Izvorni znanstveni članak

https://doi.org/10.26582/k.55.2.9

Does the load-velocity relationship predict maximum dynamic strength in power clean from the knee?

Demostenys David da Silva ; School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil
Ricardo Berton orcid.org/0000-0002-8197-1022 ; School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil
Gustavo Soares Teixeira ; School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil
Mateus Henrique Barros ; School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil
Fernando Reiser orcid.org/0000-0001-5476-8398 ; School of Arts, Sciences and Humanities, University of São Paulo, São Paulo, Brazil
Valmor Tricoli ; School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil

Sažetak

This study investigated the predictive validity and reliability of the load-velocity relationship with the one-repetition maximum test (1RM) in power clean from the knee exercise (PC). Initially, 12 healthy young males, with no PC experience, underwent eight sessions to learn the PC technique. After the learning period, the participants visited the laboratory on four more occasions with intervals between the visits from 72 to 96 h. The first two sessions were dedicated to the actual 1RM tests, while the last two sessions were performed to measure the barbell’s load-velocity relationship at 30%, 45%, 60%, 75%, and 90% of PC 1RM. The highest peak velocity recorded at each load was used to establish the linear regression equation and, consequently, to predict 1RM values. As a result, a low validity was observed between the highest actual 1RM value and the predicted 1RM in sessions 1 and 2 (typical errors = 3.6 to 5.0 kg, coefficients of variation = 6.03 to 8.21%, effect sizes = -1.23 to -1.00, and Bland-Altman bias = 8.5 to 11.7 kg). For reliability, higher measurement errors (intraclass correlation coefficient, typical error, coefficient of variation, and width of limits of agreement at 95%) were observed for the predicted 1RM compared to the actual 1RM test. In conclusion, the load-velocity relationship was not able to predict the 1RM value with high accuracy in the PC from the knee. Moreover, the predicted 1RM presented inferior reliability than the actual 1RM test.

Ključne riječi

maximum strength; weightlifting; velocity; velocity-based training; performance

Hrčak ID:

309579

URI

https://hrcak.srce.hr/309579

Datum izdavanja:

31.12.2023.

Posjeta: 326 *