Test-retest pouzdanost GymAware uređaja u treningu s otporom

master's thesis

• Title (english): Test-retest reliability of the GymAware power tool in resistance training
• Author: Bela Ščapec
• Mentor: Pavle Mikulić (mentor)
• Committee member: Pavle Mikulić (predsjednik povjerenstva)
• Committee member: Daniel Bok (član povjerenstva)
• Committee member: Saša Vuk (član povjerenstva)
• Granter: University of Zagreb; Faculty of Kinesiology; Zagreb
• Defense date and country: 2020-07-02, Croatia
• Scientific / art field, discipline and subdiscipline: SOCIAL SCIENCES; Kinesiology

Abstract

Trening baziran na brzini zadnjih godina postaje sve popularniji, kako u sportskoj znanosti, tako i u trenerskoj praksi. Jedan od najpopularnijih uređaja za određivanje brzine izvedbe u vježbama s otporom je Gymaware PowerTool (GYM) uređaj. Kako bi korisnici ovog uređaja mogli sigurno planirati i programirati svoje treninge na temelju brzine izvedbe, uređaj prije svega mora biti pouzdan. Cilj ovog istraživanja bio je odrediti razinu pouzdanosti GYM uređaja u procjeni brzine izvedbe i izlaza snage u vježbama čučanj i mrtvo dizanje. Istraživanje je provedeno na uzorku od 16 ispitanika, 10 muškaraca i 6 žena prosječne dobi 26±5 godina. Svi ispitanici bili su mjereni tijekom četiri dolaska. Ispitanicima su na temelju protokola 1RM-a određeni postoci koji predstavljaju raspon opterećenja (30%, 45%, 60%, 75% i 90% od 1RM-a). Na tim opterećenjima provedena su tri identična mjerenja (kroz tri dolaska) korištenjem GYM uređaja. Usporedba prvog i drugog mjerenja predstavlja uvijete bez upoznavanja sportaša s protokolom mjerenja, a usporedba drugog i trećeg mjerenja predstavlja uvijete sa upoznavanjem sportaša s protokolom mjerenja. Mjerene varijable bile su: (1) prosječna brzina (m/s), (2) vršna brzina (m/s), (3) prosječna snaga (W), (4) vršna snaga (W). Statistički postupci korišteni u ovom istraživanju u svrhu utvrđivanja pouzdanosti promatranih varijabli bili su univarijatna analiza varijance (ANOVA), intraklasni koeficijent korelacije (ICC), koeficijent varijabilnosti (CV) te standardna pogreška mjerenja (SEM). Dobivene ICC vrijednosti su bile u rasponu od 0.62-0.99 u mrtvom dizanju te 0.78-0.99 u čučnju. Koeficijent varijabilnosti bio je u rasponu od 2.2-10.6% za mrtvo dizanje i 2.6-6.9% za čučanj. Za brzinu i snagu, SEM je bio u rasponu od 0.03-0.08 m/s te 20-176 W. Test-retest pouzdanost GYM uređaja za određivanje brzine izvedbe u čučnju i mrtvom dizanju kroz sva analizirana opterećenja pokazala se kao dobra do odlična. Pokazalo se da bi upoznavanje sportaša s protokolom testiranja moglo imati pozitivan utjecaj na pouzdanost testa, ali to je potrebno potvrditi u daljnjim istraživanjima s većim uzorkom ispitanika.

Abstract (english)

In recent years velocity based training (VBT) is getting more popular in both science and training practice. One of the most popular devices for assessing repetition velocity in resistance training is Gymaware PowerTool system. In order for practitioners to safely plan and program the training process based on repetition velocity, the device must, first and foremost, be reliable. The aim of this study was to determine the level of reliability of GYM system for estimating the repetition velocity in deadlift and squat exercises. The research was conducted on the sample of 16 subjects, 10 males and 6 females of mean age 26±5 years. All subjects were measured during 4 testing sessions. Subjects were assigned percentages representing the load range based on the 1RM protocol (30%, 45%, 60%, 75%, and 90% of 1RM). At these loads they performed 3 identical testing sessions using GYM system for assessing repetition velocity. Comparison of first and second testing sessions was imitating the terms with familiarization of the athlete with the testing protocol and comparison of the second and third was imitating the terms without the familiarization of the athlete with the testing protocol. Measured variables were: (1) mean velocity (m/s), (2) peak velocity (m/s), (3) mean power (W) and (4) peak power (W). Statistical methods used in this study to determine the reliability of the observed variables were one-way repeated measures analysis of variance (ANOVA), intraclass correlation coefficient (ICC), coefficient of variation (CV) and standard error of measurement (SEM). Intraclass correlation coefficient ranged from 0.62-0.99 in deadlift and 0.78-0.99 in squat. Coefficient of variation ranged from 2.2-10.6% in deadlift and 2.6-6.9% in squat. For velocity and power tests, standard error of measurement ranged from 0.03-0.08 m/s and 20-176 W. Test-retest reliability of the GYM system for assessing repetition velocity in squat and deadlift was varying between good to excellent in all analyzed loads. It seems that the familiarization of the athlete with the testing protocol may further improve the reliability of this test, but this needs to be confirmed in future studies involving larger samples.

• Keywords: pouzdanost; Gymaware; brzina izvedbe; trening baziran na brzini
• Keywords (english): reliability; Gymaware; repetition velocity; velocity based training
• Language: croatian
• URN:NBN: urn:nbn:hr:117:849791
• Study programme: Title: Kinesiology; specializations in: Kinesiology in Education and Track-and-Field, Kinesiology in Education and Fitness, Kinesiology in Education and Wrestling, Kinesiology in Education and Sailing, Kinesiology in Education and Windsurfing, Kinesiology in Education and Judo, Kinesiology in Education and Kayaking, Kinesiology in Education and Kinesiological Recreation, Kinesiology in Education and Kinesitherapy, Kinesiology in Education and Physical Conditioning of Athletes, Kinesiology in Education and Basketball, Kinesiology in Education and Football, Kinesiology in Education and Volleyball, Kinesiology in Education and Basic Kinesiological Transformations, Kinesiology in Education and Dancing, Kinesiology in Education and Swimming, Kinesiology in Education and Rhythmic Gymnastics, Kinesiology in Education and Handball, Kinesiology in Education and Skiing, Kinesiology in Education and Artistic Gymnastics, Kinesiology in Education and Management of Sport, Kinesiology in Education and Tennis, Kinesiology in Education and Rowing; Course: Kinesiology in Education and Physical Conditioning of Athletes; Study programme type: university; Study level: integrated undergraduate and graduate; Academic / professional title: magistar / magistra kineziologije (magistar / magistra kineziologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2020-12-04 11:03:17