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® (TMR) to a generic dynamic warm-up program in baseball athletes.
Baseball athletes (n=20) were randomly assigned to an intervention group: TMR® 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.
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® intervention.
TMR® 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® following dynamic warm-up significantly improved IR and ER.
Based on these results, TMR® is more effective than a generic dynamic warm-up for improving dominant shoulder ROM in baseball players.
1Mount Saint Mary College: Newburgh, NY ;
2University of Idaho: Moscow, Idaho
Corresponding Author: Stephen C Gamma 7 Purple Heart Way Montgomery, New York 12549 (845) 863-7527 Fax: (845) 569-3589 Stephen.Gamma@msmc.edu