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Gender And Body Height Discriminate Spinal Movement Patterns During Lifting And Lowering Tasks

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Gender And Body Height Discriminate Spinal Movement Patterns During Lifting And Lowering Tasks

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Gender and body height discriminate spinal movement patterns during lifting and lowering tasks

Mehdi Nematimoez¹, Christian Bangerter², Michael Von Arx²

¹Department of Sport Biomechanics, University of Bojnord, Bojnord, Iran.

|May 2, 2025

View abstract on PubMed

Summary

This summary is machine-generated.

This study reveals distinct spinal movement patterns (SMP) in males and females during lifting. Understanding these differences, particularly the bottom-up thoracic spine pattern in females, can inform safer manual handling strategies.

Keywords:

Anthropometry object lifting pattern frequency spine stepwise segmentation

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Area of Science:

Biomechanics
Ergonomics
Human Movement Science

Background:

Spinal movement patterns (SMP) during manual material handling are crucial for injury prevention.
Existing research often overlooks gender-specific biomechanical differences in lifting tasks.

Purpose of the Study:

To investigate the relationship between gender, anthropometric factors, and spinal movement patterns (SMP) during lifting and lowering tasks.
To identify distinct SMPs associated with different lifting techniques and demographic variables.

Main Methods:

Thirty adults performed box lifting/lowering using freestyle, squat, and stoop techniques with a 15kg box.
A stepwise segmentation approach and analysis of relative angle inflection points were used to classify SMPs.
Temporal multi-segmental interactions and their frequencies were analyzed across segments and techniques.

Main Results:

Spinal movement patterns showed varying associations with gender and anthropometrics during lifting and lowering.
Females predominantly exhibited a bottom-up SMP during stoop lifting, while males favored a simultaneous pattern.
Cluster analysis identified a bottom-up thoracic spine pattern as a key differentiator for females.

Conclusions:

The developed SMP categorization method can differentiate gender-based movement strategies during lifting.
Findings suggest potential for personalized manual material handling strategies and therapeutic interventions.
This research offers insights for occupational health, clinical rehabilitation, and sports training programs.