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Open AccessArticle

Anthropometrical and Bioelectrical Impedance Analysis Parameters in Anorexia Nervosa Patients’ Nutritional Status Assessment

1
Department of Human Physiology, Medical University of Lublin, 20-080 Lublin, Poland
2
I Department of Psychiatry, Psychotherapy and Early Intervention, Medical University of Lublin, 20-439 Lublin, Poland
*
Authors to whom correspondence should be addressed.
Medicina 2019, 55(10), 671; https://doi.org/10.3390/medicina55100671
Received: 24 August 2019 / Revised: 26 September 2019 / Accepted: 2 October 2019 / Published: 3 October 2019
Background and Objectives: Body mass index (BMI) is still the only recommended measurable nutritional status assessment parameter in anorexia nervosa (AN). The aim of this study was to measure other anthropometrical and bioelectrical impedance analysis (BIA) parameters in AN patients and to evaluate their nutritional status assessment value. Materials and Methods: The 46 AN female patients were examined at the beginning of hospitalization and followed-up in three measurements (in 6 ± 2 weeks’ intervals). Anthropometrical assessment was based on BMI, circumferences of arm, calf, thigh, hips, waist, their ratio (waist-to-hip ratio (WHR)), and a skinfold test over biceps and triceps muscle, under the scapula, over the hip, and 2 cm from the umbilicus. The BIA parameters included phase angle (PA), membrane capacitance (Cm), and impedance at 200 kHz, and a 5 kHz ratio (Z200/5). Results: In the 1st measurement, BMI correlated with all anthropometric and BIA parameters (p < 0.05). For BIA parameters, the correlation included arm circumference and WHR (p < 0.05). In the follow-up, significant changes were observed in BMI and all BIA parameters. The correlation between BMI and all BIA parameters was present in the 2nd and 3rd measurements (p < 0.05). In the 4th measurement, BMI correlated only with Cm (p = 0.0114). Comparison of BIA parameters according to the state of starvation (BMI < 16.0 kg/m2) revealed that all studied BIA parameters were characterized by statistically significant sensitivity and specificity in the detection of this condition (p < 0.05), except PA in the 4th measurement (p = 0.2099). Conclusions: Selected BIA and anthropometrical parameters could be used for AN patients’ assessment. The study confirmed dynamic changes of BIA parameters during the follow-up. They could be useful in the detection of the state of starvation. View Full-Text
Keywords: phase angle; starvation; undernutrition; body mass index; bioelectrical impedance analysis phase angle; starvation; undernutrition; body mass index; bioelectrical impedance analysis
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Popiołek, J.; Teter, M.; Kozak, G.; Powrózek, T.; Mlak, R.; Karakuła-Juchnowicz, H.; Małecka-Massalska, T. Anthropometrical and Bioelectrical Impedance Analysis Parameters in Anorexia Nervosa Patients’ Nutritional Status Assessment. Medicina 2019, 55, 671.

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