The purpose of this study is to determine whether a dynamic warmup performed during the transition period between maximal upper body muscular endurance testing (push-ups and isometric forearm/front plank) and a maximal aerobic capacity test (1.5 mile run) can enhance performance for the timed distance run.  Twelve active duty military and midshipmen will undergo body composition assessment via dual-energy x-ray absorptiometry (DXA), maximal aerobic capacity testing (VO2 max) with a ramp VO2 max treadmill test conducted at 1% incline and speed increments of 0.5 km/h every 1 min to determine VO2 max and velocity at VO2 max (vVO2 max).  Each subject will then complete additional visits to the lab separated by at least 48 hrs between randomized test to control for fatigue, order and training effect (i.e. repeated measures, within-subjects experimental design), testing the following:  i) control session, simulated physical readiness test (PRT):  5-min dynamic warmup, maximum cadence push-ups, maximum timed isometric forearm plank, a short walk followed by stationary time and then a self-paced 1.5 mile running test); ii) dynamic warmup session, same PRT with ~5 min of dynamic stretching prior to the timed 1.5 mile treadmill run.  The researchers hypothesize that a brief moderate-intensity dynamic warmup during transition from upper body maximal endurance exercise to maximal aerobic capacity running will enhance performance on the 1.5 mile run, to include the associated physiological markers (decreased whole blood lactate, subjective rate of perceived exertion, heart rate, increased running economy as evidenced by decreased oxygen consumption (decreased VO2) and decreased total caloric expenditure.

Assessment of a dynamic pre-run warmup protocol after completion of maximal upper body and core muscular endurance test

ACS Spring 2022

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