Isihlalo siwukuxazulula inkinga yokuhlala; Isihlalo se-ergonomic ukuxazulula inkinga yokuhlala phansi.
Ngokusekelwe emiphumeleni yokutholwa kwamandla kwe-lumbar intervertebral disc yesithathu (L1-L5):
Ukulala embhedeni, amandla ku-lumbar spine isikhathi esingu-0.25 sokuma okujwayelekile okujwayelekile, okuyisimo esikhululekile futhi esikhululekile somgogodla we-lumbar.
Ngokuma okujwayelekile kokuhlala, amandla ku-lumbar spine izikhathi ezingu-1.5 zokuma okujwayelekile, futhi i-pelvis ayithathi hlangothi ngalesi sikhathi.
Umsebenzi wokuzithandela, amandla omgogodla we-lumbar wokuma okuvamile izikhathi ezingu-1.8, lapho i-pelvis ibheke phambili.
Ikhanda phansi etafuleni, i-lumbar spine force yokuma okujwayelekile okujwayelekile izikhathi ezingu-2.7, iwukulimala kakhulu kokuhlala komgogodla we-lumbar.
I-backrest angle ngokuvamile iphakathi kuka-90~135°. Ngokwandisa i-angle phakathi kwe-back and cushion, i-pelvis ivunyelwe ukutshekela emuva. Ngaphandle kokusekelwa phambili komcamelo we-lumbar kuya ku-lumbar spine, umgogodla ugcina ukugoba okujwayelekile okumise okwe-S ngawo womabili amandla. Ngale ndlela, amandla e-lumbar spine izikhathi ezingu-0.75 zokuma, okungenzeka ukuthi angakhathali.
Ukusekelwa kwe-Backrest kanye ne-lumbar kungumphefumulo wezihlalo ze-ergonomic. U-50% wenkinga yokunethezeka utholakala kulokhu, okusele okungu-35% ku-cushion kanye no-15% endaweni yokubeka i-armrest, i-headrest, i-footrest nokunye okuhlangenwe nakho kokuhlala.
Ungakhetha kanjani isihlalo esilungile se-ergonomic?
Isihlalo se-Ergonomic siwumkhiqizo owenziwe umuntu ngamunye njengoba umuntu ngamunye enobude bakhe, isisindo kanye nesilinganiso somzimba. Ngakho-ke, usayizi ofanele kuphela ongakhulisa umphumela we-ergonomics, njengezingubo nezicathulo.
Ngokuphathelene nokuphakama, kunezinketho ezilinganiselwe kubantu abanobukhulu obuncane (ngaphansi kuka-150 cm) noma usayizi omkhulu (ngaphezu kuka-185 cm). Uma wehlulekile ukwenza ukukhetha okungcono kakhulu, imilenze yakho ingase ibe nzima ukunyathela phansi, i-headrest isekhanda lakho nentamo ingene phakathi.
Ngokuqondene nesisindo, abantu abancane (ngaphansi kuka-60 kg) abaphakamisi ukukhetha izihlalo ngokusekelwa kanzima kwe-lumbar. Kungakhathaliseki ukuthi lulungiswa kanjani, ukhalo luyaklinywa futhi alukhululekile. Abantu abakhuluphele (abangaphezu kuka-90 kg) abancomi ukukhetha izihlalo eziphakeme zokunwebeka ezinezikhala. Ama-cushions azoba lula ukucwila, okubangela ukungahambi kahle kwegazi emilenzeni kanye nokuba ndikindiki kalula emathangeni.
Abantu abanokulimala okhalweni, ukuqina kwemisipha, ama-disc e-herniated, isihlalo esinokusekelwa kwe-sacral noma ukuxhunyaniswa okuhle kwe-back and cushion kunganconywa kakhulu.
Isiphetho
Isihlalo se-ergonomic siwuhlelo lokusekela oluyindilinga yonke, oluguquguqukayo futhi olulungisekayo. Kungakhathaliseki ukuthi isihlalo se-ergonomic sibiza kangakanani, asikwazi ukugwema ngokuphelele ukulimala okulethwa ukuhlala.
Isikhathi sokuthumela: Dec-02-2022