000088511 001__ 88511
000088511 005__ 20200716101550.0
000088511 0247_ $$2doi$$a10.1177/1754337119872418
000088511 0248_ $$2sideral$$a114159
000088511 037__ $$aART-2019-114159
000088511 041__ $$aeng
000088511 100__ $$0(orcid)0000-0002-9191-9033$$aMuñiz-Pardos, Borja
000088511 245__ $$aValidity and reliability of an optoelectronic system to measure movement velocity during bench press and half squat in a Smith machine
000088511 260__ $$c2019
000088511 5060_ $$aAccess copy available to the general public$$fUnrestricted
000088511 5203_ $$aThe purpose of this study was to determine the validity and reliability of a camera-based optoelectronic system to measure movement velocity during bench press and half squat at different load intensities. A total of 22 active males (age: 28.2 +/- 3.9 years; one-repetition maximum bench press: 77.9 +/- 19.0 kg; one-repetition maximum half squat: 116.6 +/- 22.5 kg) participated in this study. After an initial one-repetition maximum testing session, participants performed five repetitions for each load (40%, 60% and 80% one-repetition maximum) and exercise (bench press and half squat) on a Smith machine in the second testing session. A third testing session was used for the test-retest reliability study. Time, displacement and mean propulsive velocity were simultaneously determined by the reference method (T-Force system) and the Velowin system. In bench press, ordinary least products regression analysis revealed low fixed biases for mean propulsive velocity at 40%, time at 60% and displacement at 80% one-repetition maximum (intercept = 0.065 m s(-1), -28.02 ms and 0.87 cm, respectively). In half squat, low fixed biases were also detected for mean propulsive velocity at 40% and 80% one-repetition maximum (intercept = -0.040 and 0.023 m s(-1), respectively), time at 40% and 60% one-repetition maximum (intercept = -53.05 and -101.85 ms, respectively) and displacement at 60% one-repetition maximum (intercept = -1.95 cm). Proportional bias was only observed for mean propulsive velocity at 80% bench press. In half squat, there was proportional bias for time and mean propulsive velocity at 40% one-repetition maximum, and also for time at 60% one-repetition maximum. The reliability test showed low and comparable fixed and proportional biases between systems across exercises and intensities. Velowin confirmed to be a valid and reliable system to measure movement velocity across a wide range of intensities (40%-80% one-repetition maximum) for two basic strength exercises through a robust statistical approach. Velowin would provide coaches and trainers with a suitable, affordable and easy-to-use equipment capable of measuring movement velocity in various exercises at different load intensities.
000088511 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000088511 590__ $$a1.0$$b2019
000088511 591__ $$aSPORT SCIENCES$$b77 / 85 = 0.906$$c2019$$dQ4$$eT3
000088511 591__ $$aENGINEERING, MECHANICAL$$b112 / 130 = 0.862$$c2019$$dQ4$$eT3
000088511 592__ $$a0.351$$b2019
000088511 593__ $$aEngineering (miscellaneous)$$c2019$$dQ2
000088511 593__ $$aSports Science$$c2019$$dQ4
000088511 655_4 $$ainfo:eu-repo/semantics/conferenceObject$$vinfo:eu-repo/semantics/acceptedVersion
000088511 700__ $$0(orcid)0000-0002-0137-9900$$aLozano-Berges, Gabriel$$uUniversidad de Zaragoza
000088511 700__ $$0(orcid)0000-0002-1042-542X$$aMarin-Puyalto, Jorge$$uUniversidad de Zaragoza
000088511 700__ $$0(orcid)0000-0002-1132-5906$$aGonzalez-Aguero, Alex$$uUniversidad de Zaragoza
000088511 700__ $$0(orcid)0000-0002-4303-4097$$aVicente-Rodriguez, German$$uUniversidad de Zaragoza
000088511 700__ $$0(orcid)0000-0002-7215-6931$$aCasajús, José A.$$uUniversidad de Zaragoza
000088511 700__ $$0(orcid)0000-0001-8374-9081$$aGaratachea, Nuria$$uUniversidad de Zaragoza
000088511 7102_ $$11006$$2245$$aUniversidad de Zaragoza$$bDpto. Fisiatría y Enfermería$$cÁrea Educación Física y Depor.
000088511 773__ $$g234, 1 (2019), 88-97$$pPROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART P-JOURNAL OF SPORTS ENGINEERING AND TECH$$tPROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART P-JOURNAL OF SPORTS ENGINEERING AND TECHNOLOGY$$x1754-3371
000088511 8564_ $$s141293$$uhttps://zaguan.unizar.es/record/88511/files/texto_completo.pdf$$yPostprint
000088511 8564_ $$s270906$$uhttps://zaguan.unizar.es/record/88511/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000088511 909CO $$ooai:zaguan.unizar.es:88511$$particulos$$pdriver
000088511 951__ $$a2020-07-16-09:45:47
000088511 980__ $$aARTICLE