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Acute Effects of Various Weighted Bat Warm-Up Protocols on Bat Velocity

Reyes, G Francis1; Dolny, Dennis2

Journal of Strength & Conditioning Research: October 2009 - Volume 23 - Issue 7 - pp 2114-2118
doi: 10.1519/JSC.0b013e3181b3dd32
Original Research

Reyes, GF and Dolny, D. Acute effects of various weighted bat warm-up protocols on bat velocity. J Strength Cond Res 23(7): 2114-2118, 2009-Although research has provided evidence of increased muscular performance following a facilitation set of resistance exercise, this has not been established for use prior to measuring baseball bat velocity. The purpose of this study was to determine the effectiveness of selected weighted bat warm-up protocols to enhance bat velocity in collegiate baseball players. Nineteen collegiate baseball players (age = 20.15 ± 1.46 years) were tested for upper-body strength by a 3-repetition maximum (RM) bench press (mean = 97.98 ± 14.54 kg) and mean bat velocity. Nine weighted bat warm-up protocols, utilizing 3 weighted bats (light = 794 g; standard = 850 g; heavy = 1,531 g) were swung in 3 sets of 6 repetitions in different orders. A control trial involved the warm-up protocol utilizing only the standard bat. Pearson product correlation revealed a significant relationship between 3RM strength and pretest bat velocity (r = 0.51, p = 0.01). Repeated measures analysis of variance (ANOVA) revealed no significant treatment effects of warm-up protocol on bat velocity. However, the order of standard, light, heavy bat sequence resulted in the greatest increase in bat velocity (+6.03%). These results suggest that upper-body muscle strength influences bat velocity. It appears that the standard, light, heavy warm-up order may provide the greatest benefit to increase subsequent bat velocity and may warrant use in game situations.

1Department of Kinesiology and Physical Education, Northern Illinois University, DeKalb, Illinois; and 2Department of Health, Physical Education, and Recreation, Utah State University, Logan, Utah. Human Performance Laboratory, Department of HPERD, University of Idaho, Moscow, ID 83844-2401

Address correspondence to Cisco Reyes, gfreyes@vandals.uidaho.edu.

© 2009 National Strength and Conditioning Association