Quantitative Evaluation of Skeletal Muscle Fat Content by Measuring Echo Intensity Using Ultrasonography in Preschool Children

Oya, Chika; Muramatsu, Erina; Teramoto, Keisuke

doi:10.30476/intjsh.2023.98323.1298

Document Type : Research Article (s)

Authors

¹ Humanitec Junior College, Japan

² Aichi University of Education, Japan

https://doi.org/10.30476/intjsh.2023.98323.1298

Abstract

Background: Quantitative analysis of echo intensity (EI) is a reliable method for discriminating between normal and neuromuscular disease-affected muscles in children. However, the effects of increased skeletal muscle fat mass and total body fat mass in healthy preschool children are yet to be determined. The purpose of this study was to compare the EI of skeletal muscles and local fat accumulation in healthy preschool children by gender and body shape using ultrasonography.
Methods: Three- to six-year-old children (149 boys and 124 girls) without any known neuromuscular disorder were included in this cross-sectional research, during the period of 2015 to 2018 in Miyazaki prefecture, Japan. Anthropometry, body composition, and EI of the biceps brachii muscle (BB) and quadriceps femoris (RF) muscle were measured by ultrasonography. Differences in anthropometric measurements and body composition divided by two types of criteria using age and sex-specific percentiles were analyzed using two-way ANOVA (P<0.05).
Results: EI at the BB of overweight children (above 90th percentile) was 9.82±3.76 for boys and 10.87±3.69 for girls. EI at the BB of normal children (10th-90th percentile) was 6.02±2.62 for boys and 6.53±2.92 for girls. EI at the BB of thin children (below 10th percentile) was 5.61±2.17 for boys and 6.52±3.49 for girls. EI at the BB of overweight children is higher than normal and thin children (P<0.001). EI at the RF of overweight children (above 90th percentile) was 16.97±5.12 for boys and 18.84±3.41 for girls. EI at the RF of normal children (10th-90th percentile) was 15.32±4.55 for boys and 16.20±3.98 for girls. EI at the RF of thin children (below 10th percentile) was 14.94±3.90 for boys and 14.58±4.94 for girls. EI at the RF of overweight children is higher than normal and thin children (P=0.024). These results were also similar for the groups created using the 25th and 75th percentiles, with the above 75th percentile group showing clearly higher values of EI.
Conclusions: Our results suggested that the accumulation of adipose tissue within skeletal muscle varies with the degree of obesity. It seems reasonable to conclude that an extreme increase in body fat might be linked to higher visceral and skeletal muscle fat (ectopic fat content).

Highlights

How to Cite: Oya C, Muramatsu E, Teramoto K. Quantitative Evaluation of Skeletal Muscle Fat Content by Measuring Echo Intensity Using Ultrasonography in Preschool Children. Int. J. School. Health. 2023;10(3):109-118. doi: 10.30476/INTJSH.2023.98323.1298.

Keywords

References

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International Journal of School Health

Quantitative Evaluation of Skeletal Muscle Fat Content by Measuring Echo Intensity Using Ultrasonography in Preschool Children

References

References

Volume 10, Issue 3 - Serial Number 39
July 2023
Pages 109-118

Quantitative Evaluation of Skeletal Muscle Fat Content by Measuring Echo Intensity Using Ultrasonography in Preschool Children

References

References

Volume 10, Issue 3 - Serial Number 39July 2023Pages 109-118

Volume 10, Issue 3 - Serial Number 39
July 2023
Pages 109-118