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- Title
Reliability of kinematic parameters of power snatch from recreationally-trained weightlifters.
- Authors
SANTOS NASCIMENTO, VICTOR ALEXANDER; PEREIRA, GUSTAVO; DA SILVA PASSOS, RAFAEL; BARROS CASTRO, FERNANDA; ALVES OLIVEIRA, ALINNE; MACHADO, MARCO; KOCH, ALEXANDER J.; PEREIRA, RAFAEL
- Abstract
Introduction. The Olympic weightlifting movements (snatch, clean and jerk) and their variations (snatch and clean deadlift, high pull, etc.) have been widely used in order to improve performance in many sports, but there are no normative data, nor data on reliability of kinematic parameters for power snatch from recreational weightlifters. Aim of Study. This study aimed to quantify the reliability and the minimal detectable change of kinematic parameters from bar displacement during a power snatch movement in non-professional (i.e., recreationally trained) weightlifters. Material and Methods. Sixteen healthy (13 male), trained, but non-competitive weightlifters, volunteered to participate in this study. Each volunteer performed 2 power snatches at 60% of their RM. The barbell path was recorded using a high-speed camera and the data was processed offline to obtain barbell position coordinates. Elapsed time to complete the movement, trunk and knee position at catching, the kinematic parameters from horizontal and vertical bar displacements, vertical velocity and acceleration were obtained for each of the 5 movement phases (1st pull, transition, 2nd pull, turnover and drop). Descriptive data, intraclass coefficient correlation (ICC) and minimal detectable change (MDC) from each studied variable were obtained and presented. Results. Our results indicated low to excellent reliability for studied variables, with the initial phases of the lift (i.e., 1st pull, transition and 2nd pull) displaying better reliability, while the later phases of the movement (turnover and drop) exhibited poorer reliability for a majority of variables. Conclusions. The presented data, with a comprehensive description of normative data obtained from the power snatch of recreational weightlifters could help coaches to evaluate power snatch performance as a conditioning tool for recreational athletes.
- Subjects
WEIGHT lifters; REFERENCE values; WEIGHT lifting; INTRACLASS correlation; COACHES (Athletics); BARBELLS; RELIABILITY in engineering
- Publication
Trends in Sport Sciences, 2021, Vol 28, Issue 3, p203
- ISSN
2299-9590
- Publication type
Article
- DOI
10.23829/TSS.2021.28.3-5