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Neuromuscular Strength and Power Predict Musculoskeletal Injury and Attrition During Marine Corps Recruit Training
Mita Lovalekar1, Karen A Keenan2, Patrick Peterson1
1Neuromuscular Research Laboratory, University of Pittsburgh, Pittsburgh, PA 15203, USA.
Military Medicine
|June 26, 2024
Summary
Musculoskeletal injuries (MSIs) and attrition in U.S. Marine Corps (USMC) recruits are linked to reduced muscular power and smoking. Interventions focusing on neuromuscular training and smoking cessation can improve training completion and military readiness.
Area of Science:
- Military Medicine
- Sports Science
- Biomechanics
Background:
- High rates of musculoskeletal injuries (MSIs) and attrition challenge military recruit training.
- Understanding modifiable risk factors is key to enhancing training completion and military readiness.
- Causes of MSIs and attrition in U.S. Marine Corps (USMC) recruits are not well understood.
Purpose of the Study:
- To investigate demographic, psychological, and physiological predictors of MSIs and attrition in USMC recruits.
- To identify modifiable risk factors for injury and attrition during recruit training.
- To inform strategies for improving recruit outcomes and military readiness.
Main Methods:
- Prospective cohort study of USMC recruits at Parris Island and San Diego.
- Baseline data collected on strength measures (countermovement jumps, isometric mid-thigh pulls) and surveys.
- Follow-up data on MSIs and attrition analyzed using multiple logistic regression.
Main Results:
- Lower relative peak power and shorter eccentric deceleration duration predicted MSIs.
- Lower body mass index and prior lower extremity MSIs increased risk for lower extremity injuries.
- Reduced eccentric deceleration impulse, prolonged time to peak force, and cigarette use were associated with attrition.
Conclusions:
- MSIs and attrition significantly impact military readiness and incur costs.
- Reduced muscular power and cigarette smoking are key modifiable risk factors.
- Neuromuscular training, nutrition, exercise, and smoking cessation programs are recommended to mitigate MSIs and attrition.
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