Trunk Extensor, Flexor and Lateral Flexor Endurance Time in Sedentary Workers Aged 20-49 Years

Area of Science:

• Exercise Physiology
• Biomechanics
• Occupational Health

Background:

• Trunk muscle endurance is crucial for daily activities and injury prevention.
• Limited research quantifies trunk endurance across different demographics and influencing factors.

Purpose of the Study:

• To quantify trunk endurance times based on age and sex.
• To identify key factors influencing trunk muscle endurance.

Main Methods:

• Isometric trunk endurance tests (extensor, flexor, side bridge) were performed by 137 sedentary workers (aged 20-49).
• Tests were conducted once in random order with 10-minute rest intervals.

Main Results:

• Age did not significantly affect endurance times.
• Sex influenced extensor and lateral flexor endurance; females excelled in extensor, males in lateral flexor tests.
• Body weight and abdominal skinfold thickness negatively correlated with extensor endurance (both sexes) and lateral flexor endurance (males).

Conclusions:

• Sex, body weight, and abdominal skinfold thickness are important considerations when assessing trunk muscle endurance.
• These findings inform targeted exercise programs and injury prevention strategies.