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  1. Home
  3. Loading Patterns During Landing Tasks In Active-duty Special Operations Forces Personnel.
  1. Home
  3. Loading Patterns During Landing Tasks In Active-duty Special Operations Forces Personnel.

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Loading Patterns During Landing Tasks in Active-Duty Special Operations Forces Personnel.

Tatiana E Djafar1, Alexa K Johnson2, Kathleen M Poploski3

  • 1Sports Medicine Research Institute, University of Kentucky, Lexington.

Journal of Athletic Training
|June 5, 2026

View abstract on PubMed

Summary
This summary is machine-generated.

Special Operations Forces (SOF) personnel exhibit knee strength asymmetries and land with greater force on their dominant limb. However, factors beyond knee strength appear to influence knee mechanics during landing tasks for this group.

Keywords:
knee strengthlanding mechanicsmilitary

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Area of Science:

  • Biomechanics
  • Sports Medicine
  • Military Health

Background:

  • Musculoskeletal injuries are prevalent in the military, particularly affecting the knee joint during jumping and landing activities.
  • Special Operations Forces (SOF) personnel face elevated risks of musculoskeletal injury due to demanding occupational tasks.

Purpose of the Study:

  • To analyze loading patterns and landing strategies in SOF personnel during various landing exercises.
  • To investigate the relationship between knee strength, landing knee mechanics, and shock attenuation capabilities.

Main Methods:

  • A cross-sectional study involving 224 uninjured male SOF personnel.
  • Biomechanical analysis of double-legged drop landings (DLDL) and single-legged drop landings (SLDL).
  • Isokinetic strength testing of quadriceps and hamstring muscles, measuring knee-extension strength (KES) and knee-flexion strength.

Main Results:

  • Participants showed greater KES and landed with higher forces on their dominant limb during DLDL.
  • No significant asymmetries were found in knee kinematics between limbs.
  • Correlations were observed between knee and ankle kinematics and peak vertical ground reaction forces (VGRFs) during DLDL and nondominant SLDL.

Conclusions:

  • While knee mechanics are crucial for shock attenuation, factors other than muscular strength likely govern knee mechanics during landing in SOF personnel.
  • The findings suggest a complex interplay of factors influencing landing mechanics and injury risk in this high-demand population.