Razvoj konstrukcijskog prijedloga naprave za vježbanje zgibova s prilagodljivim opterećenjem

master's thesis

• Title (english): Development of a pull-ups device design proposal with adjustable load
• Author: Tin Vujnović
• Mentor: Aleksandar Sušić (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2019-07, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

Određen dio zdravstvenih tegoba koji uključuje bol u leđima povezan je s atrofijom (mišićna slabost) leđnih mišića, a čimbenici kao što su stil življenja i radne obaveze doprinose ovom deficitu. Pažljivim odabirom odgovarajućih vježbi mogu se prevenirati navedeni deficiti i poboljšati opća dobrobit pojedinca. Budući da je osnovna vježba leđnih mišićnih skupina zgib, konstrukcijsko rješenje za kontroliran i lako prilagodljiv način vježbanja zgibova uvelike bi omogućio obnavljanje funkcionalnosti u slučaju utvrđenih deficita, te daljnje unaprjeđenje sposobnosti uz smanjen rizik od ozljeda.
U radu su objašnjena osnovna načela ispravnog izvođenja zgibova kao i pregled aktivnih mišićnih skupina. Provedena je analiza tržišta u svrhu definiranja uočenih prednosti i nedostataka kao temelj za usporedbu i ocjenjivanje novih rješenja. Određena je ciljana grupa korisnika uzevši u obzir antropometrijske i biomehaničke kriterije, zahtjeve i ograničenja. Provedena je konstrukcijska razrada i utvrđen glavni cilj koji podrazumijeva razvoj sigurne naprave koja će korisnicima omogućiti kontrolirano vježbanje zgibova uz dodatno opterećenje ili rasterećenje u rasponu od početnika do vrhunskih sportaša. Nakon pregleda relevantnih patenata i funkcijske dekompozicije izrađena je morfološka matrica po kojoj su generirana tri koncepta. Generirani koncepti su međusobno uspoređeni i vrednovani prilagođenom metodom potencijala u svrhu generiranja konačnog koncepta koji je naposljetku razrađen kao računalni model naprave. Glavni problem razrade računalnog modela bio je rješenje mehanizma koji će korisniku omogućiti jednostavnu promjenu dodatnog opterećenja i rasterećenja prema potrebi.
Ovim radom razvijen je konstrukcijski prijedlog naprave koja korisniku omogućuje jednostavno i efikasno vježbanje zgibova, uz prilagodljivo opterećenje. Ciljana grupa korisnika uključuje osobe različitih fizičkih karakteristika, različitih dobnih skupina, te osobe s određenim teškoćama i određenim stupnjem invaliditeta. Na kraju rada prikazan je i objašnjen glavni princip rada naprave tj. vježbanje zgibova s prilagodljivim opterećenjem i neke sporedne funkcije kao što su prilagodba vježbe zgibova osobama s određenim stupnjem teškoća i invaliditeta te vježbanje propadanja s prilagodljivim opterećenjem.

Abstract (english)

Some of the health problems involving back pain are associated with atrophy (muscular weakness) of the back muscles, and factors such as lifestyle and work responsibilities contribute to this deficiency. Careful selection of appropriate exercises can prevent these deficits and improve the general well-being of the individual. Since the basic exercise for the back muscles is the pull-up, the constructional solution for a controlled and easily customizable pull-up training would greatly improve the functionality in case of established deficits and further improve the ability while reducing the risk of injury.
Basic principles of proper exercise technique for doing pull-ups were described and an overview of active muscle groups was given. Market analysis was carried out to identify the noticed advantages and disadvantages as a basis for comparing and evaluating new solutions. A targeted user group was defined taking into account anthropometric and biomechanical criteria, requirements and limitations. The structural and functional requirements of the project are then defined, as well as the main goal, which implies the development of a safe device that will allow users to exercise the pull-up with adjustable load ranging from beginners to top athletes. Functional decomposition was then constructed and relevant patents of similar devices were examined for the purpose of generating various concepts using a morphological matrix. Generated concepts were mutually compared and evaluated to generate a final version that was ultimately developed and of which a computer model was made. The most important problem needed to be solved was the construction of a mechanism that will allow a simple change of assisted or weighted pull-ups according to user needs.
This work has provided a design proposal for a device, which enables the user to easily and efficiently exercise the pull-up with an adjustable load. The targeted user group includes people of different physical characteristics, different age groups, and people with a certain degree of disability. At the end of the paper, the main function of the device is explained (pull-up exercise with adjustable load) and some side functions such as adjusting the exercise to persons with a certain degree of disability and training dips with adjustable load.

• Keywords: naprava; razvoj; zgibovi
• Keywords (english): device; development; pull-ups
• Language: croatian
• URN:NBN: urn:nbn:hr:235:590371
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2019-07-03 10:47:18