Acute Effects of Upper Extremity Static Stretching and Dynamic Warm-up Protocols on Range of Motion, Strength, and Power Output
METHODS: Upper extremity static and dynamic protocols were compared in 15 healthy and physically active males using a within-subject, repeated measures, and counterbalanced design. GH internal rotation (IR) and external rotation (ER) ROM, PST, and GH isokinetic concentric strength and power were measured before and after each protocol. Post-test assessments occurred over four time intervals (post-0, post-5, post-15, and post-30 minutes).
RESULTS: The results of this study demonstrated no significant test x time interactions between the static and dynamic protocols at any time interval for any of the dependent variables. However, a significant main effect occurred where GH IR ROM group mean significantly increased at the post-0 (p=<0.001), post-5 (p=0.004), post-15 (p=0.017), and post-30 (p=0.050) time intervals compared to the pre-test measurement. GH ER ROM group mean also significantly increased at the post-5 (p=0.003), post-15 (p=0.003), and post-30 (p=0.017) time intervals compared to the pre-test measurement.
CONCLUSIONS: This study did not identify a stretching or warm-up protocol that increased or decreased muscular force output. However, both protocols acutely increased GH IR and ER ROM for up to 30 minutes, suggesting that static stretching and dynamic warm-up may be similarly effective at increasing ROM. Clinicians and researchers must continue to work together to guide future research and determine the most effective stretching or warm-up protocol to maximize upper extremity performance.
Advisor:Timothy Sell, PhD, PT; John Abt, PhD, ATC; David Tumbas, MS, ATC, PES; Kevin Conley, PhD, ATC
School:University of Pittsburgh
School Location:USA - Pennsylvania
Source Type:Master's Thesis
Date of Publication:05/18/2009