BIOELECTRIC PHASE ANGLE AS A MARKER OF SARCOPENIA IN CHILDREN AND ADOLESCENTS
DOI:
https://doi.org/10.11603/1811-2471.2024.v.i1.14505Keywords:
phase angle, sarcopenia, bioimpedance analysis, children, skeletal muscles, muscle massAbstract
SUMMARY. The article examines the use of the bioelectric phase angle (PA) as a non-invasive method of assessing the state of the muscular system in children and adolescents. Bioelectric phase angle, which is interpreted as an indicator of the functional state of cell membranes. Unlike indicators of the component composition of the body, which are obtained using prognostic mathematical models that take into account the weight, height, gender and age of the patient, PA is a direct physical parameter that depends only on the electrical properties of tissues.
The aim – to study of the relationship between the values of the bioelectric phase angle and the presence of sarcopenia in children aged 9 to 14 years.
Material and Methods. The study was conducted on the basis of a children's sanatorium with the participation of 94 children who underwent bioelectrical analysis and hand dynamometric test. Indicators of the component composition of the body were obtained by the impedance method using the bioelectrical impedance analyzer "TANITA MC-780 MA" (Japan). A bioelectrical impedance analyzer was used to determine PA, and skeletal muscle strength was measured using a standardized hand isometric test using a Handexer Grip Strength Tester digital hand dynamometer (USA).
Results. The study showed gender differences in PA values and its influence on the presence of sarcopenia. Boys had higher PA values than girls, and they also had higher muscle mass. Children with signs of sarcopenia demonstrated statistically significantly lower PA values compared to those without signs of this condition.
Conclusions. The use of PA can be an effective method for assessing the state of the muscular system in children and adolescents. Low PA values may indicate the presence of sarcopenia, which is important for diagnosis and monitoring of physical development in the target group. Further studies should establish PA cut-off values for accurate diagnosis of sarcopenia and development of optimal treatment strategies.
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