Validity and reliability of the myTemp ingestible temperature capsule
Deutscher übersetzter Titel: | Validität und Zuverlässigkeit der einnehmbaren Temperaturkapsel myTemp |
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Autor: | Bongers, Coen C.W.G.; Hopman, Maria T.E.; Eijsvogels, Thijs M.H. |
Erschienen in: | Journal of science and medicine in sport |
Veröffentlicht: | 21 (2018), 3, S. 322-326, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Elektronische Ressource (online) Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 1440-2440, 1878-1861 |
DOI: | 10.1016/j.jsams.2017.06.006 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201803002344 |
Quelle: | BISp |
Abstract des Autors
Objectives: An accurate and non-invasive measurement of core body temperature (Tc) is of great importance to quantify exercise-induced increases in Tc in athletes or to assess changes in Tc in patient populations. The use of ingestible gastrointestinal telemetric temperature capsules is widely accepted as a surrogate marker for Tc, but widespread implementation is lacking due to the high costs of these disposable capsules. A new and cheaper temperature capsule system (i.e. myTemp) was recently introduced. The aim of present study is to determine the validity and test–retest reliability of the myTemp system.
Design: Ex-vivo experimental study.
Methods: Fifteen ingestible temperature capsules (myTemp, Nijmegen, Netherlands) were tested in a highly temperature controlled water bath, in which the water temperature gradually increased from 34 °C to 44 °C. The study protocol was performed twice for each temperature capsule.
Results: Mean difference between myTemp temperature and water bath temperature was −0.001 ± 0.005 °C (Limit of Agreement (LOA): ±0.011 °C) during Trial 1 (p = 0.11) and −0.001 ± 0.006 °C (LOA: ±0.012 °C) during Trial 2 (p = 0.039). Furthermore, an Intraclass Correlation Coefficient (ICC) of 1.00 was found for both trials. A systematic difference between Trials 1 and 2 of 0.004 ± 0.008 °C (LOA: ±0.015 °C) was found (p < 0.001), whereas the ICC between both trials was 1.00 and the standard error of measurement was 0.005 °C.
Conclusions: Although we found a systematic bias for the sensitivity (−0.001 °C) and reliability (0.004 °C), these values can be considered insignificant from a physiological and clinical perspective. Thus, the myTemp ingestible temperature capsule is a valid technique to measure (water) temperature under controlled circumstances.