I. Keeb kwm theem (ua ntej lub xyoo pua 20th)
● Kev cob qhia ceg tsis muaj khoom siv
Kev cob qhia thaum ntxov muaj zog feem ntau yog ua raws li kev ua haujlwm pub dawb thiab hnyav squats.
Cov tub rog hauv tebchaws Greece thiab Rome thaum ub yuav siv pob zeb, ntoo ncej, thiab lwm yam rau kev cob qhia ceg thaum ub.
Tsis muaj cov cuab yeej cob qhia tshwj xeeb txhais ceg, thiab kev cob qhia tau tso siab rau lub ntiajteb txawj nqus thiab lub cev hloov pauv.
II. Prototype theem (mid-20th caug xyoo)
● 1950s ~ 1960s: Early Leg Press prototypes tuaj
Lub hnub nyoog kub ntawm kev tsim lub cev (xws li Reg Park, Arnold Schwarzenegger) tau pib nyiam qhov tseem ceeb ntawm kev cob qhia ceg.
Lub Leg Press thaum ntxov yog kev thawb ntsug-nce tsim (Vertical Leg Press), qhov twg tus kws qhia pw hauv av thiab thawb qhov hnyav.
Cov qauv yog yooj yim, tab sis nws tso ntau lub siab ntawm lub lumbar qaum thiab nws yog feem ntau raug mob.
III. Mechanical development period (1970s ~ 1980s)
● 45-degree inclined board Leg Press tshwm sim
Nws yog ntau nyob rau hauv txoj kab nrog tib neeg lub cev quab yuam kab, txo lumbar compression, thiab dhau los ua tus qauv version ntawm niaj hnub kev lag luam gyms.
Cov khoom lag luam loj xws li Nautilus thiab Universal tau pib tsim khoom lag luam tawm dag zog, suav nrog Leg Press.
Cov qauv tau hloov kho dua tshiab rau hom swb tsheb ciav hlau nrog lub kaw lus ruaj ntseg.
IV. Diversification (1990s ~ 2010s)
● Ntau yam qauv tsim tau tshwm sim
Kab rov tav Leg Press: Feem ntau pom hauv cov chaw kho mob, muaj kev nyab xeeb, haum rau cov neeg laus lossis cov pib tshiab.
Seated Leg Press: Tsim nyog rau cov neeg uas muaj kev sib koom ua ke, ob txhais taw yog nyob rau tib theem li lub rooj zaum, thiab lub hauv caug load me me.
Kho lub kaum sab xis thiab tsis kam (pneumatic, hydraulic, electromagnetic tsis kam) tshwm sim
Pub dawb yuag Leg Press (Hack Squat + Sled) ua ke squat thiab ceg xovxwm ua haujlwm los txhawb cov leeg nqaij loj.
Cim npe nrov: ceg xovxwm tshuab 45 degree, Tuam Tshoj ceg xovxwm tshuab 45℃manufacturers, lwm tus neeg, hoobkas
