Effect of long-term isometric training on core/torso stiffness

Area of Science:

• Biomechanics
• Sports Science
• Exercise Physiology

Background:

• Core stiffness is linked to athletic performance, but optimal training methods remain debated.
• Understanding how to effectively train core stiffness is essential for athletes and injury rehabilitation.

Purpose of the Study:

• To investigate if long-term changes in core stiffness can be achieved through training.
• To compare the effectiveness of isometric versus dynamic core training protocols on stiffness.
• To examine the influence of prior training experience (naive vs. savvy athletes) on training outcomes.

Main Methods:

• A 6-week core training intervention involving isometric, dynamic, and control groups.
• Passive and active core stiffness were measured before and after the intervention.
• Participants included healthy males, categorized as either physically naive or experienced Muay Thai athletes.

Main Results:

• Passive core stiffness significantly increased following the isometric training protocol.
• Dynamic training showed a smaller, less significant increase in passive core stiffness.
• No significant changes in active core stiffness were observed across any training group.

Conclusions:

• Isometric core training is superior to dynamic training for enhancing passive core stiffness.
• Increased core stiffness may improve load-bearing capacity, reduce vertebral micromovements, and enhance limb movement.
• These findings suggest a potential mechanism for the reported benefits of core training in reducing back and knee injuries.