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The Effects of Ballistic and Nonballistic Bench Press on Mechanical Variables.
J Strength Cond Res. 2018 Dec; 32(12):3333-3339.JS

Abstract

Moir, GL, Munford, SN, Moroski, LL, Davis, SE. The effects of ballistic and nonballistic bench press on mechanical variables. J Strength Cond Res 32(12): 3333-3339, 2018-The purpose of this study was to investigate the effects of ballistic and nonballistic bench press performed with loads equivalent to 30 and 90% 1 repetition maximum (1RM) on mechanical variables. Eleven resistance-trained men (age: 23.0 ± 1.4 years; mass: 98.4 ± 14.4 kg) attended 4 testing sessions where they performed one of the following sessions: (a) 3 sets of 5 nonballistic repetitions performed with a load equivalent to 30% 1RM (30N-B), (b) 3 sets of 5 ballistic repetitions performed with a load equivalent to 30% 1RM (30B), (c) 3 sets of 4 nonballistic repetitions with a load equivalent to 90% 1RM (90N-B), or (d) 3 sets of 4 ballistic repetitions with a load equivalent to 90% 1RM (90B). Force plates and a 3-dimensional motion analysis system were used to determine the velocity, force, power output (PO), and work during each repetition. The heavier loads resulted in significantly greater forces applied to the barbell (mean differences: 472-783 N, p < 0.001), but lower barbell velocities (mean differences: 0.85-1.20 m·s, p < 0.001) and PO (mean differences: 118-492 W, p ≤ 0.022). The ballistic conditions enhanced the mechanical variables only at the lower load, with 30B producing significantly greater force (mean difference: 263 N, p < 0.001), velocity (mean difference: 0.33 m·s, p < 0.001), and PO (mean difference: 335 W, p < 0.001) compared with 30N-B. Furthermore, the increase in PO across the 3 sets in 30B was significantly different from all other conditions (p = 0.013). The total mechanical work performed was significantly greater for the conditions with the heavier loads compared with those with the lighter loads (mean differences: 362-5,600 J, p < 0.001) and that performed during the ballistic conditions was significantly greater than that performed during the nonballistic conditions with the same load (mean differences: 945-1,030 J, p < 0.001). Ballistic bench press may be an effective exercise for developing PO, and multiple sets may elicit postactivation potentiation that enhances force production. However, these benefits may be negated at heavier loads.

Authors+Show Affiliations

Department of Exercise Science, East Stroudsburg University of Pennsylvania, East Stroudsburg, Pennsylvania.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28225524

Citation

Moir, Gavin L., et al. "The Effects of Ballistic and Nonballistic Bench Press On Mechanical Variables." Journal of Strength and Conditioning Research, vol. 32, no. 12, 2018, pp. 3333-3339.
Moir GL, Munford SN, Moroski LL, et al. The Effects of Ballistic and Nonballistic Bench Press on Mechanical Variables. J Strength Cond Res. 2018;32(12):3333-3339.
Moir, G. L., Munford, S. N., Moroski, L. L., & Davis, S. E. (2018). The Effects of Ballistic and Nonballistic Bench Press on Mechanical Variables. Journal of Strength and Conditioning Research, 32(12), 3333-3339. https://doi.org/10.1519/JSC.0000000000001835
Moir GL, et al. The Effects of Ballistic and Nonballistic Bench Press On Mechanical Variables. J Strength Cond Res. 2018;32(12):3333-3339. PubMed PMID: 28225524.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The Effects of Ballistic and Nonballistic Bench Press on Mechanical Variables. AU - Moir,Gavin L, AU - Munford,Shawn N, AU - Moroski,Lindsey L, AU - Davis,Shala E, PY - 2017/2/23/pubmed PY - 2019/2/5/medline PY - 2017/2/23/entrez SP - 3333 EP - 3339 JF - Journal of strength and conditioning research JO - J Strength Cond Res VL - 32 IS - 12 N2 - Moir, GL, Munford, SN, Moroski, LL, Davis, SE. The effects of ballistic and nonballistic bench press on mechanical variables. J Strength Cond Res 32(12): 3333-3339, 2018-The purpose of this study was to investigate the effects of ballistic and nonballistic bench press performed with loads equivalent to 30 and 90% 1 repetition maximum (1RM) on mechanical variables. Eleven resistance-trained men (age: 23.0 ± 1.4 years; mass: 98.4 ± 14.4 kg) attended 4 testing sessions where they performed one of the following sessions: (a) 3 sets of 5 nonballistic repetitions performed with a load equivalent to 30% 1RM (30N-B), (b) 3 sets of 5 ballistic repetitions performed with a load equivalent to 30% 1RM (30B), (c) 3 sets of 4 nonballistic repetitions with a load equivalent to 90% 1RM (90N-B), or (d) 3 sets of 4 ballistic repetitions with a load equivalent to 90% 1RM (90B). Force plates and a 3-dimensional motion analysis system were used to determine the velocity, force, power output (PO), and work during each repetition. The heavier loads resulted in significantly greater forces applied to the barbell (mean differences: 472-783 N, p < 0.001), but lower barbell velocities (mean differences: 0.85-1.20 m·s, p < 0.001) and PO (mean differences: 118-492 W, p ≤ 0.022). The ballistic conditions enhanced the mechanical variables only at the lower load, with 30B producing significantly greater force (mean difference: 263 N, p < 0.001), velocity (mean difference: 0.33 m·s, p < 0.001), and PO (mean difference: 335 W, p < 0.001) compared with 30N-B. Furthermore, the increase in PO across the 3 sets in 30B was significantly different from all other conditions (p = 0.013). The total mechanical work performed was significantly greater for the conditions with the heavier loads compared with those with the lighter loads (mean differences: 362-5,600 J, p < 0.001) and that performed during the ballistic conditions was significantly greater than that performed during the nonballistic conditions with the same load (mean differences: 945-1,030 J, p < 0.001). Ballistic bench press may be an effective exercise for developing PO, and multiple sets may elicit postactivation potentiation that enhances force production. However, these benefits may be negated at heavier loads. SN - 1533-4287 UR - https://www.unboundmedicine.com/medline/citation/28225524/The_Effects_of_Ballistic_and_Nonballistic_Bench_Press_on_Mechanical_Variables_ L2 - http://dx.doi.org/10.1519/JSC.0000000000001835 DB - PRIME DP - Unbound Medicine ER -