Science and Research Centre Koper - all departments (ZRSKP)
13.
Sex-based comparison of trunk flexors and extensors functional and contractile characteristics in young gymnasts
Deodato, Manuela ...
Purpose Gymnastics is a sport characterized by acrobatic and postural strength exercises that require great trunk muscles activation and control. Males and females can be characterized by diferent ...morphological and neuromuscular characteristics of such muscles, and this might be of importance for training and injury prevention. The aim of this study was to measure diferent aspects of trunk fexors and extensors characteristics in a sample of young female and male gymnasts. Methods Twenty-eight sub-elite adolescent female (n=14, 16 y, 14–17) and male (n=14, 17 y, 14–18) gymnasts participated in this cross-sectional study. Tensiomyography was used to assess muscle contractile properties of the rectus abdominis (m.RA) and erector spinae (m.ES), while muscle thickness was assessed for abdominal muscles and lumbar multifdus (m.LM) with ultrasound. Flexors, extensors, and lateral endurance tests were performed. Results Females presented smaller m.ES radial displacement (p<0.001, pη2=0.535), smaller internal oblique thickness (p<0.001, pη2=0.543), and shorter lateral endurance (p=0.002, pη2=0.302). A signifcant side × sex interaction was found for the external oblique thickness (p=0.004, pη2=0.276). Conclusion Present fndings report sex-based diferences in abdominal and lumbar muscles characteristics and support the development of diferent sex-based training and rehabilitation protocols in adolescent gymnasts.
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