Journal of bodywork and movement therapies · 2025
Functional and structural effects of local vs. global motor control training: An ultrasound-based study on deep abdominal muscles.
СтатьяРандомизированное исследованиеПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Szuścik-Niewiadomy Katarzyna, Niewiadomy Paweł, Stana Oskar, Nowak Michał
Аннотация
BACKGROUND: Trunk stabilization is essential in rehabilitation and sports training, relying on anticipatory activation of deep trunk muscles like the transverse abdominis.
OBJECTIVES: This study assessed the effects of 4-week motor control training programs (global and local) on lateral abdominal wall muscle thickness and functional parameters.
METHODS: Fifty-eight participants were enrolled, and forty-eight (35 women, 13 men) completed the study. Inclusion criteria were: age 18-40 years, BMI ≤29.9, and no contraindications to training. Participants were randomly assigned to global training (GT), local training (LT), or control (CG). The intervention lasted four weeks, with GT using a Pressure Biofeedback Stabilizer and LT using sonofeedback. Muscle thickness was assessed by ultrasound, trunk mobility with Fingertip-to-Floor and Sit-and-Reach tests, and jump performance via CMJ. Statistical analyses used Wilcoxon and Kruskal-Wallis tests.
RESULTS: Global training (GT) significantly increased lateral abdominal muscle thickness (TrA: +0.7 cm, IO: +0.1 cm, EO: +0.06 cm; p < 0.01) and showed greater improvements in combined abdominal muscle thickness than both LT and CG. Local training (LT) demonstrated a near-significant increase in transverse abdominis thickness (+0.3 cm; p = 0.07). No significant changes were observed in trunk mobility or jump performance (p > 0.05). Ultrasound transducer positioning (parallel vs. perpendicular) affected measurement reliability for oblique muscles.
CONCLUSIONS: Global training led to hypertrophic changes in lateral abdominal muscles. Local training showed a trend toward increased transverse abdominis thick-ness but without statistical significance. Ultrasound measurements may be less reliable when the transducer is positioned parallel to the body midline.
OBJECTIVES: This study assessed the effects of 4-week motor control training programs (global and local) on lateral abdominal wall muscle thickness and functional parameters.
METHODS: Fifty-eight participants were enrolled, and forty-eight (35 women, 13 men) completed the study. Inclusion criteria were: age 18-40 years, BMI ≤29.9, and no contraindications to training. Participants were randomly assigned to global training (GT), local training (LT), or control (CG). The intervention lasted four weeks, with GT using a Pressure Biofeedback Stabilizer and LT using sonofeedback. Muscle thickness was assessed by ultrasound, trunk mobility with Fingertip-to-Floor and Sit-and-Reach tests, and jump performance via CMJ. Statistical analyses used Wilcoxon and Kruskal-Wallis tests.
RESULTS: Global training (GT) significantly increased lateral abdominal muscle thickness (TrA: +0.7 cm, IO: +0.1 cm, EO: +0.06 cm; p < 0.01) and showed greater improvements in combined abdominal muscle thickness than both LT and CG. Local training (LT) demonstrated a near-significant increase in transverse abdominis thickness (+0.3 cm; p = 0.07). No significant changes were observed in trunk mobility or jump performance (p > 0.05). Ultrasound transducer positioning (parallel vs. perpendicular) affected measurement reliability for oblique muscles.
CONCLUSIONS: Global training led to hypertrophic changes in lateral abdominal muscles. Local training showed a trend toward increased transverse abdominis thick-ness but without statistical significance. Ultrasound measurements may be less reliable when the transducer is positioned parallel to the body midline.