Perić, Dušan

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orcid::0000-0002-7806-6494
  • Perić, Dušan (2)
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Author's Bibliography

Control of muscle force development in arm extensors during isometric tension

Perić, Dušan; Amanović, Đurica; Milošević, Milenko; Milošević, Milos

(Drustvo Pedagoga Tjelesne & Zdravstvene Kulture, Ljubuski, 2018)

TY  - JOUR
AU  - Perić, Dušan
AU  - Amanović, Đurica
AU  - Milošević, Milenko
AU  - Milošević, Milos
PY  - 2018
UR  - http://jakov.kpu.edu.rs/handle/123456789/827
AB  - The aim of this study is to determine the patterns of force development regulation in arm extensors during isometric tension using the standardized Bench Press test. An evaluation of control for each subject has been made based on the level of force achieved (30%, 50%, 70% and 90%), the rate of force development (RFD), the speed of inclusion of motor units (k), the time necessary to achieve the given level (t) and the differences recorded in the first (initial) and repeated measurements. The experiment was carried out on a sample of 130 respondents. Descriptive and comparative statistics was used along with nonlinear mathematical modeling methods for the analysis of experimental results and for establishing the patterns of control. The results of the analysis indicate that there are statistically significant differences (p lt 0.01) between the mean values of generated force, generating time, the rate of force development, the speed of inclusion of motor units in a given unit of time and the mean values of the same parameters in repeated measurement at all levels except at the levels of force F-70% (p = 0.02), and F-90% (p = 0.52). The models of force control have a high predictive value, ranging from 90% to 99.88% and a small prediction error, which is in the range from 0.12% to 10%. All analyses indicate high reliability of the results of this research and are therefore recommended for use in research and educational practice.
PB  - Drustvo Pedagoga Tjelesne & Zdravstvene Kulture, Ljubuski
T2  - Acta kinesiologica
T1  - Control of muscle force development in arm extensors during isometric tension
VL  - 12
IS  - 1
SP  - 5
EP  - 13
UR  - https://hdl.handle.net/21.15107/rcub_jakov_827
ER  - 
@article{
author = "Perić, Dušan and Amanović, Đurica and Milošević, Milenko and Milošević, Milos",
year = "2018",
abstract = "The aim of this study is to determine the patterns of force development regulation in arm extensors during isometric tension using the standardized Bench Press test. An evaluation of control for each subject has been made based on the level of force achieved (30%, 50%, 70% and 90%), the rate of force development (RFD), the speed of inclusion of motor units (k), the time necessary to achieve the given level (t) and the differences recorded in the first (initial) and repeated measurements. The experiment was carried out on a sample of 130 respondents. Descriptive and comparative statistics was used along with nonlinear mathematical modeling methods for the analysis of experimental results and for establishing the patterns of control. The results of the analysis indicate that there are statistically significant differences (p lt 0.01) between the mean values of generated force, generating time, the rate of force development, the speed of inclusion of motor units in a given unit of time and the mean values of the same parameters in repeated measurement at all levels except at the levels of force F-70% (p = 0.02), and F-90% (p = 0.52). The models of force control have a high predictive value, ranging from 90% to 99.88% and a small prediction error, which is in the range from 0.12% to 10%. All analyses indicate high reliability of the results of this research and are therefore recommended for use in research and educational practice.",
publisher = "Drustvo Pedagoga Tjelesne & Zdravstvene Kulture, Ljubuski",
journal = "Acta kinesiologica",
title = "Control of muscle force development in arm extensors during isometric tension",
volume = "12",
number = "1",
pages = "5-13",
url = "https://hdl.handle.net/21.15107/rcub_jakov_827"
}
Perić, D., Amanović, Đ., Milošević, M.,& Milošević, M.. (2018). Control of muscle force development in arm extensors during isometric tension. in Acta kinesiologica
Drustvo Pedagoga Tjelesne & Zdravstvene Kulture, Ljubuski., 12(1), 5-13.
https://hdl.handle.net/21.15107/rcub_jakov_827
Perić D, Amanović Đ, Milošević M, Milošević M. Control of muscle force development in arm extensors during isometric tension. in Acta kinesiologica. 2018;12(1):5-13.
https://hdl.handle.net/21.15107/rcub_jakov_827 .
Perić, Dušan, Amanović, Đurica, Milošević, Milenko, Milošević, Milos, "Control of muscle force development in arm extensors during isometric tension" in Acta kinesiologica, 12, no. 1 (2018):5-13,
https://hdl.handle.net/21.15107/rcub_jakov_827 .

Modeling variability of the assigned level of force during isometric contractions of the arms extensor muscles in untrained males

Amanović, Đurica; Milošević, Milenko; Mudrić, Radomir; Dopsaj, Milivoj; Perić, Dušan

(Univerzitet u Nišu, 2006)

TY  - JOUR
AU  - Amanović, Đurica
AU  - Milošević, Milenko
AU  - Mudrić, Radomir
AU  - Dopsaj, Milivoj
AU  - Perić, Dušan
PY  - 2006
UR  - http://jakov.kpu.edu.rs/handle/123456789/131
AB  - The research has been carried out in order to measure the variability of the development of muscle force control achieved by the arms extensor muscle within the task requirements. The experiment involved testing the arm extensor muscle by using the isometric Flat Bench Press Test. The sample consisted of 28 subjects who were students of the College of Internal Affairs in Zemun - Belgrade. The subjects had underwent five individual test trials, within which the first trial measured the maximum isometric muscle force (Fmaxizo) and in the other four cases depended on the acquired percentage of Fmaxizo at the levels of 30%, 50%, 70% and 90%. The testing was developed by using a hardware-software system applied in the Special Physical Education Laboratory at the College of Internal Affairs. The variability differences among the observed variables were measured by implementing the ANOVA variance analysis, Kandall′s and Wilcoxon′s Test. In order to establish the differences among individual variables, the Student's t-test of equal samples was used. The ANOVA results showed a statistically significant difference between the mean values and variability among all of the observed variables at the F = 6.065, p = 0.001 level, in relation to the absolute values and F = 9.956, p = 0.000 and in relation to relative force values. The results of the Student's t-test showed a statistically significant difference among the mean value of errors in the developed force between the level of 30 percent (as the smallest force of the level tested) and all the other levels of 50%, 70% and 90% (as the middle, large and submaximum level of force). Kandall′s test showed that the error distribution, that is, the level of force deviation from the force level required by the task, differs from the aspect of absolute and the aspect of relative values (values in percents) at the p = 0.000 level. According to the results, it can be concluded that in regards to the control of muscle force distribution as part of the task, a healthy and untrained male population mostly makes errors in the sense of a low level of force (at the 30 percent level of Fmaxizo), while at the level of 50, 70 and 90 percent of Fmaxizo, the errors are statistically nonsignificant. This means of the ability for fine motoric control, or creating muscle force at the level of 30 percent of Fmax, for the subjects represented a motor task which they were not able to completely realize, while in the cases where higher levels of force were used, the examinees were more precise with fewer errors.
AB  - Istraživanje je obavljeno sa ciljem da se proceni varijabilitet kontrole realizacije ostvarenog nivoa mišićne sile kod mišića opružača ruku u funkciji zadatkom zadatog. Eksperimentom je bilo obuhvaćeno testiranje mišića opružača ruku primenom testa ravni bendž-pres u izometrijskim uslovima naprezanja, a realizovano je nad uzorkom sastavljenom od 28 ispitanika, studenata Više škole unutrašnjih poslova u Zemunu - Beograd. Ispitanici su tokom eksperimentalnog testiranja ostvarili po 5 pojedinačna testovna pokušaja, pri čemu je pri prvom pokušaju merena maksimalna mišićnu sila (FmaxIZO) a u preostala četiri ostvarena sila u odnosu na zadati procenat od maksimalne sile Fmax na nivou od 30%, 50%, 70% i 90%. Testiranje je izvršeno pomoću hardversko-softverskog sistema koji se koristi u Dijagnostičko prognostičkoj laboratoriji (DPL) za Specijalno fizičko obrazovanje u Višoj školi unutrašnjih poslova u Beogradu. Razlika varijabiliteta između posmatranih varijabli utvrđena je primenom analize varijanse - ANOVA, Kendalovog i Vilkoksonovog testa. Za utvrđivanje postojanja razlike između pojedinačnih varijabli korišćen je Studentov t test za parne uzorke. Rezultati ANOVE su pokazali da postoji statistički značajna razlika između srednjih vrednosti i varijabliliteta kod posmatranih varijabli na nivou F = 6.065, p = 0.001, u odnosu na apsolutne vrednosti, i F = 9.956, p = 0.000, u odnosu na relativne vrednosti sile. Rezultati Studentovog t-testa pokazali su da postoje statistički značajne razlike između srednje vrednosti grešaka ostvarene sile između nivoa od 30% (kao najnižeg testiranog nivoa sile) i svih ostalih nivoa (50%, 70% i 90%, kao srednjeg, velikog i submaksimalnog nivoa sile). Kendalov test pokazuju da se distribucije grešaka, tj. postignutih odstupanja nivoa sile od zadate vrednosti, razlikuju i sa aspekta apsolutnih i sa aspekta relativnih vrednosti (vrednosti izražene u %) na nivou p = 0.000. Generalno posmatrano, na osnovu rezultata se može zaključiti da u odnosu na kontrolu ispoljavanja mišićne sile u funkciji zadate zdrava i ne trenirana populacija muškaraca najviše greši u odnosu na mali nivo sile (nivo od 30% od FmaxIZO), dok su na nivoima od 50, 70 i 90% od FmaxIZO greške statistički značajno manje. To praktično znači da je sposobnost fine motorne kontrole tj. kontrolisanog ispoljavanja mišićne sile na nivou od 30% od Fmax za ispitanike predstavljalo motorički zadatak koji oni nisu mogli uspešno, odnosno precizno da realizuju, dok su kod većih nivoa sile ispitanici bili precizniji tj. manje su grešili.
PB  - Univerzitet u Nišu
T2  - Facta universitatis - series: Physical Education and Sport
T1  - Modeling variability of the assigned level of force during isometric contractions of the arms extensor muscles in untrained males
T1  - Varijabilitet kontrole ispoljavanja zadatog nivoa sile mišića opružača ruku u izometrijskom režimu rada kod netreniranih osoba muškog pola
VL  - 4
IS  - 1
SP  - 35
EP  - 48
UR  - https://hdl.handle.net/21.15107/rcub_jakov_131
ER  - 
@article{
author = "Amanović, Đurica and Milošević, Milenko and Mudrić, Radomir and Dopsaj, Milivoj and Perić, Dušan",
year = "2006",
abstract = "The research has been carried out in order to measure the variability of the development of muscle force control achieved by the arms extensor muscle within the task requirements. The experiment involved testing the arm extensor muscle by using the isometric Flat Bench Press Test. The sample consisted of 28 subjects who were students of the College of Internal Affairs in Zemun - Belgrade. The subjects had underwent five individual test trials, within which the first trial measured the maximum isometric muscle force (Fmaxizo) and in the other four cases depended on the acquired percentage of Fmaxizo at the levels of 30%, 50%, 70% and 90%. The testing was developed by using a hardware-software system applied in the Special Physical Education Laboratory at the College of Internal Affairs. The variability differences among the observed variables were measured by implementing the ANOVA variance analysis, Kandall′s and Wilcoxon′s Test. In order to establish the differences among individual variables, the Student's t-test of equal samples was used. The ANOVA results showed a statistically significant difference between the mean values and variability among all of the observed variables at the F = 6.065, p = 0.001 level, in relation to the absolute values and F = 9.956, p = 0.000 and in relation to relative force values. The results of the Student's t-test showed a statistically significant difference among the mean value of errors in the developed force between the level of 30 percent (as the smallest force of the level tested) and all the other levels of 50%, 70% and 90% (as the middle, large and submaximum level of force). Kandall′s test showed that the error distribution, that is, the level of force deviation from the force level required by the task, differs from the aspect of absolute and the aspect of relative values (values in percents) at the p = 0.000 level. According to the results, it can be concluded that in regards to the control of muscle force distribution as part of the task, a healthy and untrained male population mostly makes errors in the sense of a low level of force (at the 30 percent level of Fmaxizo), while at the level of 50, 70 and 90 percent of Fmaxizo, the errors are statistically nonsignificant. This means of the ability for fine motoric control, or creating muscle force at the level of 30 percent of Fmax, for the subjects represented a motor task which they were not able to completely realize, while in the cases where higher levels of force were used, the examinees were more precise with fewer errors., Istraživanje je obavljeno sa ciljem da se proceni varijabilitet kontrole realizacije ostvarenog nivoa mišićne sile kod mišića opružača ruku u funkciji zadatkom zadatog. Eksperimentom je bilo obuhvaćeno testiranje mišića opružača ruku primenom testa ravni bendž-pres u izometrijskim uslovima naprezanja, a realizovano je nad uzorkom sastavljenom od 28 ispitanika, studenata Više škole unutrašnjih poslova u Zemunu - Beograd. Ispitanici su tokom eksperimentalnog testiranja ostvarili po 5 pojedinačna testovna pokušaja, pri čemu je pri prvom pokušaju merena maksimalna mišićnu sila (FmaxIZO) a u preostala četiri ostvarena sila u odnosu na zadati procenat od maksimalne sile Fmax na nivou od 30%, 50%, 70% i 90%. Testiranje je izvršeno pomoću hardversko-softverskog sistema koji se koristi u Dijagnostičko prognostičkoj laboratoriji (DPL) za Specijalno fizičko obrazovanje u Višoj školi unutrašnjih poslova u Beogradu. Razlika varijabiliteta između posmatranih varijabli utvrđena je primenom analize varijanse - ANOVA, Kendalovog i Vilkoksonovog testa. Za utvrđivanje postojanja razlike između pojedinačnih varijabli korišćen je Studentov t test za parne uzorke. Rezultati ANOVE su pokazali da postoji statistički značajna razlika između srednjih vrednosti i varijabliliteta kod posmatranih varijabli na nivou F = 6.065, p = 0.001, u odnosu na apsolutne vrednosti, i F = 9.956, p = 0.000, u odnosu na relativne vrednosti sile. Rezultati Studentovog t-testa pokazali su da postoje statistički značajne razlike između srednje vrednosti grešaka ostvarene sile između nivoa od 30% (kao najnižeg testiranog nivoa sile) i svih ostalih nivoa (50%, 70% i 90%, kao srednjeg, velikog i submaksimalnog nivoa sile). Kendalov test pokazuju da se distribucije grešaka, tj. postignutih odstupanja nivoa sile od zadate vrednosti, razlikuju i sa aspekta apsolutnih i sa aspekta relativnih vrednosti (vrednosti izražene u %) na nivou p = 0.000. Generalno posmatrano, na osnovu rezultata se može zaključiti da u odnosu na kontrolu ispoljavanja mišićne sile u funkciji zadate zdrava i ne trenirana populacija muškaraca najviše greši u odnosu na mali nivo sile (nivo od 30% od FmaxIZO), dok su na nivoima od 50, 70 i 90% od FmaxIZO greške statistički značajno manje. To praktično znači da je sposobnost fine motorne kontrole tj. kontrolisanog ispoljavanja mišićne sile na nivou od 30% od Fmax za ispitanike predstavljalo motorički zadatak koji oni nisu mogli uspešno, odnosno precizno da realizuju, dok su kod većih nivoa sile ispitanici bili precizniji tj. manje su grešili.",
publisher = "Univerzitet u Nišu",
journal = "Facta universitatis - series: Physical Education and Sport",
title = "Modeling variability of the assigned level of force during isometric contractions of the arms extensor muscles in untrained males, Varijabilitet kontrole ispoljavanja zadatog nivoa sile mišića opružača ruku u izometrijskom režimu rada kod netreniranih osoba muškog pola",
volume = "4",
number = "1",
pages = "35-48",
url = "https://hdl.handle.net/21.15107/rcub_jakov_131"
}
Amanović, Đ., Milošević, M., Mudrić, R., Dopsaj, M.,& Perić, D.. (2006). Modeling variability of the assigned level of force during isometric contractions of the arms extensor muscles in untrained males. in Facta universitatis - series: Physical Education and Sport
Univerzitet u Nišu., 4(1), 35-48.
https://hdl.handle.net/21.15107/rcub_jakov_131
Amanović Đ, Milošević M, Mudrić R, Dopsaj M, Perić D. Modeling variability of the assigned level of force during isometric contractions of the arms extensor muscles in untrained males. in Facta universitatis - series: Physical Education and Sport. 2006;4(1):35-48.
https://hdl.handle.net/21.15107/rcub_jakov_131 .
Amanović, Đurica, Milošević, Milenko, Mudrić, Radomir, Dopsaj, Milivoj, Perić, Dušan, "Modeling variability of the assigned level of force during isometric contractions of the arms extensor muscles in untrained males" in Facta universitatis - series: Physical Education and Sport, 4, no. 1 (2006):35-48,
https://hdl.handle.net/21.15107/rcub_jakov_131 .