Isu tinowanzo kunzwa chirevo "sedentary mararamiro" mune yakashata mamiriro, zvinotaurwa nezvazvo sechikonzero chehutano husina kunaka kana kunyangwe kutanga kwehurwere. Asi nei kugara hupenyu hwekukuvadza kuchikuvadza muchokwadi? Ini munguva pfupi yapfuura ndakawana chinyorwa chakanditsanangurira zvakawanda.
Zvinozivikanwa kuti chiitiko chemuviri chinogona kukanganisa mamiriro ehuropi, zvichikurudzira kuumbwa kwemasero matsva uye zvichikonzera kumwe kuchinja. Tsvagurudzo nyowani yakabuda ichiratidza kuti kusagadzikana kunogona zvakare kukonzera shanduko muhuropi nekukanganisa mamwe mauroni. Uye izvi zvinokanganisa kwete chete uropi, asiwo moyo.
Dhata dzakadai dzakawanikwa mukati mekudzidza kwakaitwa pamakonzo, asi, sekureva kwesainzi, zvingangodaro zvine basa kuvanhu. Izvi zvakawanikwa zvinogona kubatsira kutsanangura, muchidimbu, nei mararamiro ekugara asina kunaka kune miviri yedu.
Kana iwe uchifarira ruzivo rwechidzidzo, saka uchavawana pazasi, asi kuti usanete iwe neruzivo, ini ndichakuudza nezve kukosha kwayo.
Mhedzisiro yekuyedza, yakaburitswa muThe Journal of Comparative Neurology, inoratidza kuti kusaita muviri kunokanganisa maNeuron mune imwe yenharaunda dzehuropi. Chikamu chino chine chekuita nehurombo hwekunzwira tsitsi, uhwo, pakati pezvimwe zvinhu, hunodzora kumanikidza kweropa nekuchinja mwero wekudzikira kwemitsipa yeropa. Muboka rekuyedza makonzo, ayo akatorerwa kugona kushingairira kufamba kwevhiki dzinoverengeka, huwandu hukuru hwemapazi matsva akaonekwa mune mauroni echikamu ichi cheuropi. Nekuda kweizvozvo, maNeuron anokwanisa kutsamwisa iyo inonzwira tsitsi tsinga zvakanyanya kusimba, ichikanganisa muyero mune basa rayo uye nekudaro inogona kukonzeresa kuwedzera kweropa uye ichipa mukukudziridzwa kwezvirwere zvemoyo.
Ehe, makonzo haasi vanhu, uye ichi chidiki, chenguva pfupi kudzidza. Asi imwe mhedzisiro yakajeka: hupenyu hwekugara uine miuyo mikuru yemuviri.
Zvinotaridza kwandiri kuti mushure mevhiki ndakapedza ndichitonhorwa, izvo, zvinosuruvarisa, hazvisi zvangu uye zvinonditadzisa kugara kwangu mumhepo yakachena uye nebasa rangu zvachose, ndinonzwa sekunge mushure mekuyedza. Uye ndinogona kutora mhedziso yangu kubva mukuyedza uku: kushomeka kwekurovedza muviri kune mhedzisiro yakaipa kwazvo pamanzwiro uye kugarika kwevanhu. ((
Zvimwe pamusoro wenyaya:
Kusvikira makore makumi maviri apfuura, masayendisiti mazhinji vaitenda kuti chimiro chehuropi chinozogadziriswa nekutanga kwehukuru, ndiko kuti, uropi hwako hahugone kugadzira maseru matsva, kushandura chimiro cheavo varipo, kana neimwe nzira neimwe shanduko yemuviri. mamiriro ehuropi hwayo mushure mekuyaruka. Asi mumakore achangopfuura, kutsvagirwa kwemitsipa kwakaratidza kuti huropi hunochengeta plastiki, kana kugona kushandura, muhupenyu hwedu hwese. Uye, sekureva kwemasayendisiti, kurovedza muviri kunonyanya kushanda pane izvi.
Nekudaro, hapana kana chinhu chaizivikanwa pamusoro pekuti kushayikwa kwekurovedza muviri kunogona kukanganisa shanduko yechimiro chehuropi, uye kana zvirizvo, mhedzisiro inogona kunge iri. Nekudaro, kuitisa chidzidzo, ruzivo nezve izvo zvakaburitswa munguva pfupi yapfuura muThe Journal of Comparative Neurology, masayendisiti kubva kuWayne State University Chikoro cheMishonga nemamwe masangano vakatora gumi nemaviri emakonzo. Vakagadzika hafu yavo mumakeji ane mavhiri anotenderera, ayo mhuka dzaigona kukwira chero nguva. Makonzo anofarira kumhanya, uye akamhanya anenge mamaira matatu pazuva pamavhiri awo. Mamwe makonzo aya aigara mumakeji asina mavhiri uye akamanikidzwa kurarama hupenyu hwekugara.
Mushure memwedzi ingangoita mitatu yekuyedza, mhuka dzakakwenenzverwa dhayi yakasarudzika inosvibisa mauroni chaiwo muuropi. Nekudaro, iwo masayendisiti aida kumaka maNeuroni munzvimbo ye rostral ventromedial medulla oblongata yemhuka - chikamu chisina kuongororwa chehuropi icho chinodzora kufema uye zvimwe zviitiko zvekusaziva zvinodiwa kuti tivepo.
Iyo rostral ventromedial medulla oblongata inodzora inonzwira tsitsi tsinga yemuviri, iyo, pakati pezvimwe zvinhu, inodzora kukanganiswa kweropa miniti yega yega nekushandura mwero wevasoconstriction. Kunyangwe zvizhinji zvakawanikwa nesainzi zvine chekuita nerostral ventromedial medulla oblongata zvakabva mukuedzwa kwemhuka, zvidzidzo zvekufungidzira muvanhu zvinoratidza kuti isu tine nzvimbo yakafanana yeuropi uye inoshanda nenzira yakafanana.
Iyo inodzorwa inonzwira tsitsi tsinga system inokurumidza kukonzera tsinga dzeropa kuwedzera kana kutetepa, zvichibvumira kuyerera kweropa kwakakodzera, kuti iwe ugone, toti, kutiza kubva kumbavha kana kukwira kunze kwechigaro chemuhofisi usingafende. Asi kunyanyisa kwehurombo hwekunzwira tsitsi kuri kukonzera matambudziko, sekutaura kwaPatrick Mueller, mumwe purofesa wezve physiology kuWayne University uyo akatungamira chidzidzo chitsva ichi. Sekureva kwake, mhedzisiro yesainzi inoratidza kuti "kunyanyisa kunzwira tsitsi sisitimu inokonzera chirwere chemwoyo nekukonzera tsinga dzeropa kutetepa zvakanyanya, zvisina kusimba kana kazhinji, zvichitungamira kukwirisa kweropa uye kukuvara kwemoyo."
Masayendisiti anofungidzira kuti tsitsi dzinonzwira tsitsi dzinotanga kuita zvisirizvo uye zvine njodzi kana dzikatambira meseji yakawandisa (pamwe yakamonyaniswa) kubva kune maNeuron mune iyo rostral ventrolateral medulla oblongata.
Nekuda kweizvozvo, vesaenzi pavakatarisa mukati mehuropi hwemakonzo avo mushure mekunge mhuka dzave kushanda kana kugara kwemavhiki gumi nemaviri, vakawana misiyano inooneka pakati pemapoka maviri muchimiro chemamwe maNeuron mudunhu iro rehuropi.
Vachishandisa chirongwa chekomputa-chakabatsirwa digitization kudzokorora mukati mehuropi hwemhuka, masayendisiti akawana kuti mauroni ari muhuropi hwemakonzo anomhanya aive muchimiro chakafanana sepakutanga kwekudzidza uye aishanda zvakajairika. Asi mune mazhinji mauroni muuropi hwemakonzo akagara, nhamba hombe yezvinyowani, ayo anonzi mapazi, akaonekwa. Aya matavi anobatanidza manyuroni ane hutano muhurongwa hwekutya. Asi mauroni aya aive nematavi akawanda kupfuura akajairwa mauroni, achivaita kuti vanetseke zvakanyanya nekukasira kutumira mameseji asina kujairika kuhurongwa hwetsinga.
Muchokwadi, mauroni aya akachinja nenzira yekuti anozonyanya kunetsa kune anonzwira tsitsi system, izvo zvinokonzeresa kuwedzera kweropa uye zvichipa mukukudziridzwa kwechirwere chemoyo.
Uku kuwanikwa kwakakosha, anodaro Dr. Müller, sezvo ichiwedzera kunzwisisa kwedu kwekuti, padanho remaseru, kusaita basa kunowedzera sei njodzi yehutano hwemwoyo. Asi chinotonyanya kushamisa nezve mhedzisiro yezvidzidzo izvi ndechekuti kusasimba - senge chiitiko - kunogona kuchinja chimiro uye mashandiro ehuropi.
Sources:
NYTimes.com/blogs
Iyo National Center yeBiotechnology Ruzivo