Purpose: A decrease in total range of motion (ROM) of the dominant shoulder may predispose baseball athletes to increased shoulder injury risk; the most effective technique for improving ROM is unknown. The purpose of this study was to compare the immediate effects of Total Motion Release(R) (TMR) to a generic dynamic warm-up program in baseball athletes.
Methods: Baseball athletes (n=20) were randomly assigned to an intervention group: TMR(R) group (TMRG; n=10) or traditional warm-up group (TWG; n=10). Shoulder ROM measurements were recorded for internal (IR) and external (ER) rotation, the intervention was applied, and post-measurements were recorded. Each group then received the other intervention and post-measurements were again recorded.
Results: The time main effect (p <= .001) and the time x group interaction effect were significant (p <= .001) for IR and ER. Post hoc analysis revealed TMR produced significant increases in mean IR (p <= .005, d = 1.52) and ER (p <= .018, d = 1.22) of the dominant shoulder initially. When groups crossed-over, the TMRG experienced a decrease in mean IR and ER following the dynamic warm-up, while the TWG experienced a significant increase in mean IR (p <= .001, d = 3.08) and ER (p <= .001, d = 2.56) following TMR(R) intervention.
Conclusions: TMR(R) increased IR and ER of the dominant shoulder more than a dynamic warm-up. Dynamic warm-up following TMR also resulted in decreased IR and ER; however, TMR(R) following dynamic warm-up significantly improved IR and ER.
Practical Application: Based on these results, TMR(R) is more effective than a generic dynamic warm-up for improving dominant shoulder ROM in baseball players.
Copyright (C) 2017 by the National Strength & Conditioning Association.