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Simulated Casualty Evacuation Performance Is Augmented by Deadlift Peak Force
Whitney M Poser1, Kara A Trautman1, Nathan D Dicks1
1North Dakota State University, PO Box 6050, Department 2620, Fargo, ND 58108.
Military Medicine
|April 3, 2019
Summary
Isometric peak force, not rate of force development, is key for military casualty evacuation tasks. Higher peak force and lean mass improve success rates in weighted and unweighted scenarios, suggesting its use in fitness evaluations.
Area of Science:
- Military Science
- Human Performance
- Biomechanics
Background:
- Military personnel require physical capabilities for tasks like casualty evacuation.
- Understanding the biomechanical determinants of successful casualty evacuation is crucial for training and selection.
- Previous research has not clearly defined the specific force-generating capacities related to casualty evacuation performance.
Purpose of the Study:
- To investigate the relationship between isometric peak force and rate of force development (RFD).
- To determine the association of these force measures with successful completion of simulated casualty evacuation under unweighted and weighted conditions.
Main Methods:
- Eighteen Army Reserve Officers' Training Corps (ROTC) participants performed maximal isometric deadlifts.
- Isometric peak force and RFD were measured using a force plate.
- Participants completed simulated casualty evacuation trials (unweighted and weighted with 18 kg duty gear).
Main Results:
- Successful completion of the weighted evacuation trial was associated with significantly greater isometric peak force and lean mass.
- Participants who passed the weighted trial also demonstrated higher Army Physical Fitness Test scores and faster unweighted evacuation times.
- Rate of force development (RFD) showed no significant relationship with performance in either evacuation trial.
Conclusions:
- Isometric deadlift peak force is a significant determinant of success in simulated casualty evacuation tasks.
- Peak force may serve as a valuable metric for periodic fitness assessments in military personnel.
- RFD is not a primary predictor of performance in this specific casualty evacuation simulation.
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