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Women's load carriage performance using modular lightweight load-carrying equipment.

Wen Ling¹, Vern Houston, Yung-Sheng Tsai

¹Department of Physical Therapy, New York University, 380 2nd Avenue, New York, NY 10010, USA.

Military Medicine

|December 21, 2004

Summary

This study found that heavier loads increase women's double-limb support time and alter their gait when using Modular Lightweight Load-Carrying Equipment (MOLLE). Hip abductor strength predicted center of gravity changes, and some hip belt modifications were needed.

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Area of Science:

Biomechanics
Human Factors Engineering
Sports Science

Background:

Load carriage is crucial for military and recreational activities.
Understanding equipment fit and performance in women is essential.
Modular Lightweight Load-Carrying Equipment (MOLLE) is widely used.

Purpose of the Study:

Evaluate Modular Lightweight Load-Carrying Equipment (MOLLE) fit for women across various loads.
Assess women's load carriage performance changes after a simulated march.
Examine the link between muscle strength and load carriage performance in women using MOLLE.

Main Methods:

Seven physically active women participated.
Loads ranged from 0 to 50 pounds in 10-pound increments.

Related Experiment Videos

Gait parameters and center of gravity (COG) excursions were measured.

Shoulder and hip abductor muscle strength were assessed.

Main Results:

Increased loads led to longer double-limb support and shorter single-limb support times.
Higher loads resulted in increased trunk forward inclination and vertical COG excursion.
Decreased knee and medial-lateral COG excursions were observed with increased loads.
Hip abductor strength correlated significantly with COG vertical excursion.

Conclusions:

Load carriage significantly impacts women's gait biomechanics when using MOLLE.
Hip abductor strength is a key factor in maintaining stability during load carriage.
MOLLE hip belt modifications may be necessary for optimal weight distribution in women.