Closed-kinetic chain upper-body training improves throwing performance of NCAA division i softball players

Max P. Prokopy, Christopher D. Ingersoll, Edwin Nordenschild, Frank I. Katch, Glenn Gaesser, Arthur Weltman

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

Prokopy, MP, Ingersoll, CD, Nordenschild, E, Katch, Fl, Gaesser, GA, and Weltman, A. Closed-kinetic chain upper-body training improves throwing performance of NCAA Division I softball players. J Strength Cond Res 22(6): 1790-1798, 2008-Closed-kinetic chain resistance training (CKCRT) of the lower body is superior to open-kinetic chain resistance training (OKCRT) to improve performance parameters (e.g., vertical jump), but the effects of upper-body CKCRT on throwing performance remain unknown. This study compared shoulder strength, power, and throwing velocity changes in athletes training the upper body exclusively with either CKCRT (using a system of ropes and slings) or OKCRT. Fourteen female National Collegiate Athletic Association Division I softball player volunteers were blocked and randomly placed into two groups: CKCRT and OKCRT. Blocking ensured the same number of veteran players and rookies in each training group. Training occurred three times weekly for 12 weeks during the team's supervised off-season program. Olympic, lower-body, core training, and upper-body intensity and volume in OKCRT and CKCRT were equalized between groups. Criterion variables pre- and posttraining included throwing velocity, bench press one-repetition maximum (1RM), dynamic single-leg balance, and isokinetic peak torque and power (PWR) (at 180°·s -1) for shoulder flexion, extension, internal rotation, and external rotation (ER). The CKCRT group significantly improved throwing velocity by 2.0 mph (3.4%, p < 0.05), and the OKCRT group improved 0.3 mph (0.5%, NS). A significant interaction was observed (p < 0.05). The CKCRT group improved its 1 RM bench press to the same degree (1.9 kg) as the OKCRT group (p < 0.05 within each group). The CKCRT group improved all measures of shoulder strength and power, whereas OKCRT conferred little change in shoulder torque and power scores. Although throwing is an open-chain movement, adaptations from CKCRT may confer benefits to subsequent performance. Strength coaches can incorporate upper-body CKCRT without sacrificing gains in maximal strength or performance criteria associated with an athletic open-chain movement such as throwing.

Original languageEnglish (US)
Pages (from-to)1790-1798
Number of pages9
JournalJournal of Strength and Conditioning Research
Volume22
Issue number6
StatePublished - Nov 2008
Externally publishedYes

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Baseball
Resistance Training
Torque
Sports

Keywords

  • Open-kinetic chain
  • Resistance training
  • Shoulder peak torque
  • Shoulder power

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation
  • Medicine(all)

Cite this

Prokopy, M. P., Ingersoll, C. D., Nordenschild, E., Katch, F. I., Gaesser, G., & Weltman, A. (2008). Closed-kinetic chain upper-body training improves throwing performance of NCAA division i softball players. Journal of Strength and Conditioning Research, 22(6), 1790-1798.

Closed-kinetic chain upper-body training improves throwing performance of NCAA division i softball players. / Prokopy, Max P.; Ingersoll, Christopher D.; Nordenschild, Edwin; Katch, Frank I.; Gaesser, Glenn; Weltman, Arthur.

In: Journal of Strength and Conditioning Research, Vol. 22, No. 6, 11.2008, p. 1790-1798.

Research output: Contribution to journalArticle

Prokopy, MP, Ingersoll, CD, Nordenschild, E, Katch, FI, Gaesser, G & Weltman, A 2008, 'Closed-kinetic chain upper-body training improves throwing performance of NCAA division i softball players', Journal of Strength and Conditioning Research, vol. 22, no. 6, pp. 1790-1798.
Prokopy, Max P. ; Ingersoll, Christopher D. ; Nordenschild, Edwin ; Katch, Frank I. ; Gaesser, Glenn ; Weltman, Arthur. / Closed-kinetic chain upper-body training improves throwing performance of NCAA division i softball players. In: Journal of Strength and Conditioning Research. 2008 ; Vol. 22, No. 6. pp. 1790-1798.
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