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15-17 YAŞ ERGEN ERKEKLERDE BİYOELEKTRİK İMPEDANS YÖNTEMİNDE ÖLÇÜM ARALIĞININ BELİRLENMESİ

DETERMINING THE MEASUREMENT TIME INTERVAL IN BIOELECTRIC IMPEDANCE METHOD IN 15-17 YEARS OLD MALES

Journal Name:

  • Hacettepe Üniversitesi Spor Bilimleri Dergisi

Publication Year:

  • 2006

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
The purpose of this study was to determine the changes in resistance and reactance values in lying position over 10 minutes. Thirty male (11 volleyball, 8 endurance runners, 1 basketball players, 5 football players, 5 sedentaries) between the ages of 15-17 years old parti popülasyoncipated in this study as volunteers. Body weight (BW), height and Bioelectric Impedance (BIA) measurements were performed at least 4 hours after breakfast between 11.00 and 13.00 hrs. Each subject’s resistance and reactance values were recorded 11 times, at the beginning of the lying position (0th min) and each minute over 10 minutes. According to the results of Repeated Measure ANOVA there was significant time effect in reactance values (F(29,290)=2.212; p=0.017) measured over 10 minutes, however, no time effect was found in resistance values (F(29,290)=1.054; p=0.39). Bonferroni multiple post-hoc tests were performed to determine which minute(s) created the difference in reactance values. However, Bonferroni test results showed no significant change in reactance values over 10 minutes. In conclusion, resistance and reactance values of BIA measurements were not affected by postural changes over 10 minutes in lying position indicating no considerable change in conductance characteristics of biological tissues over that time. Therefore, BIA measurements in population studies can be performed with confidence within the first 10 minutes after lying down.
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Abstract (Original Language): 
Bu çalışmanın amacı, yatar pozisyonda tetrapolar biyoelektrik impedans analizinde (BİA) 10 dakikalık ölçüm zamanının rezistans ve reaktans değerlerinde meydana getirdiği değişimleri incelemektir. Çalışmaya, 15-17 yaşında 30 erkek ergen (11 voleybol, 8 uzun mesafe koşucusu, 1 basketbol, 5 futbolcu ve 5 sedanter) gönüllü olarak katılmıştır. Deneklerin vücut ağırlığı (VA), boy ve BİA ölçümleri kahvaltıdan en az 4 saat sonra ve 11.0–13.00 saatleri arasında yapılmıştır. Deneklerin yatar pozisyona geçtikleri 0. dk ve 10. dk’lık zaman aralığında her dakika başında rezistans ve reaktans değerleri kaydedilmiştir. Sıfırıncı dakikadan 10. dakikaya kadar yapılan rezistans değerlerinde ölçümler arasında istatistiksel olarak anlamlı fark (F(29,290)=1.054; p=0.39) belirlenmiştir. Aynı zaman dilimlerinde ölçülen reaktans değerleri, rezistansın aksine zamana bağlı olarak ölçümler arasında istatistiksel olarak anlamlı fark (F(29,290)=2.212; p=0.017) bulunmuştur. Bununla beraber, farkın hangi dakikalarda ortaya çıktığını belirlemek için yapılan Bonferroni çoklu karşılaştırma testinde bu fark ortadan kalkmıştır. Bu sonuç, reaktans değerlerinde de 10 dk içerisinde yapılan tekrarlı ölçümlerde anlamlı bir fark olmadığını göstermektedir. Sonuç olarak, yatar pozisyonda 0. dakikadan 10. dakikaya kadar biyolojik dokuların direnç özelliklerinde önemli bir değişim gözlenmemiştir. Bu çalışmanın bulguları, popülasyonlar üzerinde yapılan BİA çalışmaları esnasında deneklerin yatar pozisyonda 10 dk ve daha kısa süre içerisinde ölçülmesinin postüral değişimden kaynaklanan rezistans veya reaktans değişkenliği üzerinde önemsiz olduğunu göstermektedir.
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28-47
  • Turkish

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