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Relationship between Abdominal Strength Measured by a Newly Developed Device and Abdominal Muscle Thickness

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DOI: 10.4236/ape.2014.42010    4,112 Downloads   5,503 Views   Citations

ABSTRACT

Although measurement of abdominal strength is important for evaluating trunk myofunction, adequate devices for these measurements have not been developed. As a consequence, the relationships between abdominal strength and abdominal muscle thickness have also not been determined. This study aimed to develop a new device for measuring abdominal strength and to examine the relationship between abdominal muscle strength and thickness. The subjects in the study included 50 young males (age, 19.1 ± 0.32 years; height, 171.0 ± 6.55 cm; weight, 69.5 ± 12.15 kg). The measurement of abdominal flexion strength had high reliability with an intra-class correlation coefficient (ICC) >0.9. The thickness of the rectus abdominis muscle was measured under two conditions using an ultrasound imaging method; relaxation and strength exertion. Abdominal muscle thickness was significantly thicker during exertion than during relaxation. Abdominal flexion strength showed a significant correlation with muscle thickness during both relaxation (r = 0.69) and strength exertion (r = 0.71). No significant difference was found between these correlation coefficients. In conclusion, the values of abdominal strength determined by our newly-developed measuring device had high reliability, with abdominal flexion strength showing a relatively close relationship with the thickness of the rectus abdominis during strength exertion and relaxation.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Noguchi, T. and Demura, S. (2014) Relationship between Abdominal Strength Measured by a Newly Developed Device and Abdominal Muscle Thickness. Advances in Physical Education, 4, 70-76. doi: 10.4236/ape.2014.42010.

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