THE IMMEDIATE EFFECTS OF A TOTAL MOTION RELEASE® WARM-UP ON ACTIVE ROTATIONAL HIP RANGE OF MOTION IN OVERHEAD
R Ross Dexter, Treylan K Loftis, Adrian N Pettaway1
1University of Idaho, Moscow, ID, USA.
Background:
Reductions in hip range of motion (ROM) correlate with lower extremity injury and alterations in shoulder mechanics in overhead athletes. Such shifts in kinetic-chain dynamics may lead to additional stresses at common injury sites of the upper and lower extremities. Researchers have suggested that Total Motion Release® (TMR®) increases shoulder ROM more effectively than traditional warm-up methods. It is plausible that similar methods may produce increases in ROM at the hip.
Purpose:
To explore the effects of a TMR® based intervention on active hip rotational ROM in overhead athletes compared to a traditional athletic warm-up.
Study Design:
Randomized Control Trial.
Methods:
Twenty-two secondary school, NCAA Division I, III, and Club student-athlete participants (sex: 13 females, 9 males; sport: 9 javelin, 7 volleyball, 7 baseball; age = 19.3 ± 1.1 years; height = 178 ± 11.4 cm; weight = 76.4 ± 11.2 kg.) were randomly assigned to TMR® (TMRG; n = 11) and traditional warm-up (TWG; n = 11) groups. The TMRG performed three sets of forward flexed trunk twist and seated straight leg raise held for 20 seconds each to the side of ease with a 30-second rest interval. Active hip internal and external rotation was measured using the Clinometer smartphone application immediately before and after intervention.
Results:
The TMRG experienced significant immediate increases in active dominant hip ER,, active nondominant hip ER, active dominant total hip rotational ROM, and active nondominant total hip rotational ROM (mean change = +6.27°, + 12.2°, + 4.8, and +11.9°), compared to the TWG (mean change = +0°, + 1.9°, -1°, and 1°) respectively.
Conclusion:
Using TMR® motions and principles as a warm-up produced meaningful changes in active hip rotational ROM bilaterally in overhead athletes.
Level Of Evidence:
IIb.
