Efficacy Of Core Muscle Stabilization on Recruitment Order Lumbar Mobility and Stability in Healthy Subjects with Altered Recruitment of Transverse Abdominis Muscles

Abstract

Background: The transversus abdominis (TrA) plays a vital role in spinal stability and functional movement. Altered recruitment of this muscle, even in healthy individuals, can compromise lumbar mobility and stability, potentially predisposing them to low back dysfunction. Core stabilization exercises have been shown to enhance deep muscle control, but limited evidence exists in healthy populations with altered TrA activation.

Aim: This study aimed to evaluate the effectiveness of core muscle stabilization training on recruitment order, lumbar mobility, and lumbar stability in healthy young adults with altered TrA activation.

Methods: Thirty-six participants meeting the inclusion criteria were randomly allocated into an experimental group (n = 18), which received a four-week supervised core stabilization program, and a control group (n = 18), which continued routine activities. Recruitment order of TrA was measured using a Pressure Biofeedback Unit, lumbar mobility with the Modified Schober’s Test, and lumbar stability with plank endurance time. Assessments were performed at baseline and after four weeks. At baseline, both groups were comparable (p

> 0.05). Post-intervention, the experimental group demonstrated significant improvements in recruitment order (11.92 ± 1.49 vs 7.84 ± 1.61 mmHg), lumbar mobility (6.17 ± 0.59 vs 4.42 ± 0.70 cm), and lumbar stability (66.14 ± 12.09 vs 41.41 ± 10.34 s) compared to the control group, with all differences highly significant (p < 0.001). Within-group analyses confirmed significant gains in both groups, though the experimental group achieved markedly greater improvements.

Conclusion: Core stabilization training effectively enhanced TrA recruitment, lumbar mobility, and spinal stability in healthy young adults with altered muscle activation. These findings highlight the value of core exercises not only in rehabilitation but also as a preventive and performance-enhancing strategy to promote long-term spinal health.