Introduction: Dynamic Neuromuscular Stabilization is a method based on the activation of the whole trunk stabilization system, which helps to establish ideal intra-abdominal pressure while imitating movement patterns from early life. It can be used for people with pain, joint overload, or other abnormalities. Deep muscles of the trunk play an important role in maintaining stability by keeping the spine stable during different activities. They also are important in breathing dynamics. Exercise can affect the thickness and activity of these muscles, which are slower to activate and often atrophy when pain occurs. Purpose: We wanted to determine the effects of the DNS on deep core muscles activity and hypertrophy based on a review of the literature. Methods: The literature search was completed in the PubMed database. Articles published between 2012 and 2023 were selected in which the authors investigated the effects of the DNS on the activity and hypertrophy of the deep trunk stabilisers. The quality of the studies was assessed using the PEDro scale. The studies were analysed regarding the effect of DNS on changes in activity and thickness of the transversus abdominis muscle in healthy subjects and individuals with various abnormalities, and the differences between the effects of DNS and other conventional methods of stabilization. Results: Six studies were included in the literature review, involving 178 subjects. The studies measured the thickness, activity and activation time of the transversus abdominis muscle, trunk stability and/or abdominal wall tension. The most commonly used measurement tools were surface electromyography and diagnostic ultrasound. In all selected studies, there were statistically significant differences (p < 0.05) between baseline and end-point measures of transversus abdominis muscle thickness and activity, trunk stability, postural adjustment time and abdominal wall tension. There were also some statistically significant differences between the method studied and other forms of exercise (p < 0.05). Discussion and conclusion: The authors of the reviewed studies conclude that DNS is effective in activating the deep muscles of the trunk and affecting their hypertrophy and plays an important role in establishing stability in people after stroke, individuals with multiple sclerosis and cerebral palsy.
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