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Effect of Warm-up With Different Weighted Bats on Normal Baseball Bat Velocity

Montoya, Brian S; Brown, Lee E; Coburn, Jared W; Zinder, Steven M

Journal of Strength & Conditioning Research:
doi: 10.1519/JSC.0b013e3181a3929e
Original Research
Abstract

Montoya, BS, Brown, LE, Coburn, JW, and Zinder, SM. Effect of warm-up with different weighted bats on normal baseball bat velocity. J Strength Cond Res 23(5): 1566-1569, 2009-Traditionally, baseball players have used a heavy bat for warm-up before competition. Because bat velocity is an essential component to hitting a baseball, and because players warm up differently, there is a need to investigate the best way to maximize post warm-up bat velocity. The purpose of this study was to determine the effects of warm-up with different weighted bats on normal baseball bat velocity. Nineteen recreational male baseball players (age, 24.5 ± 3.9 years; height, 181.1 ± 8.4 cm; body mass, 87.9 ± 18.4 kg) participated in this study. Three different randomized warm-up conditions were completed and analyzed for velocity and for their effect on post warm-up normal baseball bat velocity. Subjects were instructed to perform 5 maximal swings with each of 3 different weighted bats-light (LB = 9.6 oz), normal (NB = 31.5 oz), and heavy (HB = 55.2 oz)-followed by 30-second rest and then 5 swings of the NB. Analysis of variance revealed that warm-up velocity of the LB (63.57 ± 3.58 mph) was significantly (p < 0.05) faster than that of NB (51.25 ± 3.01 mph) and HB (41.79 ± 3.01 mph), whereas warm-up velocity of NB was also significantly faster than that of HB. For post warm-up, LB (52.29 ± 2.68 mph) and NB (50.60 ± 3.04 mph) produced significantly faster velocity of the normal bat than the HB (48.26 ± 2.98 mph). Warming up with 5 swings of a light or normal bat appears to increase post warm-up velocity of the normal bat when compared with warming up with a heavy bat after a rest period of 30 seconds. Within the bat weight spectrum of this study, it is suggested that when preparing to hit, 5 warm-up swings with either a light or normal bat will allow a player to achieve the greatest velocity of their normal bat.

Author Information

Human Performance Laboratory, Department of Kinesiology, California State University, Fullerton, California

Address correspondence to Dr. Lee E. Brown, leebrown@fullerton.edu.

© 2009 National Strength and Conditioning Association