Abstract details

Abstract-ID: 1943
Title of the paper: Assessing Lower Limb Muscle Response to Dynamic Neuromuscular Stability (DNS): A Pilot Investigation with Ultrasound Shear Wave Elastography
Authors: Kuan-Lin Chen, Lin, T., Taun, C., Chang, K., Li, H., Hung, W.
Institution: National Taiwan University of Sport
Department: Department of Exercise Health Science
Country: Taiwan
Abstract text INTRODUCTION:
The Dynamic Neuromuscular Stabilization (DNS) approach provides practical techniques for assessing and activating intrinsic spinal stabilizers, aiming to enhance the movement system for both pre-habilitation and rehabilitation in athletic injuries, thus optimizing performance [1]. Shear-wave elastography (SWE), an emerging ultrasound technique, enables the quantification of mechanical and elastic properties specifically within muscle tissue [2]. We hypothesize that after DNS training, there will be changes in lower limb muscle stiffness, detectable through SWE.
METHODS:
Twelve healthy volunteers, including 2 males and 10 females, underwent DNS training. We conducted SWE measurements of bilateral lower limb muscles (vastus medialis obliquus [VMO], vastus lateralis obliquus [VLO], biceps femoris [BF], and semimembranosus [SM]) before and after the training. Differences in shear wave speed between pre-training (PRE) and post-training (POST) for each muscle were assessed using the paired t-test. Additionally, Pearson correlation analysis was performed to examine the correlation of shear wave speed changes between muscles. A P-value <0.05 was considered statistically significant.
RESULTS:
At baseline, shear wave speeds were 2.03± 0.53 m/s in VMO, 1.91± 0.17 m/s in VLO, 2.92± 1.00 m/s in BF, and 3.82± 1.54 m/s in SM. Following Dynamic Neuromuscular Stabilization (DNS) training, no significant differences in shear wave speeds were observed in VMO, VLO, or SM. However, shear wave speed significantly increased in right biceps femoris (BF) after training (p=0.028). Additionally, a high correlation(0.821) of shear wave speed change between right VMO and right BF was noted (P=0.001).
CONCLUSION:
Our pilot investigation utilizing ultrasound shear wave elastography to assess lower limb muscle response to Dynamic Neuromuscular Stabilization (DNS) training revealed significant increases in shear wave speed in the biceps femoris (BF), indicating elevated muscle stiffness. These findings highlight the specificity of muscle adaptations to DNS training and emphasize the importance of individualized assessment and targeted interventions in optimizing lower limb muscle function. Further research with larger sample sizes and longitudinal follow-up is warranted to confirm these preliminary findings and elucidate the underlying mechanisms of muscle response to DNS training.

References:
1. Frank C, Kobesova A, Kolar P. Dynamic neuromuscular stabilization & sports rehabilitation. Int J Sports Phys Ther. 2013 Feb;8(1):62-73.
2. Taljanovic, M. S., Gimber, L. H., Becker, G. W., Latt, L. D., Klauser, A. S., Melville, D. M., Gao, L., & Witte, R. S. (2017). Shear-Wave Elastography: Basic Physics and Musculoskeletal Applications. Radiographics : a review publication of the Radiological Society of North America, Inc, 37(3), 855–870.
Topic: Sports Medicine and Orthopedics
Keyword I:
Keyword II:
Keyword III: