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Test-retest reliability of barbell velocity during the free-weight bench-press exercise.
J Strength Cond Res. 2011 Jan; 25(1):171-7.JS

Abstract

The purpose of this study was to calculate test-retest reliability statistics for peak barbell velocity during the free-weight bench-press exercise for loads corresponding to 10-90% of the 1-repetition maximum (1RM). Twenty-one healthy, resistance-trained men (mean ± SD age = 23.5 ± 2.7 years; body mass = 90.5 ± 14.6 kg; 1RM bench press = 125.4 ± 18.4 kg) volunteered for this study. A minimum of 48 hours after a maximal strength testing and familiarization session, the subjects performed single repetitions of the free-weight bench-press exercise at each tenth percentile (10-90%) of the 1RM on 2 separate occasions. For each repetition, the subjects were instructed to press the barbell as rapidly as possible, and peak barbell velocity was measured with a Tendo Weightlifting Analyzer. The test-retest intraclass correlation coefficients (model 2,1) and corresponding standard errors of measurement (expressed as percentages of the mean barbell velocity values) were 0.717 (4.2%), 0.572 (5.0%), 0.805 (3.1%), 0.669 (4.7%), 0.790 (4.6%), 0.785 (4.8%), 0.811 (5.8%), 0.714 (10.3%), and 0.594 (12.6%) for the weights corresponding to 10-90% 1RM. There were no mean differences between the barbell velocity values from trials 1 and 2. These results indicated moderate to high test-retest reliability for barbell velocity from 10 to 70% 1RM but decreased consistency at 80 and 90% 1RM. When examining barbell velocity during the free-weight bench-press exercise, greater measurement error must be overcome at 80 and 90% 1RM to be confident that an observed change is meaningful.

Authors+Show Affiliations

Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma, USA. mattstock@ou.eduNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

21157383

Citation

Stock, Matt S., et al. "Test-retest Reliability of Barbell Velocity During the Free-weight Bench-press Exercise." Journal of Strength and Conditioning Research, vol. 25, no. 1, 2011, pp. 171-7.
Stock MS, Beck TW, DeFreitas JM, et al. Test-retest reliability of barbell velocity during the free-weight bench-press exercise. J Strength Cond Res. 2011;25(1):171-7.
Stock, M. S., Beck, T. W., DeFreitas, J. M., & Dillon, M. A. (2011). Test-retest reliability of barbell velocity during the free-weight bench-press exercise. Journal of Strength and Conditioning Research, 25(1), 171-7. https://doi.org/10.1519/JSC.0b013e318201bdf9
Stock MS, et al. Test-retest Reliability of Barbell Velocity During the Free-weight Bench-press Exercise. J Strength Cond Res. 2011;25(1):171-7. PubMed PMID: 21157383.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Test-retest reliability of barbell velocity during the free-weight bench-press exercise. AU - Stock,Matt S, AU - Beck,Travis W, AU - DeFreitas,Jason M, AU - Dillon,Michael A, PY - 2010/12/16/entrez PY - 2010/12/16/pubmed PY - 2011/5/4/medline SP - 171 EP - 7 JF - Journal of strength and conditioning research JO - J Strength Cond Res VL - 25 IS - 1 N2 - The purpose of this study was to calculate test-retest reliability statistics for peak barbell velocity during the free-weight bench-press exercise for loads corresponding to 10-90% of the 1-repetition maximum (1RM). Twenty-one healthy, resistance-trained men (mean ± SD age = 23.5 ± 2.7 years; body mass = 90.5 ± 14.6 kg; 1RM bench press = 125.4 ± 18.4 kg) volunteered for this study. A minimum of 48 hours after a maximal strength testing and familiarization session, the subjects performed single repetitions of the free-weight bench-press exercise at each tenth percentile (10-90%) of the 1RM on 2 separate occasions. For each repetition, the subjects were instructed to press the barbell as rapidly as possible, and peak barbell velocity was measured with a Tendo Weightlifting Analyzer. The test-retest intraclass correlation coefficients (model 2,1) and corresponding standard errors of measurement (expressed as percentages of the mean barbell velocity values) were 0.717 (4.2%), 0.572 (5.0%), 0.805 (3.1%), 0.669 (4.7%), 0.790 (4.6%), 0.785 (4.8%), 0.811 (5.8%), 0.714 (10.3%), and 0.594 (12.6%) for the weights corresponding to 10-90% 1RM. There were no mean differences between the barbell velocity values from trials 1 and 2. These results indicated moderate to high test-retest reliability for barbell velocity from 10 to 70% 1RM but decreased consistency at 80 and 90% 1RM. When examining barbell velocity during the free-weight bench-press exercise, greater measurement error must be overcome at 80 and 90% 1RM to be confident that an observed change is meaningful. SN - 1533-4287 UR - https://www.unboundmedicine.com/medline/citation/21157383/Test_retest_reliability_of_barbell_velocity_during_the_free_weight_bench_press_exercise_ L2 - https://doi.org/10.1519/JSC.0b013e318201bdf9 DB - PRIME DP - Unbound Medicine ER -