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Validity And Reliability Of Methods To Determine Barbell Displacement In Heavy Back Squats: Implications For Velocity-Based Training, Brendyn B. Appleby, Harry Banyard, Prue Cormie, Stuart J. Cormack, Robert U. Newton
Validity And Reliability Of Methods To Determine Barbell Displacement In Heavy Back Squats: Implications For Velocity-Based Training, Brendyn B. Appleby, Harry Banyard, Prue Cormie, Stuart J. Cormack, Robert U. Newton
Research outputs 2014 to 2021
The purpose of this study was to investigate the validity and reliability of methods for determining barbell displacement during heavy back squats. Twelve well-trained rugby union players (mean ± SD 1 repetition maximum [1RM] 90° squat = 196.3 ± 29.2 kg) completed 2 sets of 2 repetitions at 70, 80, and 90% of 1RM squats. Barbell displacement was derived from 3 methods across 4 load categories (120–129, 140–149, 160–169, and 180–189 kg) including: a (a) linear position transducer (LPT) attached 65 cm left of barbell center, (b) 3D motion analysis tracking of markers attached to either end of a barbell, …