule. \u00cen func\u021bie de ce am consumat la mas\u0103, glicemia poate s\u0103 scad\u0103 u\u0219or \u0219i repede (la dou\u0103 ore dup\u0103 mas\u0103 ar trebui s\u0103 revin\u0103 la normal) sau foarte \u00eencet \u0219i s\u0103 dureze foarte mult (la patru ore dup\u0103 mas\u0103 s\u0103 avem \u00eenc\u0103 o glicemie ridicat\u0103, dovad\u0103 c\u0103 nu \u0219tim s\u0103 ne aliment\u0103m corect sau c\u0103 avem diabet nediagnosticat).<\/p>\n<p><b>3. Cum folose\u0219te corpul glicogenul? (perioadele dintre mese \/ efort \/ post)<\/b><\/p>\n<p><b>Mecanismul de folosire a glicogenului:<br><\/b>1. C\u00e2nd glicemia scade (ex: \u00een post, \u00eentre mese, sau \u00een efort fizic intens), pancreasul detecteaz\u0103 nivelul sc\u0103zut.<br>2. Pancreasul elibereaz\u0103 glucagon, hormon &#8222;opus&#8221; insulinei.<br>3. Glucagonul semnaleaz\u0103:<\/p>\n<ul>\n<li>Ficatului s\u0103 descompun\u0103 glicogenul \u00een glucoz\u0103 (glicogenoliz\u0103) \u2192 glucoza e eliberat\u0103 \u00een s\u00e2nge.<\/li>\n<li>Eventual, \u00een cazuri prelungite, ini\u021biaz\u0103 gluconeogeneza (producerea de glucoz\u0103 din aminoacizi sau lactat).<\/li>\n<\/ul>\n<p>4. Mu\u0219chii \u00ee\u0219i folosesc propriul glicogen pentru energie \u00een timpul efortului, dar nu elibereaz\u0103 glucoz\u0103 \u00een s\u00e2nge (nu au enzima necesar\u0103 \u2013 glucozo-6-fosfataz\u0103).<\/p>\n<p><br><b>Efect asupra glicemiei<\/b>: glicemia cre\u0219te sau se stabilizeaz\u0103 datorit\u0103 eliber\u0103rii de glucoz\u0103 din ficat.<\/p>\n<p><b>4. Pe scurt: cine d\u0103 semnalul?<\/b><\/p>\n<ul>\n<li>Insulina \u2013 semnaleaz\u0103 abunden\u021b\u0103 (glicemie mare): \u201eDepozita\u021bi \u0219i folosi\u021bi glucoza!\u201d<\/li>\n<li>Glucagonul \u2013 semnaleaz\u0103 lips\u0103 (glicemie mic\u0103): \u201eFolosi\u021bi depozitele de glicogen!\u201d<\/li>\n<li>Adrenalina \u0219i cortizolul \u2013 mobilizeaz\u0103 glicogenul \u0219i alte surse (gr\u0103simi, proteine) \u00een caz de stres sau efort, sau pur \u0219i simplu diminea\u021ba, c\u00e2nd ne trezim.<\/li>\n<\/ul>\n<h2>Cum influen\u021beaz\u0103 sportul glicemia?<\/h2>\n<p><span style=\"font-family: inherit; font-size: inherit; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; letter-spacing: 0px; word-spacing: 0em;\">Sportul poate:<\/span><\/p>\n<ul>\n<li>Sc\u0103dea glicemia, c\u00e2nd mu\u0219chii folosesc glucoza din s\u00e2nge pentru energie.<\/li>\n<li>Cre\u0219te glicemia, temporar, \u00een anumite condi\u021bii, prin eliberarea hormonilor de stres (adrenalin\u0103, cortizol), care stimuleaz\u0103 ficatul s\u0103 elibereze glucoz\u0103.<\/li>\n<\/ul>\n<h2>Mecanismele metabolice implicate<\/h2>\n<p><b>C\u00e2nd scade glicemia prin mi\u0219care:<\/b><\/p>\n<ul>\n<li>\u00cen efort moderat sau prelungit, mu\u0219chii au nevoie de energie \u2192 preiau glucoz\u0103 din s\u00e2nge chiar \u0219i f\u0103r\u0103 insulin\u0103 (se activeaz\u0103 transportorii GLUT4 prin contrac\u021bie muscular\u0103).<\/li>\n<li>Ficatul poate sus\u021bine glicemia prin eliberarea glucozei din glicogen, dar dac\u0103 efortul continu\u0103, glicemia tot poate sc\u0103dea.<\/li>\n<li>Mai ales dac\u0103 e\u0219ti \u00een post sau ai administrat insulin\u0103\/medicamente (la diabetici), glicemia poate sc\u0103dea prea mult \u2192 hipoglicemie.<\/li>\n<\/ul>\n<p><b>Exemplu<\/b>: Mers pe jos dup\u0103 mas\u0103 \u2192 mu\u0219chii consum\u0103 glucoza din s\u00e2nge \u2192 glicemia scade mai repede \u2192 benefic pentru controlul glicemic.<\/p>\n<p><b>C\u00e2nd cre\u0219te glicemia prin mi\u0219care:<\/b><\/p>\n<ul>\n<li>\u00cen efort intens sau scurt (anaerob), corpul intr\u0103 \u00een \u201emod de lupt\u0103\u201d:\n<ul>\n<li>Se elibereaz\u0103 adrenalin\u0103 \u0219i cortizol.<\/li>\n<li>Acestea stimuleaz\u0103 ficatul s\u0103 descompun\u0103 glicogenul \u2192 glucoz\u0103 \u00een s\u00e2nge.<\/li>\n<li>Glicemia poate cre\u0219te temporar, mai ales dac\u0103 nu e folosit\u0103 imediat.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><b>Exemplu<\/b>: Sesiune de sprinturi sau ridicat greut\u0103\u021bi \u2192 glicemia poate cre\u0219te temporar.<\/p>\n<h2>Concluzie practic\u0103<\/h2>\n<ul>\n<li>Mi\u0219carea regulat\u0103 \u00eembun\u0103t\u0103\u021be\u0219te sensibilitatea la insulin\u0103 \u0219i ajut\u0103 la sc\u0103derea glicemiei.<\/li>\n<li>Dup\u0103 mas\u0103, 30 de minute de mers pe jos pot reduce semnificativ glicemia postprandial\u0103.<\/li>\n<li>Efortul intens poate duce la o cre\u0219tere temporar\u0103 a glicemiei, dar ulterior contribuie la o reglare mai bun\u0103 pe termen lung.<\/li>\n<\/ul>\n<h2>Ce se \u00eent\u00e2mpl\u0103 c\u00e2nd faci mi\u0219care pe stomacul gol (glicemie normal\u0103 sau sc\u0103zut\u0103)?<\/h2>\n<p><b>1. Organismul are mai pu\u021bin\u0103 glucoz\u0103 disponibil\u0103 \u00een s\u00e2nge:<\/b><\/p>\n<ul>\n<li>Nu ai m\u00e2ncat \u2192 nu ai glucoz\u0103 proasp\u0103t\u0103 venit\u0103 din digestie.<\/li>\n<li>Pancreasul nu elibereaz\u0103 insulin\u0103, pentru c\u0103 glicemia nu e mare.<\/li>\n<li>Deci mu\u0219chii trebuie s\u0103 se bazeze pe alte surse de energie.<\/li>\n<\/ul>\n<p><b>2. Care sunt sursele de energie \u00een lipsa alimentelor?<\/b><\/p>\n<ul>\n<li>Glicogenul stocat \u00een mu\u0219chi \u0219i ficat:\n<ul>\n<li>Ficatul \u00eencepe s\u0103 descompun\u0103 glicogenul \u00een glucoz\u0103 \u2192 men\u021bine glicemia.<\/li>\n<li>Mu\u0219chii folosesc propriul glicogen pentru energie.<\/li>\n<\/ul>\n<\/li>\n<li>Gr\u0103simea corporal\u0103 (lipoliz\u0103):\n<ul>\n<li>Dup\u0103 ~30-45 min de efort, corpul \u00eencepe s\u0103 ard\u0103 mai intens gr\u0103simi.<\/li>\n<li>Apare oxidarea acizilor gra\u0219i \u0219i, \u00een timp, corpi cetonici (\u00een post prelungit sau efort lung).<\/li>\n<\/ul>\n<\/li>\n<li>Gluconeogenez\u0103 (\u00een efort prelungit sau post sever):\n<ul>\n<li>Corpul produce glucoz\u0103 nou\u0103 din aminoacizi, lactat, glicerol.<\/li>\n<li>Proces lent, dar esen\u021bial pentru a evita hipoglicemia profund\u0103.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>1. Ce este glucoza \u0219i ce este glicogenul? Glucoza \u2013 este zah\u0103rul simplu din s\u00e2nge, surs\u0103 principal\u0103 de energie pentru celule. Glicogenul \u2013 este forma de stocare a glucozei, \u00een special \u00een ficat \u0219i mu\u0219chi. Este un polimer de glucoz\u0103. 2. Cum folose\u0219te corpul glucoza? (etapa postprandial\u0103 \u2013 dup\u0103 mas\u0103) Mecanismul de folosire a glucozei:1. [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":2222,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[70],"tags":[],"class_list":["post-2221","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nutritie"],"_links":{"self":[{"href":"https:\/\/nutrisense.com.ro\/en\/wp-json\/wp\/v2\/posts\/2221","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nutrisense.com.ro\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nutrisense.com.ro\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nutrisense.com.ro\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nutrisense.com.ro\/en\/wp-json\/wp\/v2\/comments?post=2221"}],"version-history":[{"count":11,"href":"https:\/\/nutrisense.com.ro\/en\/wp-json\/wp\/v2\/posts\/2221\/revisions"}],"predecessor-version":[{"id":2235,"href":"https:\/\/nutrisense.com.ro\/en\/wp-json\/wp\/v2\/posts\/2221\/revisions\/2235"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nutrisense.com.ro\/en\/wp-json\/wp\/v2\/media\/2222"}],"wp:attachment":[{"href":"https:\/\/nutrisense.com.ro\/en\/wp-json\/wp\/v2\/media?parent=2221"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nutrisense.com.ro\/en\/wp-json\/wp\/v2\/categories?post=2221"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nutrisense.com.ro\/en\/wp-json\/wp\/v2\/tags?post=2221"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}