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Acute effects of heavy-load squats on consecutive squat jump performance.
J Strength Cond Res. 2008 May; 22(3):726-30.JS

Abstract

Postactivation potentiation (PAP) and complex training have generated interest within the strength and conditioning community in recent years, but much of the research to date has produced confounding results. The purpose of this study was to observe the acute effects of a heavy-load back squat [85% 1 repetition maximum (1RM)] condition on consecutive squat jump performance. Twelve in-season Division I male track-and-field athletes participated in two randomized testing conditions: a five-repetition back squat at 85% 1RM (BS) and a five-repetition squat jump (SJ). The BS condition consisted of seven consecutive squat jumps (BS-PRE), followed by five repetitions of the BS at 85% 1RM, followed by another set of seven consecutive squat jumps (BS-POST). The SJ condition was exactly the same as the BS condition except that five consecutive SJs replaced the five BSs, with 3 minutes' rest between each set. BS-PRE, BS-POST, SJ-PRE, and SJ-POST were analyzed and compared for mean and peak jump height, as well as mean and peak ground reaction force (GRF). The BS condition's mean and peak jump height and peak GRF increased 5.8% +/- 4.8%, 4.7% +/- 4.8%, and 4.6% +/- 7.4%, respectively, whereas the SJ condition's mean and peak jump height and peak GRF decreased 2.7% +/- 5.0%, 4.0% +/- 4.9%, and 1.3% +/- 7.5%, respectively. The results indicate that performing a heavy-load back squat before a set of consecutive SJs may enhance acute performance in average and peak jump height, as well as peak GRF.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Weber KR
Human Performance Laboratory, California State University, Fullerton, California, USA.
Brown LE
No affiliation info available
Coburn JW
No affiliation info available
Zinder SM
No affiliation info available

MeSH

AdultAnalysis of VarianceCohort StudiesHumansMaleMuscle ContractionMuscle StrengthPhysical Education and TrainingPhysical EndurancePostureProbabilitySensitivity and SpecificityTask Performance and AnalysisTrack and FieldWeight-Bearing

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

18438248

Citation

Weber, Kurt R., et al. "Acute Effects of Heavy-load Squats On Consecutive Squat Jump Performance." Journal of Strength and Conditioning Research, vol. 22, no. 3, 2008, pp. 726-30.
Weber KR, Brown LE, Coburn JW, et al. Acute effects of heavy-load squats on consecutive squat jump performance. J Strength Cond Res. 2008;22(3):726-30.
Weber, K. R., Brown, L. E., Coburn, J. W., & Zinder, S. M. (2008). Acute effects of heavy-load squats on consecutive squat jump performance. Journal of Strength and Conditioning Research, 22(3), 726-30. https://doi.org/10.1519/JSC.0b013e3181660899
Weber KR, et al. Acute Effects of Heavy-load Squats On Consecutive Squat Jump Performance. J Strength Cond Res. 2008;22(3):726-30. PubMed PMID: 18438248.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Acute effects of heavy-load squats on consecutive squat jump performance. AU - Weber,Kurt R, AU - Brown,Lee E, AU - Coburn,Jared W, AU - Zinder,Steven M, PY - 2008/4/29/pubmed PY - 2008/8/8/medline PY - 2008/4/29/entrez SP - 726 EP - 30 JF - Journal of strength and conditioning research JO - J Strength Cond Res VL - 22 IS - 3 N2 - Postactivation potentiation (PAP) and complex training have generated interest within the strength and conditioning community in recent years, but much of the research to date has produced confounding results. The purpose of this study was to observe the acute effects of a heavy-load back squat [85% 1 repetition maximum (1RM)] condition on consecutive squat jump performance. Twelve in-season Division I male track-and-field athletes participated in two randomized testing conditions: a five-repetition back squat at 85% 1RM (BS) and a five-repetition squat jump (SJ). The BS condition consisted of seven consecutive squat jumps (BS-PRE), followed by five repetitions of the BS at 85% 1RM, followed by another set of seven consecutive squat jumps (BS-POST). The SJ condition was exactly the same as the BS condition except that five consecutive SJs replaced the five BSs, with 3 minutes' rest between each set. BS-PRE, BS-POST, SJ-PRE, and SJ-POST were analyzed and compared for mean and peak jump height, as well as mean and peak ground reaction force (GRF). The BS condition's mean and peak jump height and peak GRF increased 5.8% +/- 4.8%, 4.7% +/- 4.8%, and 4.6% +/- 7.4%, respectively, whereas the SJ condition's mean and peak jump height and peak GRF decreased 2.7% +/- 5.0%, 4.0% +/- 4.9%, and 1.3% +/- 7.5%, respectively. The results indicate that performing a heavy-load back squat before a set of consecutive SJs may enhance acute performance in average and peak jump height, as well as peak GRF. SN - 1533-4287 UR - https://www.unboundmedicine.com/medline/citation/18438248/Acute_effects_of_heavy_load_squats_on_consecutive_squat_jump_performance_ DB - PRIME DP - Unbound Medicine ER -