Related Experiment Video
Updated: May 22, 2026

Muscle Function Obtained with Motion Mode Ultrasound and Surface Electromyography during Core Endurance Exercise
Published on: August 25, 2022
Integration core exercises elicit greater muscle activation than isolation exercises
Jinger S Gottschall1, Jackie Mills, Bryce Hastings
1Department of Kinesiology, The Pennsylvania State University, University Park, Pennsylvania, USA. jinger@psu.edu
Integrated core exercises targeting distal muscles like the deltoids and gluteals maximize activation of primary trunk muscles. This approach enhances strength, stability, and mobility while reducing injury risk.
Area of Science:
- Exercise Physiology
- Biomechanics
- Sports Medicine
Background:
- Core training is recommended by leading health organizations to enhance stability, prevent injuries, and maintain mobility.
- Numerous exercises target core muscles, but optimal choices for maximizing benefits remain unclear.
Purpose of the Study:
- To compare the activation of primary trunk muscles during integrated core exercises (engaging distal muscles) versus isolation exercises (engaging proximal muscles).
Main Methods:
- Twenty participants (10 male, 10 female) performed 16 randomized exercises.
- Surface electromyography measured muscle activity in the anterior deltoid, rectus abdominus, external abdominal oblique, erector spinae (lumbar and thoracic), and gluteus maximus.
Main Results:
- Exercises requiring deltoid and gluteal muscle activation demonstrated the highest recruitment of abdominal and lumbar muscles.
- Integrated exercises led to greater primary trunk muscle activation compared to isolation exercises.
Conclusions:
- An integrated core training routine incorporating distal muscle activation (deltoids, gluteals) is optimal for maximizing strength, endurance, stability, and mobility.
- This approach is recommended for enhancing functional gains and peak performance while minimizing injury risk.
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