Zusammenfassung.
Das Ziel der Studie ist die Bestimmung des Energieverbrauchs bei 36 älteren, im eigenen Haushalt lebenden Personen. Der Gesamtenergieverbrauch (GEV) und der Grundumsatz (GU) werden mit Hilfe der Doppel-Isotopen-Methode und der indirekten Kalorimetrie gemessen. Während des 15-tägigen Beobachtungszeitraumes wird das Essverhalten mittels Ernährungstagebuch, das Aktivitätsverhalten und die Körperzusammensetzung bestimmt. Es besteht kein Unterschied im GEV zwischen Männern und Frauen (2941±439 vs. 2965±543 kcal/d; p=ns). Der GU ist signifikant geringer bei Frauen im Vergleich zu Männern (1345±194 vs. 1543±303 kcal/d; p=0,016). Die Ergebnisse werden mit den Angaben aus den Ernährungstagebüchern verglichen. Frauen wie Männer unterschätzen ihre tägliche Nahrungsaufnahme in den Ernährungstagebüchern signifikant. Die hohe Variabilität des Gesamtenergieverbrauchs älterer Personen ist vom Körpergewicht und körperlichem Aktivitätsverhalten abhängig.
Summary.
The purpose of this study was to investigate energy requirements in healthy elderly subjects. Total daily energy expenditure (TEE) and resting metabolic rate (RMR) were measured by the doubly labeled water technique and indirect calorimetry in 36 healthy free living elderly men and women. Over a 15 day period additional measurements were made of dietary intake, physical activity and body composition. TEE did not differ between women and men (2941±439 vs 2965±543 kcal/d; p=ns), ranging from 2124 to 3968 kcal/d. Resting metabolic rate was significantly lower in women compared to men (1345±194 vs 1543±303 kcal/d; p=0.016). The TEE data were compared to the food diaries. Women and men underestimated their food intake significantly. TEE varies greatly within elderly subjects due to the variation in body weight and physical activity.
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Platte, P., Hellhammer, J., Zimmer, J. et al. Grundumsatz und Energieverbrauch im höheren Lebensalter. Z Gerontol Geriat 37, 387–392 (2004). https://doi.org/10.1007/s00391-004-0195-4
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DOI: https://doi.org/10.1007/s00391-004-0195-4