Changes in Muscle Activity among College Pitchers Using 5- to 12-Oz Weighted Baseball
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[OBJECTIVES] Several studies have reported that weighted baseball (WB) training is effective in improving ball speed; however, the weight of the ball suitable for training remains unclear. This study aimed to investigate the changes in muscle activity during pitching using 5- to12-oz WBs and to provide basic data for training programs to improve pitching speed. [METHODS] The subjects of this study were 10 overhand pitchers who had more than 5 years of experience. Muscle activity was measured and analyzed at 70–85% of throwing baseball maximum effort (TBME) during soft toss (ST) and TBME was evaluated using electromyography. [RESULTS] As the ball weight increased, muscle activity also increased in all pitching phases. Muscle activity was higher during ST with WBs heavier than 10 or 11oz than during TBME, indicating that the loads on the shoulder and elbow joint muscles increased. Conversely, muscle activity during ST with 5- to 7-oz WBs was lower than that during TBME, although phase and muscle group differences were observed. [CONCLUSIONS] The results of this study suggest that training with 8- to 10-oz WBs could increase muscle strength and activity, although the effect may vary with fitness level and muscle strength.
Abstract
[OBJECTIVES] Several studies have reported that weighted baseball (WB) training is effective in improving ball speed; however, the weight of the ball suitable for training remains unclear. This study aimed to investigate the changes in muscle activity during pitching using 5- to12-oz WBs and to provide basic data for training programs to improve pitching speed. [METHODS] The subjects of this study were 10 overhand pitchers who had more than 5 years of experience. Muscle activity was measured and analyzed at 70–85% of throwing baseball maximum effort (TBME) during soft toss (ST) and TBME was evaluated using electromyography. [RESULTS] As the ball weight increased, muscle activity also increased in all pitching phases. Muscle activity was higher during ST with WBs heavier than 10 or 11oz than during TBME, indicating that the loads on the shoulder and elbow joint muscles increased. Conversely, muscle activity during ST with 5- to 7-oz WBs was lower than that during TBME, although phase and muscle group differences were observed. [CONCLUSIONS] The results of this study suggest that training with 8- to 10-oz WBs could increase muscle strength and activity, although the effect may vary with fitness level and muscle strength.
참고문헌 (47)
- Krajnik S, "Shoulder injuries in US high school baseball and softball athletes, 2005-2008", Pediatrics, 125, pp.497~501 (2010)
- Aguinaldo AL, "Correlation of throwing mechanics with elbow valgus load in adult baseball pitchers", Am J Sports Med, 37, pp.2043~2048 (2009)
- Aguinaldo AL, "Effects of upper trunk rotation on shoulder joint torque among baseball pitchers of various levels", J Appl Biomech, 23, pp.42~51 (2007)
- Werner SL, "Relationships between throwing mechanics and shoulder distraction in professional baseball pitchers", Am J Sports Med, 29, pp.354~358 (2001)
- Lyman S, "Effect of pitch type, pitch count, and pitching mechanics on risk of elbow and shoulder pain in youth baseball pitchers", Am J Sports Med, 30, pp.463~468 (2002)
- Bushnell BD, "Association of maximum pitch velocity and elbow injury in professional baseball pitchers", Am J Sports Med, 38, pp.728~732 (2010)
- Chalmers PN, "Fastball pitch velocity helps predict ulnar collateral ligament reconstruction in major league baseball pitchers", Am J Sports Med, 44, pp.2130~2135 (2016)
- Hurd WJ, "Pitch velocity is a predictor of medial elbow distraction forces in the uninjured high school–aged baseball pitcher", Sports Health, 4, pp.415~418 (2012)
- Wilk KE, "Biomechanics of the overhead throwing motion", Sports Med Arthrosc Rev, 8, pp.124~134 (2000)
- Wilk KE, "Current concepts in the rehabilitation of the overhead throwing athlete", Am J Sports Med, 3, pp.136~151 (2002)
- DeRenne C, "Effects of under and overweighed implement training on pitching velocity", J Strength Cond Res, 8, pp.247~250 (1994)
- DeRenne C, "Effects of baseball weighted implement training : A brief review", J Strength Cond Res, 31, pp.30~37 (2009)
- Escamilla RF, "Effects of throwing overweight and underweight baseballs on throwing velocity and accuracy", Sports Med, 29, pp.259~272 (2000)
- Pavlovich L, "Weighted ball training started years ago", Collegiate Baseball, 4, pp.8~ (2014)
- Fleisig GS, "Kinetic comparison among the fastball, curveball, change-up, and slider in collegiate baseball pitchers", Am J Sports Med, 34, pp.423~430 (2006)
- Yang WW, "Performance enhancement among adolescent players after 10 weeks of pitching training with appropriate baseball weights", J Strength Cond Res, 27, pp.3245~3251 (2013)
- DeRenne C, "Increasing throwing velocity", Athletic Journal, 65, pp.36~39 (1985)
- DeRenne C, "Effect of weighted implement training on throwing velocity", J Appl Sport Sci Res, 4, pp.16~19 (1990)
- Fleisig GS, "Biomechanics analysis of weighted-ball exercise for baseball pitchers", Sports Health, 9, pp.210~215 (2017)
- Chiang KD, "Effects of throwing different weight baseballs on pitching movement and velocity", Chin J Sports Biomech, 2, pp.22~30 (2010)
- 신윤아, "Effects of weighted baseball throwing during warm-up on ball velocity and upper extremity muscle activation in baseball pitchers", Journal of exercise rehabilitation, 14(3), pp.436~444 (2018), 한국운동재활학회
- Meister K, "Injuries to the shoulder in the throwing athlete. Part one:biomechanics", pathophysiology, Am J Sports Med, pp.2000, 28[DOI]
- DiGiovine NM, "An electromyographic analysis of the upper extremity in pitching", J Shoulder Elbow Surg, 1, pp.15~25 (1992)
- US Department of Health and Human Service, "Selected topics in surface electromyography for use in the occupational setting: expert perspectives", pp.2~5 (1992), DHHSN(NIOSH) Publication
- Cram JR, "Introduction to Surface Electromyography", pp.257~349 (1998), Aspen Publication
- Stone AV, "Defining the Long-Toss : A Professional Baseball Epidemiological Study", Orthop J Sports Med, 5(2), pp.2325967116686773~ (2017)
- Marsh JA, "Effects of a sixweek weighted-implement throwing program on baseball pitching velocity, kinematics, arm stress, and arm range of motion", Peer J, 6, pp.e6003~ (2018)
- Kim BG, "The effect of game participation by a professional pitcher on isokinetic and isometric muscle", INDJSRT, 7, pp.123~132 (2015)
- Reinold MM, "Effect of a 6-week weighted baseball throwing program on pitch velocity, pitching arm biomechanics, passive range of motion, and injury rates", Sports Health, 10, pp.327~333 (2018)
- Erickson BJ, "Do clinical results and return-to-sport rates after ulnar collateral ligament reconstruction differ based on graft choice and surgical technique?", Orthop J Sports Med, 4 (2016)
- Erickson BJ, "Trends in medial ulnar collateral ligament reconstruction in the United States : A retrospective review of a large private-payer database from 2007 to 2011", Am J Sports Med, 43, pp.1770~1774 (2015)
- Lipinski CL, "Surface electromyography of the forearm musculature during an overhead throwing rehabilitation progression program", Phys Ther Sport, 33, pp.109~116 (2018)
- Chen FS, "Medial elbow problems in the overhead throwing athlete", J Am Acad Orthop Surg, 9, pp.99~113 (2001)
- Hang YS, "Biomechanical study of the pitching elbow", Int Orthop, 3, pp.217~223 (1979)
- Bradley JP, "Electromyographic analysis of muscle action about the shoulder", Clin Sports Med, 10, pp.789~805 (1991)
- Jobe FW, "An EMG analysis of the shoulder in throwing and pitching : A preliminary report", Am J Sports Med, 11, pp.3~5 (1983)
- Jobe FW, "An EMG analysis of the shoulder in pitching : A second report", Am J Sports Med, 12, pp.218~220 (1984)
- Kronberg M, "Muscle activity and coordination in the normal shoulder. An electromyographic study", Clin Orthop Relat Res, 257, pp.76~85 (1990)
- Warner JJ, "Patterns of flexibility, laxity, and strength in normal shoulders and shoulders with instability and impingement", Am J Sports Med, 18, pp.366~375 (1990)
- Fleisig G, "Variability in baseball pitching biomechanics among various levels of competition", Sports Biomech, 8, pp.10~21 (2009)
- Werner SL, "Biomechanics of the elbow during baseball pitching", Int J Sports Phys Ther, 17, pp.274~278 (1993)
- Otoshi K, "The proximal origins of the flexor-pronator muscles and their role in the dynamic stabilization of the elbow joint : An anatomical study", Surg Radiol Anat, 36, pp.289~294 (2014)
- Pappas AM, "Biomechanics of baseball pitching. A preliminary report", Am J Sports Med, 13, pp.216~222 (1985)
- Ouellette H, "Spectrum of shoulder injuries in the baseball pitcher", Skeletal Radiol, 37, pp.491~498 (2008)
- Dun S, "A biomechanical comparison of youth baseball pitches:Is the curveball potentially harmful?", Am J Sports Med, 36, pp.686~692 (2008)
- Keeley DW, "Biomechanical analysis of forearm proration and its relationship to ball movement for the two-seam and four-seam fastball pitches", J Strength Cond Res, 24, pp.2366~2371 (2010)
- Sabick MB, "Valgus torque in youth baseball pitchers : A biomechanical study", J Shoulder Elbow Surg, 13, pp.349~355 (2004)